40. special meeting on pending protection … projects of ntpc, nlc, npcil, joint venture & umpp...

Minutes of the 30th SRPC Meeting held on 27th August 2016

CONTENTS 1. INTRODUCTION............................................................................................................................................... 4

2. CONFIRMATION OF THE MINUTES OF 29th MEETING OF SRPC ...................................................................... 6

3. MEMBERSHIP TO RPC ..................................................................................................................................... 6

4. FLEXIBILITY IN UTILIZATION OF DOMESTIC COAL FOR REDUCING COST OF POWER GENERATION .............. 8

5. TERMS OF REFERENCE FOR RENEWABLE INTEGRATION – TASK FORCE ...................................................... 10

6. DETERMINATION OF TRANFER PRICE OF LIGNITE IN RESPECT OF NLC MINES FOR THE PERIOD 2014-19 –

REQUEST FOR MODIFICATIONS IN THE NOTIFICATION OF MOC ................................................................. 11

7. PREPARATION FOR MEETING REVISED ENVIRONMENT NORMS AS PER ENVIRONMENT (PROTECTION)

AMEN DMENT RULES, 2015 .......................................................................................................................... 12

8. ROADMAP TO OPERATIONALISE RESERVES IN THE COUNTRY ..................................................................... 14

9. COMPLIANCE OF ORDER OF HON’BLE CERC IN PETITION NO. 420/MP/2014 – IN RESPECT OF LVRT AND

OTHER PROVISIONS OF CEA/CERC REGULATIONS ....................................................................................... 15

10. LOW VOLTAGES ............................................................................................................................................ 18

11. PATROLLING / MAINTENANCE OF CRITICAL LINES AND SUBSTATIONS ....................................................... 21

12. CONTINGENCY OF 400 kV NELLORE - NELLORE PS LINES ............................................................................. 22

13. STATUS OF GENERATION IN GENERATING STATIONS .................................................................................. 23

14. REVIEW OF ULDC / SCADA/COMMUNICATION ............................................................................................ 24

15. TTC/ATC ........................................................................................................................................................ 28

16. UPCOMING TRANSMISSION SYSTEM ........................................................................................................... 29

17. UPCOMING RENEWABLE PROJECTS AND THEIR INTEGRATION WITH TRANSMISSION NETWORK ............. 44

18. NEW PROJECTS OF NTPC, NLC, NPCIL, JOINT VENTURE & UMPP ................................................................ 46

19. NEW PROJECTS OF STATE SECTOR & IPP ...................................................................................................... 48

20. EMERGENCY RESTORATION SYSTEM (ERS) .................................................................................................. 49

21. PROGRESS OF BUS/LINE REACTORS TO BE COMMISSIONED IN SR .............................................................. 51

22. OUTSTANDING DUES BETWEEN SOUTHERN AND WESTERN REGIONS ....................................................... 56

23. NON-AVAILING OF OCC APPROVED SHUTDOWN ......................................................................................... 57

24. SPARE ICT AND REACTOR PLACEMENT AND USAGE PROCEDURE ............................................................... 58

25. IEGC RELATED ISSUES REQUIRING ATTENTION/ACTION .............................................................................. 59

26. AUGMENTATION OF TALCHER-II TRANSMISSION SYSTEM .......................................................................... 73

27. INCLUSION OF DRAWAL OF MAHE IN REA ................................................................................................... 73

28. SHARING OF TRANSMISSION CHARGES OF TRANSMISSION ASSETS OF NATIONAL IMPORTANCE ............. 74

29. APPROACH BEING TAKEN BY CTU FOR RESERVING THE TRANSMISSION CAPACITY FOR THE CUSTOMERS

WHO HAVE AVAILED LTA WITHOUT IDENTIFYING BENEFICIARIES .............................................................. 75


30. STATUS OF PHASE I AND PHASE II OF PROTECTION AUDIT RECOMMENDATIONS ...................................... 75

31. GRID OPERATION .......................................................................................................................................... 79

32. THOROUGH REVIEW OF ALL THE DRAWAL POINTS OF STATES FOR DRAWAL COMPUTATIONS ................. 86

33. TPCIL REQUEST TO EXEMPT DEVIATION CHARGES ...................................................................................... 87

34. SCHEDULING OF NTPC RAMAGUNDAM SOLAR POWER PLANT (10 MW) .................................................... 87

35. GRID STUDY COMMITTEE (TASK- 2) AUDIT PROGRESS DETAILS .................................................................. 87

36. IMPLEMENTATION OF PROTECTION SUITE / PROTECTION MANAGEMENT SYSTEM (PMS) FOR SOUTHERN

REGION ......................................................................................................................................................... 89

37. OVER VOLTAGE RELAY (OVR) GRADINGS FOR 400 KV TRANSMISSION LINES OF THE SOUTHERN REGION 89

38. PROTECTION SYSTEM ANALYSIS GROUP (PSAG-15) MEETING HELD AT NTPL, TUTICORIN ......................... 89

39. SPECIAL MEETING ON ISSUES RELATING TO RECENT GRID DISTURBANCES IN GAJUWAKA – SIMHADRI -

KALPAKA CORRIDOR HELD ON 04TH MAY, 2016 AT SRPC, BENGALURU ....................................................... 91

40. SPECIAL MEETING ON PENDING PROTECTION ISSUES OF M/S KPCL HELD ON 03.06.2016 AT SRPC,

BENGALURU .................................................................................................................................................. 92

41. REVIEW OF ISLANDING SCHEMES OF SOUTHERN REGION .......................................................................... 92

42. PROTECTION SYSTEM ANALYSIS GROUP (PSAG-16) MEETING HELD AT AMBEWADI SS HELD ON

18.07.2016 .................................................................................................................................................... 94

43. PENDING IMPLEMENTATION OF RECOMMENDATIONS OF PROTECTION COORDINATION SUB-COMMITTEE

(PCSC) OF SRPC ............................................................................................................................................. 95

44. STUDY PROGRAMME ON THE INTEGRATION OF RENEWABLE ENERGY RESOURCES INTO THE GRID ......... 95

45. IEGC, FOURTH AMENDMENT REGULATIONS 2016- TECHNICAL MINIMUM OF GENERATORS /

COMPENSATION PROCEDURE FOR SHR & AEC ............................................................................................ 95

46. SCHEDULING/OPERATIONAL ISSUES IN RESPECT OF NP KUNTA UMSPPS – 1 ............................................. 95

47. COMMERCIAL COMMITTEE ISSUES .............................................................................................................. 95

48. REVIVAL OF UNITS AT SHARAVATHI GENERATING STATION ........................................................................ 97

49. REFERENCE FROM MNRE REGARDING COMPILATION OF DATA FOR MEETING RENEWABLE ENERGY

TARGETS OF 175 GW BY 2020 ...................................................................................................................... 98

50. PROVIDING INFORMATION REGARDING COMMISSIONING AND DECLARATION OF COD OF POWER

GENERATING UNITS ...................................................................................................................................... 98

51. FORECASTING, SCHEDULING AND DEVIATION SETTLEMENT OF WIND AND SOLAR GENERATING

STATIONS AT THE STATE LEVEL .................................................................................................................... 98

52. SKILL PLAN FOR POWER SECTOR BASED ON THE ASSESSED SKILL GAP IN THE SECTOR .............................. 99

53. ISSUES IN OPGW STRINGING UNDER FIBRE EXPANSION PROJECT OF SR (REFER ITEM 25.16) .................... 99

54. REPLACEMENT OF WRAP FIBRE CABLE WITH OPGW IN GOOTY-BANGALORE & UDUMALPET-TRICHUR

LINKS ........................................................................................................................................................... 100

55. SUBSTATION ICT- 3 BAY EXTENSION WORKS AT OUR 400 KV MADURAI AND TRICHY STATIONS ............. 101


56. CALIBRATION TESTING OF SEMS IN SOUTHERN REGION CALIBRATION TESTING OF SEMS IN SOUTHERN

REGION ....................................................................................................................................................... 101

57. CONCURRENCE FOR EARLY COMMISSIONING OF 765KV WARDHA – NIZAMABAD D/C, 400KV

NIZAMABAD – DICHPALLI D/C (HTLS) AND 765/400KV NIZAMABAD GIS .................................................. 102

58. SRPC CERTIFICATION TO CLAIM ADDITIONAL ROE FOR LILO OF 400 KV KADAPA-KOLAR S/C LINE AT NP

KUNTA AND ESTABLISHMENT OF 400/220 KV SUB-STATION AT NP KUNTA ............................................. 102

59. NTPC KUDGI 400/220 KV LOSSES ............................................................................................................... 103

60. NTPC SIMHADRI-II SCHEDULING ISSUES ..................................................................................................... 103

61 20-YEAR (2016-36) PERSPECTIVE TRANSMISSION PLAN REPORT .............................................................. 106

62 REIMBURSEMENT OF SRPC EXPENDITURE ................................................................................................. 107

63 VOTE OF THANKS ........................................................................................................................................ 107

64 DATE & VENUE OF THE NEXT SRPC MEETING ............................................................................................ 107

Minutes of the 30th SRPC Meeting held on 27th August 2016 Page 4 of 107

SOUTHERN REGIONAL POWER COMMITTEE

BENGALURU

MINUTES OF THE 30th

MEETING OF SRPC HELD ON 27th

AUGUST 2016 AT CHENNAI

1. INTRODUCTION

1.1 The 30th

Meeting of Southern Regional Power Committee (SRPC) was held on 27th

August 2016 at Chennai. The list of the participants is given at Annexure-I.

1.2 On behalf of Chairman, NTECL as well as the NTECL team, NTECL extended a

hearty welcome to Chairperson , SRPC, Dr M Saikumar, CMD, TANGEDCO and all

other esteemed Members of SPRC to the proceedings. NTECL also cited the following

‘Coming together is the beginning. Keeping together is progress. Working together is

success..’ – Henry Ford.

1.3 Shri Thomas Joseph, CEO, NTECL welcomed Chairperson, SRPC and esteemed

Members of SRPC to the 30th

Meeting of SRPC. NTECL was honored to hold the 30th

SRPC meet in this beautiful heritage city of Mamallapuram. Team NTECL had been

meticulously planning the conduct of this Meeting. It was a matter of pride that

NTECL station was running to its full capacity after overcoming major technical and

logistic issues. Concern of the esteemed beneficiaries regarding delay in stabilization of

the station had been addressed and they were looking forward towards continued

support.

1.4 Shri K Biswal, Chairman, NTECL and Director (F), NTPC welcomed Chairperson, SRPC

& CMD, TANGEDCO, Principal Secretary (Energy), Govt. of Maharashtra, esteemed

members of SRPC and delegates to the meeting being held in the ancient port city of

Pallavas, Mamallapuram (heritage site declared by UNESCO). He thanked Chairperson,

SRPC for having given NTECL the opportunity to host this prestigious SRPC meeting.

SRPC plays a very pivotal role in facilitating stable and efficient grid operation. SRPC is

widely respected for its contribution in evolving a unified grid. Challenges in grid

operation had become increasingly complex on account of increased thrust on renewable.

SR grid had strong presence of wind energy and was going ahead with aggressive capacity

addition in solar power also. NTPC was going to add 2,000 MW of Solar – 1,000 MW on

its own and 1,000 MW under the National Solar Mission in various states like Andhra

Pradesh, Telangana and Karnataka in the near future. With strong presence of Wind and

Solar, Southern Region would be definitely be a trend setter in tackling issues linked to

assimilation of renewable into the grid. He requested the august gathering to fix norms

and establish a canon for balanced integration of renewable with conventional energy


resources. Generation level at NTECL had been an area of concern for beneficiaries in the

past 2-3 Meetings of SRPC. NTECL had faced certain stabilization/teething problems like

coal supply, logistics, turbo generator problem for 3rd

unit, desalination plant etc. With

continuous effort, all problems had been overcome and all the three units were running at

full capacity. Adequate coal stock for more than 15 days was available and they had also

started transporting coal from MCL through Dhamra port. NTECL was one of the

cheapest stations with variable cost of less than Rs.2/unit. He requested for continuous

support and patronage which would enable NTECL to support the beneficiaries. He

wished the Meeting best of deliberations.

1.5 Shri S R Bhat, Member Secretary, SRPC welcomed Dr M Saikumar, Chairperson, SRPC

& Chairman, TNEB and Members to the 30th

Meeting of SRPC. He on behalf of SRPC

placed on record, the leadership of Shri M Sivasankar, CMD, KSEBL outgoing

Chairperson during his tenure. He also welcomed Shri T K Barai, Member (GO&D,

Planning and Thermal), CEA to the Meeting.

SRPC welcomed the following Members:

Shri T K Barai, Member (GO &D), CEA Shri M M Nayak, CMD, APEPDCL Shri G Kumar Naik Managing Director, KPCL Shri Paul Antony, CMD, KSEB Ltd Shri N. Venugopal, Director (Distribution & Safety), KSEBL

Dr. S. Sundaravadivelu, Secretary (Power), Govt. of Puducherry Shri G Raghuma Reddy, CMD, TSSPDCL, Hyderabad

Shri A R Neelakanta Pillai CEO, NTPL Shri S M Zafrulla, MD, Coastal Energen Pvt

SRPC also placed on record, the excellent services rendered by following outgoing

Members:

Shri Major Singh, Member (GO &D), CEA Shri R Mutyala Raju CMD, APEPDCL

Shri M.Maheshwar Rao Managing Director, KPCL Ms B.Nina, Director (Distribution & Safety), KSEBL Shri G. Theva Neethi Dhas Secretary (Power), Govt. of Puducherry

Shri P.R.Raghuram, ED, SRLDC, POSOCO Shri S.Sathiyanarayanan, CEO, NTPL, Tuticorin Shri K.Venkatanarayana, CMD, TSNPDCL, Warangal

1.6 Dr M Saikumar, Chairperson, SRPC & Chairman, TNEB welcomed all Members to the

30th

Meeting of SRPC. He thanked the host, NTECL, who had taken meticulous care to

host the Meeting. Southern Region needs to concentrate on issues relating to renewable

and its integration. Tamil Nadu had around 9,000 MW of renewable sources. Andhra

Pradesh, Telangana and Karnataka were very bullish about Solar. Each of the state could

add about 2,000-3,000 MW of Solar power in next couple of years and it would be a real

challenge to integrate. Nuclear stations could not be backed down during any demand

crash. Managing renewable versus conventional energy and grid management was to be

deliberated and South had to show the way in this regard. Compared to North and East


Regions, South was better placed in sufficiency and integration of renewable, though

Western Region was quite advanced. In next couple of years about 20,000 to 25,000 MW

of renewable was to be integrated seamlessly. Contribution of Conventional energy was

also important and around 15,000 MW of conventional energy was in the pipeline in

Tamil Nadu in coming seven years. It was heartening to note that domestic coal usage

production had increased, though a few bottlenecks in transportation and railways still

persisted. While domestic coal was important, getting quality coal was also important.

Bottlenecks needed to be settled by Railways and Ports and till that time dependence on

imported coal might remain.

2. CONFIRMATION OF THE MINUTES OF 29th

MEETING OF SRPC

2.1 Minutes of the 29th

Meeting of SRPC held on 5th

March 2016 in Vishakhapatnam had

been circulated vide letter dated 19th

May 2016.

2.2 Minutes of the Meeting were confirmed.

3. MEMBERSHIP TO RPC

3.1 Special Invitee /Membership status to M/s.PTC in RPCs

3.1.1 In the 5th

NPC Meeting held on 08th

April 2016 (MoM at Annexure-II), the following had

been noted:

Grid Management Division, CEA had informed that M/s.PTC had requested for Special

Invitee / Membership status in all RPCs and had proposed deliberation on this issue in

the NPC meeting.

Chairperson, CEA had opined that it should be as per GoI resolution. For ERPC, due

to international transactions, special provision can be made but the approval of MoP

through CEA can be sought.

After detailed deliberations, it had been agreed that the issue of membership for Traders

would be deliberated in respective RPCs and outcome thereof would be communicated

to CEA for taking up the matter with MoP.

SRPC deliberations

3.1.2 MS, SRPC informed that MoP Resolution stipulated the composition of RPC. CEA had

recently nominated M/s Adani Enterprises Ltd., as Trader Member to SRPC. CEA was

working out Membership of traders to various RPCs on rotation basis.

3.1.3 SRPC concluded that the proposal to include M/s.PTC as SRPC Member could be

deferred. Presently, composition as stipulated in the MoP Resolution could be continued.

3.2 Membership of IPPs in RPCs

3.2.1 The number of IPPs having more than 1000 MW installed capacity was increasing. In the

5th


April 2016 (refer Annexure-II), the following had been

noted:


WRPC had proposed to enhanced the limit of 1,000 MW to 2,000 MW for

membership of IPP in RPCs. NRPC had suggested that instead of allowing them

RPC membership the IPPs might be included in subcommittee like TCC/OCC.

NPC had suggested that the issue be deliberated first in respective RPCs and after

evolving a common view, the same would be referred to MoP for amendment in

Resolution.

SRPC deliberations

3.2.2 MS, SRPC stated that in case eligibility criteria was increased to 2,000 MW then none of

the present IPPs in the region would qualify to be Members of SRPC. There were a

number of issues like RGMO, PSS etc., where their contribution was essential.

3.2.3 MD, CEPL stated that it was very much necessary that IPPs more than 1,000 MW are

members to RPC. 1,000 MW capacity was a significant quantum and moreover

coordination with various power utilities was required. Hence, present provision of

1,000 MW could be continued.

3.2.4 Director & CEO (Trading), JSWEL said that they have been in Southern Region since

quite some time and serving power requirements of deficit states. They would like to

continue to be part of the esteemed SRPC forum and contribute their best to the sector.

SR was different from WR where many stations of more than 2,000 MW had come up.

Eligibility for membership may need to be different for different regions.

3.2.5 Director, CEA informed that the issue of membership of traders & IPPs to RPCs had

been discussed in the NPC. CEA had collected the inputs from RPCs and furnished their

recommendations to MoP. They had recommended that there would be one trader to

each RPC (being nominated by CEA in rotation) as per MoP Resolution. Any trader

engaged in foreign power trade and declared as Nodal Agency would be the member of

that particular RPC. Regarding IPPs, it was noted that most of the issues were technical

in nature like RGMO etc. Hence, IPPs could be invited to TCCs and various other sub

committees as per requirement. For RPC membership, 2,000 MW could be eligibility

criteria. Regarding Transmission Licensee, there were more than 16 licensees and it

may thus not be feasible to make them Members to RPCs. CEA representative

suggested that other Transmission Licensees could be invited to TCC and other

subcommittee meetings as per requirement.

3.2.6 SRPC concluded that the present eligibility of 1,000 MW as stipulated in the MoP

Resolution could be continued for Southern Region.


3.3 Request of Adani Transmission Limited for inclusion as a Member in SRPC

3.3.1 Adani Transmission Limited vide their letter dated 05th

July 2016 (Annexure-III) had

informed that they are one of the largest transmission company operating in the private

sector in India and own, operate and maintain more than 5,000 ckms of Transmission lines

ranging from 400 kV to 765 kV. Additional projects of 2,000 ckms spanning across states

have been awarded to them through TBCB process. Highlighting the need of private

players in transmission planning /TBCB, ATL had requested to be a included as a Member

in SRPC.

SRPC deliberations

3.3.2 After deliberations, SRPC concluded that eligibility of Transmission License to be a

Member could be as per the prevalent MoP Resolution.

3.4 Membership of IL&FS, HNPCL and LKPPL to SRPC

3.4.1 IL&FS, HNPCL and LKPPL (letter dated 24.08.2016 Annexure-IV) are fulfilling the

eligibility for Membership to SRPC.

SRPC deliberations

3.4.2 SRPC agreed for membership of IL&FS, HNPCL and LKPPL to SRPC, in line with the

provisions of MoP Resolution.

4. FLEXIBILITY IN UTILIZATION OF DOMESTIC COAL FOR REDUCING COST

OF POWER GENERATION

4.1 MoP vide letter dated 10.06.2016 (Annexure-V) had informed that on 4th

May 2016

Cabinet had approved proposal of Ministry of Power for flexibility in utilization of domestic

coal for reducing cost of power generation. Presently, share of generation from coal based

power plants was about 78 % of the total generation in the country. These coal based power

plants are supplied coal against the plant specific Fuel Supply Agreement (FSA). There are

some power plants which generate cheaper power than others. There was scope for

utilization of coal in such power plants to achieve overall reduction in cost of generation.

4.2 In this regard, following mechanism for allowing flexibility in utilization of domestic coal

amongst power generating stations to reduce the cost of power generation had been

approved:

All long term coal linkages of individual Thermal Power stations of specific State (State

would include Union Territories) to be assigned to respective State or State notified

agency. Similarly, all long term coal linkages of individual General Generating Stations

shall be assigned to the company owning the Central Generating Stations (CGSs), instead

of individual Thermal Power stations to enable efficient coal utilization amongst end use

power generating stations.


Annual Contracted Quantity (ACQ) of each individual coal linkages (as per respective

Fuel Supply Agreements) to be aggregated as consolidated ACQ for each State or the

company owning the Central generating stations, as the case may be. A supplementary

agreement shall be signed for each State /Company owning the CGS for such

consolidated ACQ and the terms and conditions of supplementary agreement shall be

applicable on the aggregated ACQ of State or Central generating stations.

There shall be flexibility in use of such coal amongst the generating stations of state

owned utilities, plans of other state power utilities, company owning the Central

Generating stations and IPPs, amongst each others as per methodology issued by CEA.

Mechanism shall initially be rolled out for Central Generating Companies and State

Power Utilities. Ministry of Power shall separately notify the methodology for use of

transferred coal in IPPs generating stations.

Methodology for flexibility in utilization of domestic coal for reducing the cost of power

generation prepared in consultation with all the Stakeholders had been issued by CEA

and also available on the CEA website.

TCC deliberations

TANGEDCO had stated as per computations, in Case-1 (use of coal aggregated with the

state in its own State GS), the cost is reducing. Ib valley coal (2,000 kM) linked to Mettur

could be utilized in North Chennai St-II. Presently computations for Case-2 (use of coal

aggregated with one state in GS to other state’s utilities) would be difficult to assess.

Case-3 (use of coal aggregated with state in CGS and vice versa) could also be utilized

by TANGEDCO as in some earlier cases NTECL & NTPL were requiring coal.

APGENCO has pointed out whether GCV, specific oil consumption, transit loss,

transportation cost, grade slippages, heat rate MoEF norms etc are to be factored in the

computations.

TSGENCO had stated that the main issues with coal were logistics. Transferring coal

from station to station within the state, state generators to other state generators/CGS etc

would further make the transportation matrix complex. During rainy season, difficulty of

transportation further aggravated.

CEA had informed that certain apprehensions were envisaged during the formulation of

this methodology. The methodology could be utilized only if there are some financial

benefits. Sample computations were carried out in consultation with NTPC; and the

estimated benefit for NTPC for one year was around Rs 760-900 Crores on internal

optimization only. Sample computations for Koradi (MAHAGENCO) had also shown

substantial saving. The three Ministries i.e Power, Coal and Railways had come together

for implementation of the scheme. Sample computations could be put in public domain

and financial/economic advantages of the methodology established to Authority or

Regulator, before implementation. Earlier objective was to ‘supply power’ which had

been modified to ‘supply cheap power’. Whatever help required from CEA, MoP and

other Ministries would be provided to the agencies willing to come forward. Regarding

third party sampling, it was informed that grade slippages would come down. There


would be no rebooking charges by the Railways during diversion of coal under this

scheme. Issues relating to coal quality could be taken up with Fuel Management Division

of CEA.

TCC had suggested that states/generators could approach CEA/CERC/SERC in line with

the methodology with sample computations to utilize the scheme for reducing cost of

power.

SRPC deliberations

4.3 Director, CEA stated that there had been some apprehensions while formulating the scheme

about its usefulness. However, sample calculation for coal transfer from Koradi

(MAHAGENCO) to NTPC station had shown significant savings of around 39 paise/unit in

variable cost. Ministry of Coal and Ministry of Railways had also extended support and

cooperation to the scheme to minimize the cost. In case coal optimization is carried out

within NTPC stations, there could be substantial savings as per computations. Case 2 & 3

could be utilized which would a learning experience and subsequently Case 4 could be

initiated in a transparent manner.

4.4 ED (C), NTPC clarified that the scheme had been implemented for intra-state GENCO

stations and between NTPC and GENCO stations also. After experience, MoP may open the

scheme for IPPs. The whole essence of the scheme was to minimize the cost of power.

Within NTPC, coal could be transferred within various stations, maximizing generation at

pit head stations while non pit head stations could possibly be run on partial loading, for

maintaining spinning reserve and taken for reserve shut down as per system requirement.

4.5 After deliberations, SRPC suggested that states/generators may approach

CEA/CERC/SERC in line with the methodology with sample computations to utilize the

scheme for reducing cost of power.

5. TERMS OF REFERENCE FOR RENEWABLE INTEGRATION – TASK FORCE

5.1 In the 29th

Meeting of SRPC, several issues had been highlighted in respect of renewable

integration since there was huge paradigm shift due to large volumes of renewable were

planned to be integrated into the grid. Impact of renewable integration on system operation,

balancing, infirm nature etc., was not fully known. Broader issues would be needed to be

studied in greater depth. In Europe, when renewable integration took place, they had tried to

use pan European grid like hydro reserves of Scandinavian countries to balance solar and

wind variability. So there would be a need to look into balancing power from hydro, gas


etc. with Southern Region perspective. Backing down of renewables could not be a good

option. Grid operational, commercial and strategic issues would be required to be

addressed. The manner in which renewables are getting integrated, all States could get

affected.

5.2 It had been agreed that a Task Force at TCC level could flag issues and come out with Term

of Reference and possibly get it examined through a Consultant.

5.3 This issue had been deliberated in the Special Meeting of TCC held on 2nd August 2016.

TCC deliberations

TCC recommended TOR for renewable integration as finalized in the Special TCC

meeting held on 02nd

August 2016 for approval of SRPC.

SRPC deliberations

5.4 Chairperson, SRPC stated that the issue of renewal integration was common to all and could

be taken forward. There needs to be some relaxation in respect of frequency and deviation

for renewable rich states. Even N-1 criteria needs to be relaxed for transfer of renewable

power. These are principles which need to be deliberated at the National level.

5.5 MD, KPTCL informed that they had tendered recently and were on the verge of entrusting

the task. None of the states in SR could be in surplus except Tamil Nadu (manage the load

by itself) in the near future. A study at regional / national level would be useful and KPTCL

would support any such initiative.

5.6 CMD, KSEBL said that they would support the study which could be taken up. Like in

Scandinavian countries, where hydro reserves were utilized for renewable integration, hydro

reserves in Kerala could be used for banking purposes etc.

5.7 Director (HR & GO), TSTRANSCO stated that they also support the proposal.

5.8 SRPC agreed to form a Working Group of Members from each of the states, SRLDC and

SRPC Secretariat to take forward the TOR by engaging a Consultant. Constituent states of

SRPC agreed to share the financial commitment equally. It was also agreed that approvals

etc in this regard would be sought from Chairperson, SRPC by MS, SRPC. Details would

be put up to SRPC in the next Meeting for kind information.

6. DETERMINATION OF TRANFER PRICE OF LIGNITE IN RESPECT OF NLC

MINES FOR THE PERIOD 2014-19 – REQUEST FOR MODIFICATIONS IN THE

NOTIFICATION OF MOC

6.1 CMD, TANGEDCO vide letter dated 16th

June 2016 (Annexure-VI) addressed to

Secretary, MoC had requested for modification of Notification on ‘Guidelines for fixation of

transfer price of lignite’ notified by MoC vide Order No. 228012/1/2014-CA-II dated

02.01.2015 keeping in view issues highlighted in the letter. Notification included three items

viz, 1. Removal of over burden charges, 2. Inclusion of 15 days lignite inventory under

working capital and 3. Shifting from Net Block to Gross block for the tariff period 2014-19.


The issues in respect of these had been brought to attention. It had been requested to

consider the same as presently the cost of lignite is more than cost of coal (at mine head and

also at the powerhouse end) even though its calorific value is comparatively less than coal.

This increases the cost of energy from Neyveli stations. Cost thus arrived is prohibitive and

does not come under merit order dispatch.

TCC deliberations

MS, SRPC had stated that as can be kindly seen from TANGEDCO’s letter, the present

cost of lignite is more than cost of coal. With its calorific value being lesser, the merit

order for NLC lignite stations could go down further.

NLC had stated that this being a tariff related issue, needs to be resolved only at

Ministry of Coal. Guidelines for fixing lignite price were framed taking into

consideration, views of the beneficiaries and the concerns / justification of NLC. NLC

was studying the issues raised by TANGEDCO.

TANTRANSCO had expressed concern that they had worked out the rates which was

coming more than Rs.5/unit. The issue cannot be taken up with Hon’ble CERC also.

Under such circumstances, backing down may have to be resorted to.

SRPC deliberations

6.2 CMD, TANGEDCO informed that this issue had also been deliberated with Chairman,

NLC. With increased variable cost, the scheduled power of NLC may get reduced and it

was thus for NLC to take a call.

6.3 Director (P), NLC stated that they were also concerned with the increase in ECR. For

purpose of merit order dispatch, it was in the interest of NLC to cut down costs. NLC was

taking steps to cut down the cost and concern of TANGEDCO and beneficiaries would be

taken care. The letter of CMD, TANGEDCO was under review in MoC.

7. PREPARATION FOR MEETING REVISED ENVIRONMENT NORMS AS PER

ENVIRONMENT (PROTECTION) AMEN DMENT RULES, 2015

7.1 In the 29th

Meeting of SRPC, it had been noted that CEA had requested to furnish details of

preparedness and action plan in order to comply with revised water consumption and

emission norms by existing as well as new thermal units (to be installed from 01.01.2017

onwards) as per Environment (Protection) Amendment Rules, 2015 notified by Ministry of

Environment, Forest & Climate Change (MOEF & CC) (Gazette Notification dated

07.12.2015). SRPC vide letter dated 20.01.2016 had communicated the same to the

concerned utilities. MOEF guidelines had classified thermal generators into three categories

with different norms. The three classes were prior to 31st December 2003, 1

st Jan 2004 to

31st December 2016 and beyond 1

st January 2017. Existing as well as new plants were

required to meet the standards by the stipulated time lines. SLDCs had been requested to

kindly take up the matter with thermal power plants in their state. Information in this regard

was kindly to be arranged to be furnished to CEA with a copy to SRPC.


7.2 In the Sub Committee Meetings, the following had been noted:

Neyveli TS I, TS II, CEPL, KSEBL, TPCIL and NCTPS St-II had submitted the

information.

APTRANSCO had informed that APGENCO had submitted the details to their

management and details would be furnished.

NTPC had informed that they had submitted the details to their Corporate and the same

would be furnished to CEA for all NTPC stations.

NTECL, Vallur had informed that draft had been submitted to Corporate and they would

furnish the information.

TSTRANSCO had informed that TSGENCO was studying the issue internally.

NLC TS I Exp & KPCL had informed that they would furnish the information.

TCC deliberations

NTPC had informed that the details for all NTPC stations had been submitted to CEA

and a follow up meeting had also taken place. There were some constraints like space

availability in old NTPC stations. There was no proven technology for NOX control

and such concerns had been taken up with CEA. The time period of two years to

comply with norms was also difficult so they had sought for extension of time.

NTECL had informed that they had submitted the details to Corporate (NTPC

Engineering).

TSGENCO had stated that as per new norms for environment, there may not be any

necessity to implement modifications for stations which are to be closed within next 3-

5 years. For stations recently commissioned and also stations which are under

construction, this is a major concern. As such, NOX control (less than 100 pp) would

be quite difficult. SPM could be controlled by adding more fields, if space is available

while SOX could be controlled through FGD (Flue Gas Desulphurization). They were

looking forward to NTPC for similar implementation in TSGENCO stations.

Commercial implications were also to be factored since there could be additional cost

of about Rs 1 Crore /MW which would ultimately (80 p/unit) be passed on to

consumers. The total cost implication for the country could be around Rs 1.5 lakh

crores in coming 2-3 years.

CEA had stated that technical difficulties could be highlighted to CEA. To seek any

relaxation etc, support and necessary technical justification from Generators was very

much required.

NLC had informed that they were taking action regarding water and were approaching

Consultant in respect of SOX and NOX.

After deliberations, it was noted that action plan and the constraints needs to be

communicated to CEA at the earliest.

SRPC deliberations

7.3 ED (C), NTPC stated that the major parameters to be controlled were SOX and NOX and

SPM. Estimated expense to meet the revised norms was around Rs 1 crore/MW which may


get translated to about Rs 47,000 crores and rise of per unit cost by 40 paise. Lot of

modifications would need to be carried out on existing units and could have subsequent

impact on operational issues. NTPC had raised these issues and concern with MoEF and

were in discussion to address the cost issues also.

7.4 APGENCO pointed out the space constraints for older units. Even M/s BHEL had been

citing these limitations to take up the works. For new plants, the space requirements were

being taken care appropriately.

7.5 Chairperson, SRPC & CMD, TANGEDCO observed that the investments would only get

passed through to the end consumers. Huge investment (Rs 17,000 crores for TANGEDCO)

would need to be made in the next 2-3 years which was a major challenge. However

considering the practicality involved, some concession could be sought on the time lines

for complying with the norms. He informed that they had already taken up this issue and

suggested other State Governments/GENCOs may also take up the concerns appropriately.

8. ROADMAP TO OPERATIONALISE RESERVES IN THE COUNTRY

8.1 In the 29th

Meeting of SRPC it was noted that Hon’ble CERC vide Order dated 13.10.2015

on Petition No. 11/SM/2015 in the matter of Roadmap to operationalize Reserves in the

country had directed as follows:

(b) The Commission reiterates the need for mandating Primary Reserves as well as

Automatic Generation Control (AGC) for enabling Secondary Reserves.

(i) All generating stations that are regional entities must plan to operationalise AGC along

with reliable telemetry and communication by 1st April, 2017. This would entail a one-

time expense for the generators to install requisite software and firmware, which could

be compensated for. Communication infrastructure must be planned by the CTU and

developed in parallel, in a cost-effective manner.

(ii) On the other hand, National/Regional/State Load Dispatch Centres

(NLDC/RLDCs/SLDCs) would need technical upgrades as well as operational

procedures to be able to send automated signals to these generators. NLDC /RLDCs

and SLDCs should plan to be ready with requisite software and procedures by the same

date.

(iii) The Central Commission advises the State Commissions to issue orders for intra-state

generators in line with this timeline as AGC is essential for reliable operation of India’s

large inter-connected grid.

(c) To start with, a regulated framework in line with the Ancillary Services Regulations

would need be evolved for identification and utilizing of spinning reserves and

implemented with effect from 1st April, 2016. This framework may continue till 31

st

March, 2017.

……………


(d) In the long term, however, a market based framework is required for efficient provision

of secondary reserves from all generators across the country. For this, NLDC/POSOCO

is directed to commission a detailed study through a consultant and suggest a proposal

to the Commission for implementation by 1st April, 2017, giving due consideration to

the experience gained in the implementation of Spinning Reserves w.e.f. 1st April, 2016.

8.2 In the earlier Meeting the following had been noted:

NLDC had informed that they had conducted regional level workshop to create

awareness on the implementing process. AGC issues were being looked into by the

Expert Committee of Members. Concept paper on operationalization of reserves has

been submitted to Hon’ble Commission. Issue regarding implementation of reserves

from 1st April 2016 was discussed and it was noted that each RLDC would compute the

ACE at the regional level which would be displayed on the website. Regional entity

generators would be required to take appropriate action. They had sought some more

time from Hon’ble CERC for operationalizing the reserves since many other issues such

as telemetry etc., were to be addressed. NTPC was responding positively and the

process of transmitting signals to the station as a pilot project was being contemplated in

each region. Changes in generators side controls were required and NTPC was taking a

lead in it.

SRPC had noted that sensitization and more interaction with SR utilities was required

and NLDC/SRLDC were requested for needful action in this regard.

TCC deliberations

MS, SRPC had stated that in the long term, a market based frame work was to be in place.

Ancillary Services had been implemented from 12.04.2016 with manual control. SRLDC

had addressed a letter dt.5.7.2016 informing that Secondary Control (AGC) through Pilot

Project has been planned which could be scaled to All India level. Also, Area Control

Error (ACE) was to be computed and displayed in RLDC’s website.

SRLDC had informed that a Pilot Project had been taken up through M/s Siemens and

NTPC. Action was being taken for the detailed report of NLDC through Consultant and

in a couple of months, the report would be submitted. Feedback on Ancillary services had

been given to Hon’ble CERC. ACE would soon be posted on website for the benefit of all

entities. POSOCO would also be conducting a workshop on AGC issues.

After deliberations, it was noted that NLDC/SRLDC would conduct workshops as part of

capacity building exercise and also display ACE on its website.

8.3 SRPC noted the above.

9. COMPLIANCE OF ORDER OF HON’BLE CERC IN PETITION NO. 420/MP/2014

– IN RESPECT OF LVRT AND OTHER PROVISIONS OF CEA/CERC

REGULATIONS

9.1 Three Meetings have been held so far for compliance of Hon’ble CERC’s Order in Petition

No.420/MP/2014 in respect of LVRT and other provisions of CEA/CERC Regulations. No

tangible progress is observed though Hon’ble Commission has specified time lines for a

number of actionable points for various entities.


Following issues merit kind attention for ensuring action for compliance:

Submission of data as per Format A & B annexed with MoM of 1st Meeting (held on

05.02.2016).

Nomination of Nodal Officer from APSLDC was pending. Ensuring participation of

Nodal Officers in Special Meetings.

STU/SLDC (except TSSLDC) to call for a meeting with Wind Developers.

STU/SLDC to ensure strict compliance of CEA’s Connectivity Regulations for all WTGs

commissioned after 15.04.2014.

STU/SLDC to ensure strict compliance of LVRT feature for all Solar Generators

connected above 11 kV (whose NIT was not issued by 05.01.2016).

SLDCs to prepare quarterly reports and submit to SRPC with regard to monitoring of

installation and performance of LVRT installed on existing WTGs.

STUs to study line loading in their systems to ensure N-1 compliance and submit reports

in this regard to CEA by 10.3.2016.

STU/SLDCs would communicate to the Wind Developers for setting the characteristics

of LVRT feature (and other provisions of CEA Regulations) as envisaged in CEA

Connectivity Regulations within end of July 2016. Wind Developers needed to certify

the same by end of August 2016. Status on this need to be covered in the quarterly

reports.

PMU may be required at Wind pooling stations and Wind Developers/STU/DISCOMs

could take pro-active steps in this regard.

STU/SLDC to approach respective SERC’s for the following:

To make suitable provisions in their relevant regulations or through orders to provide

for mandatory installation of LVRT in WTGs which fall within their jurisdiction.

To make suitable provisions in their regulations and through orders to ensure that

solar/wind generators provide real time data to SLDCs as per the provisions of Grid

Code. SLDCs to ensure availability of data in respect of real time data from their Data

Acquisition Systems of solar/wind generators in SCADA systems to respective RLDCs

as per the provisions of the Grid Code.

To issue appropriate regulations/orders to align with the provisions of the Grid Code in

respect of forecasting and scheduling for intra-State solar/wind generators and demand

estimation by SLDCs.

CTU and STUs to make provisions in this regard in their Connection Agreements to

ensure that wind energy generators comply with the provisions of CEA Technical

Standards for Connectivity Regulations for grid connectivity before granting

connectivity to the grid.

9.2 SRLDC vide letter dated 15.07.2016 (Annexure-VII) had taken up with CEA in this

regard.

9.3 The issue had been deliberated in the Special TCC Meeting held on 02.08.2016.

9.4 The following was discussed and noted in the TCC:

All states had identified and communicated details of Nodal Officers.

APTRANSCO had informed that they had conducted a Meeting with Renewable

Developers and formats had been given to them to be filled up appropriately. Recently,


on 24.08.2016, requirement of data (as per format), LVRT, forecasting, scheduling etc

had been taken up. A Follow up Meeting was also planned on 07.09.2016.

KPTCL had informed that they had conducted a Meeting on 17.08.2016 and generators

had been advised to furnish details by month end. SRLDC pointed out that CEA

Connectivity Regulations were to be ensured from 15.04.2014 (KPTCL had informed

that they were ensuring the same from April 2015).

APTRANSCO, KPTCL & KSEBL had agreed to furnish data in the requisite format by

10th

September 2016.

Quarterly reports for two quarters (Jan-March 2016 & April-June 2016) would be

furnished by 15.09.2016.

TN would conduct the meeting with WTGs by next week.

KPTCL had expressed concern that for Solar, it has been observed that large amount of

MVAR (8 to 10%) is being drawn from the grid. It suggested that automatic reactive

compensation of around 10 % for solar generators should also be made part of

regulations.

SRLDC had stated that N-1 was very necessary for RE generators and STUs should

make RE generator’s system N-1 compliant. APTRANSCO stated that as per CEA’s

Transmission Planning Criteria, N-1 was not envisaged for complete Wind and Solar

evacuation. The interest of STU should not be compromised for RE developers. It was

clarified that in accordance with Transmission Planning Criteria, N-1 may not be applied

to immediate connectivity of wind/solar farms with ISTS/Intra-state grid i.e. the line

connecting the farm to the grid and step-up transformers at the grid station.

States were requested to study N-1 compliance in their system and submit details to CEA

within a period of 3 months.

Recommendations finalized in the Special Meeting on LVRT were noted for necessary

compliance of CERC Order. All turbines/units commissioned and being commissioned

after 15.04.2014 needed to comply with CEA Connectivity Regulations. All WTGs

equipped with LVRT should be directed to implement the settings in line with CEA

Connectivity Regulations.

SRLDC had informed that in recent interactions with Wind Developers, they were

voluntarily coming forward for MVAR injection also. Some of the WTGs were tripping

in Coimbatore area when the voltage was going below 89 kV (rated voltage of 110 kV) .

It was ambiguous whether the generation was backed down or the WTGs had withdrawn

and it was thus in the interest of the WTGs to go for LVRT.

KPTCL had raised certain issues on low voltage conditions with respect to WTGs and

the requirement for LVRT. It was clarified that LVRT was required during fault

conditions in nearby locations and not during steady state voltage conditions being

referred by KPTCL.

TANTRANSCO had informed that they had not faced WTGs withdrawal cases this year.

This may be due to VAR injection by new machines in Udumalpet and Coimbatore areas.

During one incident last week during bus fault at Tudaliyur (Udumalpet area), around

450 MW of Wind had withdrawn and had come back within five minutes. SRPC pointed

out that it appeared that LVRT was not set as per CEA characteristics and the WTGs had

withdrawn in this case.


On a query from TSTRANSCO about accepting the Manufacturer’s Certificate for LVRT

(without field testing provision) compliance, it was clarified that TSTRANSCO/other

constituents could kindly refer the MoM of Special Meetings on LVRT available on

SRPC website for necessary compliance.

TSTRANSCO had informed that they had developed their own document with regard to

Wind and Solar Integration which includes substation automation, protection, LVRT,

CEA Regulations Provisions etc for smoother RE integration. TSTRANSCO requested

CEA to cover PMU installation at Pooling Stations, in the draft amendment.

CEA had informed that draft amendment to Connectivity Regulations would be made

available shortly on its website for comments. Most of the concern expressed by the

constituents had been covered in the draft amendment.

SRLDC had suggested that reference to voltage levels could be removed in the draft

amendment. Regulations could be framed for grid connected generators and for

standalone generator as it was leading to ambiguity in interpretation.


10. LOW VOLTAGES

10.1 A Special Meeting on low voltages was held on 18th

April 2016 at SRPC, Bengaluru

(minutes available at SRPC website). After deliberations, the following had been

recommended:

KSEBL/TANTRANSCO/KPTCL to implement UVR scheme and settings to be in

place as recommended by 2nd

May 2016 at the following locations/nodes and furnish

compliance report. In case not implemented by 2nd

May 2016, non-compliance

messages would be issued by SRLDC.

Kerala: Trichur, Palakkad & Kochi

Tamil Nadu: Udumalpet, Salem & Hosur

Karnataka: Nelamangala, Somanahalli, Hoody and Bidadi

UVRs should not be bypassed or kept out of service. IEGC clause 5.2 (t) was referred

‘All Users, CTU and STUs shall provide adequate voltage control measures through

voltage relay as finalized by RPC, to prevent voltage collapse and shall ensure its

effective application to prevent voltage collapse/ cascade tripping…’

Physical Regulatory Procedure as enumerated in the minutes was agreed for

implementation. Step 4 was a critical step and thus SLDCs needed to take action to

avoid any situation which would compel SRLDC to take such step.

In case Specific instructions for opening 220/230 kV and below lines were not adhered

by SLDCs it would be deemed as violation of provisions of IEGC/EA 2003.

SLDCs to take action proactively by observing falling trend/pattern of voltages even

before receipt of SRLDC messages. SLDCs to also furnish the physical regulatory

measures to be taken up at low voltage nodes in their system. It was felt that physical

regulatory measures at 220 kV and below would give optimum results than physical

regulatory measures by SRLDC.

SRLDC real time messages/instructions to be adhered within 15 minutes of issuance

and the action taken report should be furnished within 30 minutes.


As a drive, faulty capacitor banks to be rectified immediately.

Chairperson, SRPC would be kindly requested to take up the issue with the concerned

since it was threat to system integrity.

Constituents were requested to revert back on utilization (operational/commercial

limitations & possibilities) of reactive support from wind/solar units even when they

are not generating.

States to furnish data of load management actions taken to overcome low voltage

conditions.

10.2 SRLDC had also presented the Study (SR snapshot of 0915 Hrs on 15th April, 2016) to

ascertain requirement of capacitive compensation in low voltage areas of SR. In the study,

the capacitors were lumped at 220/230kV Station on 110/66 kV side and Capacitor

requirement had been arrived as below:

Additional 15 % more capacitor compensation needs to be added to compensate for

outages/maintenance of capacitor banks and considering the future growth.

All states were requested to install the capacitors as suggested before December 2016 i.e.

before next high demand period for SR. Since time was limited, immediate action was

required to be taken.

10.3 Chairperson, SRPC vide letter dated 28.04.2016 (Annexure-VIII) had taken up the issue

with States for necessary action.

10.4 A Special Meeting was conducted on 17th

June 2016 (MOM available at SRPC website)

with respect to pending KPTCL issues. The following recommendations had been finalized

in that Meeting:

Retrofitting of Somanahalli and Hoody Capacitor Bank of 30 MVAR each to be

expedited. KPTCL to furnish the action plan within 2 weeks.

Faulty Capacitor Banks to be rectified in Bengaluru adjoining areas of KPTCL system.

KPTCL to furnish the details of faulty capacitor banks and action plan for rectification

within 2 weeks.

Sub-Station

Capacitor –

Requirement

in

MVAR

Constituent wise

requirement

Nelamangala 160 Karnataka-505 MVAR

Hoody 185

Somanahalli 160

Mywadi 275 Tamil Nadu – 1025

MVAR Arasur 330

Salem 210

Hosur 210

Palakkad 12 Kerala – 102 MVAR

Trichur 90


KPTCL / SLDC would call for a meeting with BESCOM with participation at

appropriate level within 2 weeks and following issues would be taken up:

Special drive on rectifying the faulty capacitors in BESCOM in a time bound manner

with the details of status of capacitor banks.

Tap optimization in the distribution transformers of BESCOM (to reduce drawal of

VAR)

Study of additional capacitor requirements. This needs to be taken up by BESCOM on

urgent basis.

Discom wise or location wise limitation on MW drawal due to low voltages and high

MVAR drawal.

Extending scope of maintaining power factor by other consumers (presently being

limited to HT Consumers).

BESCOM to identify feeders for Physical Regulatory Procedure based on MVAR

drawal by the respective feeders

Senior Managements of KPTCL and BESCOM to be appraised that MW drawal

capacity had reached saturation and could be curtailed unless voltage profile is

improved and also if sub--transmission system is not strengthened on war footing basis.

Future increase in loads and even share from Yeramarus, Bellary, LTA etc., would be

difficult to meet keeping in view the voltage profile.

SLDC could envisage taking up the issue with Hon’ble KERC to ensure that BESCOM

takes appropriate steps to improve voltage profile.

A Task Force could be set up on urgent basis to identifying the issues (Low voltages,

high MVAR drawal, strengthening of transmission & distribution system, drawal

capability of Bengaluru area , reactive requirement at DISCOMs etc) and to finalize the

action plan to resolve these issues in a time bound manner.

10.5 In the OCC/Special Meetings, the following had been noted:

UVR had been implemented at Udumalpet (TN), Palakkad, Trichur & Kochi (KER).

Udumalpet - Palakkad SPS had been implemented by KSEBL on 22.06.2016.

TCC deliberations

KSEBL had informed that two stages of UVR had been implemented at Trichur,

Palakkad and Kochi.

TANTRANSCO had informed that two stages had been implemented at Udumalpet. It

was also informed that voltage at Arasur had improved due to commissioning of

Karaimadai SS. New stations at Palvadi and Kanchipuram were expected to be

commissioned shortly and therefore the need for UVR at Hosur and Salem could be

reassessed. It was clarified that requirements for Karnataka, Kerala and Tamil Nadu had

been firmed up based on studies by SRLDC. Chairperson SRPC had also taken up this

issue with other Chairpersons/MDs. TANTRANSCO agreed to implement UVRs at

Salem and Hosur within 2 months.

SRLDC/SRPC had expressed concern that UVR in Karnataka system was not being

implemented despite repeated follow ups. KPTCL had informed that feeders list for UVR

had been furnished to BESCOM for approval. The scheme would be implemented at

Somanahally, Nelamangala, Hoody and Bidadi.


TANTRANSCO had informed that in respect of 206 MVAR capacitors at 11kV level in

Coimbatore area, administrative approval had been received and tendering activities were

being undertaken. In respect of other areas, study with regard to SRLDC recommended

quantum of 1,025 MVAR would be completed in a months’ time.

MS, SRPC had stated that KPTCL and BESCOM management may be kindly apprised of

the saturation in drawal due to low voltage issues as discussed in the Special Meeting.

KPTCL informed that they had taken up issues regarding capacitor installation, tap

optimization, extra penalty on PF etc with BESCOM. A Meeting with BESCOM would

also be held shortly.

SRPC deliberations

10.6 SRPC noted the above and suggested for necessary action by the respective entities.

10.7 MD, KPTCL said that UVR scheme cannot be implemented by 09.09.2016 and around 3

months additional time would be required. He added that it would be ensured before

November 2016.

11. PATROLLING / MAINTENANCE OF CRITICAL LINES AND SUBSTATIONS

11.1 In recent times insulator tracking has been observed in Transmission lines and Substations

located in the coastal and polluted areas and SRPC vide letter dated 05th

May 2016

(Annexure-IX) had communicated to the concerned in this regard. Transmission Lines and

Substations in the most vulnerable terrain, coastal and polluted areas were to be categorized

for monitoring to ensure that Patrolling and Maintenance is being carried out as per

Patrolling guidelines. Format for furnishing details of schedule / Patrolling and Maintenance

carried out of the critical Transmission lines and Substations had been enclosed. MEPL,

SEPL, NTPC Simhadri, APTRANSCO & KSEBL had furnished the details.

TCC deliberations

MS, SRPC had pointed out that the issue was very critical and concerted action was

required.

APTRANSCO had stated that the guidelines were being followed. They had carried out

silicon coating at Kalpakka S/S. Silicon coating works at VSS and insulator replacement

works were also being undertaken.

TCC had noted that concerned entities need to kindly take necessary steps to ensure that

Patrolling and Maintenance is carried out regularly as per the Patrolling Guidelines.

SRPC deliberations

11.2 MS, SRPC highlighted the need for adhering to Patrolling Guidelines specifically for critical

elements/sub-stations whose details had already been communicated. This assumed

significance keeping in view Orders of Hon’ble CERC and also IEGC Provisions.

11.3 SRPC noted the TCC deliberations and suggested the concerned entities to initiate necessary

action.


12. CONTINGENCY OF 400 kV NELLORE - NELLORE PS LINES

12.1 The contingency of 400 kV Nellore- Nellore PS is under deliberation in various forums.

12.2 The following had been noted in the 29th

Meeting of SRPC :

NLDC had stated that they were envisaging a separate bid area for NPS connected

Generators. They would inform Hon’ble CERC regarding formation of separate bid

area. Power Exchanges would also be apprised accordingly.

TPCIL had suggested that alternate means like re-conductoring (HTLS) for this short

line could be considered. Any other measure which could help enhance evacuation

from this complex also needed to be explored.

CTU had pointed out that NPS-Nellore line included PGCIL and MEPL/SEL sections

and there could be issues in changing the conductor to HTLS for the entire line. There

could be equipment rating issues in the bay also. Since in the long term, the

interconnector was planned to be kept open, changing to HTLS did not appear to be an

economically viable solution. With bid area there could possibly be higher

curtailment, hence till other identified system came up, SPS (generation backing

down) based higher evacuation could be considered as an option.

SRPC had noted that already more than 2,000 MW of generation was available at NPS

and the first unit of NCC was also expected by May 2016. Any tripping of these lines

with generation loss would have adverse impact on the already loaded critical

inter/intra regional sections. STOA applications thus need to be judiciously processed

keeping in view the line flows.

TCC noted that NCC Unit I was scheduled to be commissioned by May 2016 and thus

process of formation of separate bid area needs to be completed at the earliest.

CTU stated that they would also examine other options like shifting of one or two

lines etc. for enabling higher evacuation from the complex.

12.3 In the OCC Meetings, SRLDC had informed that NLDC had called a Meeting with the

Power Exchanges in this regard. SRLDC had stated that they would carry out mock

computations to identify the export limits from the complex.

12.4 Subsequently SGPL (formerly NCC) vide letter dated 23.06.2016 (Annexure-X)

addressed to CEA had taken up the issue regarding evacuation from Nellore complex.

12.5 The following was deliberated in the TCC Meeting:

MS, SRPC had informed that a Meeting on this issue had been conducted at CEA on

05.08.2016, and the minutes were awaited. Another meeting was also held at CEA on

02.08.2016 (CEA MoM dated 05.08.2016 at Annexure-XI) on temporary

reconfiguration at Bidadi which has been implemented.

CTU had informed that there were basically two issues - high loading of Nellore- NPS

and high voltage at Nellore. In the 34th

SCPSPSR it had been noted that the

interconnector was to be opened to control short circuit levels. With temporary

reconfiguration of Tumkur-Bidadi, around 550 MW of power was flowing on Gooty-

Tumkur lines. In case required, the interconnector could be closed during critical

conditions. The system would be N-1 compliant to evacuate power from the complex. If


the interconnector is opened, other lines get loaded and voltage profile at Nellore also

improves.

SRLDC had informed that the N-1 limit was around 1,700 MW (750 C conductor) for

Nellore- NPS lines. Complex generation would be around 4,140 MW and flow would be

more than 1,200 MW on each line which would violate N-1 criteria. CTU could therefore

consider (i) strengthening this short line or (ii) making the line through to Thiruvalam (by

bypassing the Nellore (PG) 400 KV) or (iii) connecting SEPL/MEPL to Nellore(PG)

through switching arrangement (by bypassing NPS 400 KV).

CTU had informed that were not envisaging any issues with regard to LTA/ MTOA in

the Complex. They would examine suggestions of SRLDC in this regard.

SRPC deliberations

12.6 ED, PGCIL stated that there was no N-1 violation envisaged. However, they would examine

proposal of SRLDC in this regard.

13. STATUS OF GENERATION IN GENERATING STATIONS

13.1 Issue regarding low generation in KKNPP, NLC TS-II Expansion, NTECL and NTPL had

been deliberated in the 29th

Meeting of SRPC. The following had been noted:

NPCIL had informed that full generation of 1,000 MW was expected by the end of

March 2016.

NTECL had informed that second grab unloader had been commissioned on

17.02.2016 and conveyer related issues have been resolved. CEA team had also visited

after the commissioning of second grab unloader and they were satisfied that there

were no unloading constraints. Against requirement of 4.5 rakes/day, they were

getting only 2.6 rakes per day till January 2016. From February, they were getting 3.5

rakes per day and with this the PLF had also increased. Coal was also planned to be

availed through the Dhamra port and the Railways has given approval for 25

rakes/month through Dhamra Port on 04th

March 2016.

NLC had informed that NLC TS II Expn units were first of its kind at this capacity.

Problems had been narrowed down but there were issues of falling of the refractory.

Experts had been called and specification of the refractory has been changed. Certain

modifications were being carried out and all the issues were expected to be resolved

within 3-4 months (by July 2016).

NTPL had informed that with assured domestic coal supply, blending issues would get

resolved. There were no coal issues and the PLF for the month of February was 81%

(Availability was around 86%). The generation would be increased to about 90 %.

They were getting 1 LT coal from MCL and balance was being imported.

TCC had observed that KKNPP and other units need to furnish realistic expected

generation level/revival dates enabling improved planning. KKNPP and NLC TS II

Expn were requested to improve their generation levels.

13.2 Level of generation of some ISG stations is given below:

Station Mar’ 16 Apr’16 May’16 June’16 July’ 16

KKNPP

U1, NPCIL

Generation

in MU

639.22 707.68 720.84 721.38 748.73

PLF 86% 98% 97% 100% 101%


13.3 The following was noted in the OCC Meetings:

NTECL had informed that pipe conveyor issue had been resolved during June 2016.

Supply of coal through Dhamra port had started. NTECL had requested SRPC to take

up the issue regarding coal supply. MS, SRPC vide letter dated 18.05.2016

(Annexure-XII) had taken up the issue with MCL.

Modification works on NLC TS II Expansion Unit I had been carried out.

TCC deliberations

It had been noted that the performance of NTECL units had improved.

NLC had informed that they had narrowed down the issues which were related to

refractory etc and had carried out necessary modifications. Unit-2 was generating

around 220-225 MW of power. Unit-1 would be lighted up in few days after

modification works. A PLF of about 80-85 % was anticipated.

SRPC deliberations

13.4 Director (P), NLC informed that they had achieved PLF of 49 % in TS II Expn during the

last month. All issues were getting resolved and PLF of around 75-80 % was anticipated

in the coming months.

14. REVIEW OF ULDC / SCADA/COMMUNICATION

14.1 In the earlier Meetings, the following had been noted:

Review of SCADA and Communication availability was being carried out in the

OCC/Special meetings.

Hon’ble Commission has issued Order dated 29th January 2016 in respect of Petition

No.7/SM/2014. The following direction merits attention please:

‘14. Under the Grid Code, it is the responsibility of all users, STUs and CTU to

provide systems to telemeter power system parameters in line with interface

requirements and other guideline made available by RLDC and associated

communication system to facilitate data flow up to appropriate data collection point

on CTUs system. Telemetry of on-line operational data is not only essential for

effective monitoring of grid but also forms key input for effective running of State

estimation and other EMS tools at RLDC and SLDCs, which are essential for reliable

and secure operation of the grid. In view of the critical importance of telemetry and

associated communication system for ensuring reliability in operation of the grid and

optimum utilization of the transmission system, there is an imperative need for all

users to establish the telemetry and associated communication system in time bound

NTECL,

Vallur

Generation

in MU

500.02 742.78 707.9 554.98 582.03

PLF 45% 69% 63% 51% 52%

NTPL,

Tuticorin

Generation

in MU

538.27 592.67 576.35 295.47 478.17

PLF 72% 82% 77% 41% 64%

NLC TS II

Exp

Generation

in MU

31.62 106.59 77.40 128.81 181.68

PLF 9% 30% 21% 36% 49%


manner so that the power system operation may be most reliable and optimum.

Moreover, in view of the requirement of communication system for a generating

station and sub-station, the planning should be done in advance by the generating

company and transmission licensee to ensure that necessary system are in place

before commissioning of generating station or sub-station to take care of the

communication requirements even at the time of injection of power infirm by a

generating station and sub-station during testing.

……………………………..

17. We further direct all the utilities/generating companies which have to still

establish telemeter power system parameters as per details given in para11 above to

provide data to RLDCs/SLDCs as per the provisions of the Grid Code and CEA Grid

Standards Regulations by 31.7.2016. If the utilities/generating companies do not

comply with our directions, it will be construed as non-compliance of the order of the

Commission and appropriate proceedings under Section 142 of the Electricity Act,

2003 shall be initiated against such utilities/generating companies. NLDC is directed

to submit user- wise latest status of telemetry, by 31.8.2016.

18. NLDC and respective RLDC are directed to up-date the status of telemetry every

month at their web-site and persistent non-availability of data from the generating

stations/sub-stations be taken up in RPC meetings for appropriate direction and

action.’

APTRANSCO had expressed concern over the differences between SCADA and SEM

values. There were huge operational and commercial implications and the issue had

been raised by AP continuously TSTRANSCO & TANGEDCO had also raised similar

apprehensions.

After deliberations, the following had been agreed in the earlier TCC:

Monthly meetings would be held to resolve the issues. Representatives from SLDC

and SCADA of each state would attend the Meeting along with participation from

PGCIL, SRPC Ssecretariat. SRLDC would coordinate the Meetings.

Other issues on SCADA/ULDC features would also be discussed during the

Meetings. The concerned OEMs may also be called as per requirements. States

were suggested to give their agenda points.

State-wise reconciliation would be continued.

AP report would also be reviewed keeping in view ISTS touch points and manual

entries

The following was noted in the earlier SRPC meeting:

CMD, APTRANSCO & Chairperson SRPC had expressed serious concern over the

long pending issue. It was noted that a crash action plan was highly essential.

SR-II, PGCIL had assured that communication issues would be sorted out.

Communication failure issues need to be communicated to PGCIL at the earliest in

real time.

It was agreed that PGCIL & SRLDC would nominate a Co-ordinating Officer at

senior level. Periodic monitoring/review would also be carried out during next 2-3

months. Mr. V.K. Khare, GM, SR-II and Mr. P. Ranga Rao, AGM, SR-I were

identified as Co-ordinating Officers from PGCIL to address the associated issues.


14.2 SCADA/communication issues were deliberated in two Special Meetings held on

21.03.2016 & 17.05.2016 and also in OCC meetings. The following was noted in

OCC/Special meetings:

Steps needs to be taken on the taken on the actionable points finalized in the Special

/ OCC meetings.

SCADA/Communication issues addressing procedure was firmed up which needs to

be followed by all the entities. Details of Nodal officers for contacting in State /

PGCIL were also noted.

Redundant channel availability from Bhadravathi, Talcher etc., was to be made

through by PGCIL. New RTU was to be made available at Talcher by NTPC.

PGCIL to ensure availability of communication link across back up (main) control

centers of SLDCs to back up control centers of SRLDC (at NRLDC, New Delhi).

Data validation with respect to TSTRANSCO was carried out on 17.03.2016.

In respect of AP the following had been noted:

Many of the interstate lines between AP and Telangana were having RTU only on

one side. Urgent action to be taken by AP and Telangana to provide RTUs on the

other side also which can act as standby.

Considerable time drift was observed in some of the SEMs. These SEMs (> 10 min

drift) are to be replaced immediately. It is understood that OEMs had consented to

replace/rectify these SEMs on immediate basis.

It was clarified that as per CEA Metering Regulations, respective transmission

licensees would provide/replace/rectify SEMs on respective ends.

14.3 A reconciliation Meeting was convened by SRLDC with APTRANSCO on 03.03.2016 and

19.7.2016. Data validation for Puducherry, Karnataka, Kerala and TN was carried out on

20.04.2016, 28.04.2016, 28.04.2016 and 07.06.2016 respectively.

TCC deliberations

MS, SRPC had informed that there had been some perceptible improvement and PGCIL

needs to be complimented for attending the pending issues. On 23rd

August 2016, a

Meeting was held to discuss URTDSM, SCADA and Communication issues (MoM

available at SRPC website). SCADA vs SEM validation for all the states has been

carried out. For AP, the validation was carried out three times and recently again at

Hyderabad on 19.8.2016 (MoM at Annexure-XIII). Few remedial actions like

rectification/procurement of transducers/RTUs at some locations had to be carried out.

In the recent validation, it had been noted that there was significant improvement and

issues contributing to difference like data hanging etc., were discernibly identified.

SRLDC had informed that issues were progressively being resolved and many of the

pending points were under convergence/completion. Status as on 31.08.2016 was to be

furnished to Hon’ble Commission. Entities to complete/rectify pending field inputs and

furnish status updates to SRLDC.

APTRANSCO had informed that SCADA vs SEM differences were still around 15-20%

at times. In certain cases, during tripping of 400 kV lines, the field input was not getting


reflected in SCADA. SRLDC had clarified that all over the regions, the difference was

equal to or less than about 5%. In last 15 days the difference was within 5% for 13 days

while on 2-3 days, it was going up to 10-15%. SRLDC in coordination with AP would

identify such nodes having more differences and the same would be rectified within a

month.

SRLDC had informed that they were working out SCADA computation points for drawl

of the constituents in line with the existing SEMs.

KSEBL had expressed concern that the VC facility was not getting stabilized (due to

SDH equipment issues) and also those personnel of M/s.Tejas were not available at

SLDC as per the contract clause. MS, SRPC had informed that this issue had been

deliberated in the Special meeting held on 23.08.2016 and the Vendor had assured of the

necessary corrective action. SRLDC had assured that the issue would be resolved by 30th

August 2016. SR-II had assured that appropriate person from M/s.Tejas would be

deputed to attend the problem.

KSEBL had informed that regarding AMC by M/s Alstom, a separate meeting with

participation from SRLDC, PGCIL and other states was required as some of the punch

points were to be clarified / cleared and M/s Alstom were claiming payments. AP &

Telangana also supported for a regional level meet to sort out the issues. SRLDC had

informed that they had called M/s Alstom for two days meeting to sort out Contract

related issues. AP, Telangana and Kerala would also be invited to address common

issues. SR-II had informed that a Meeting (on 9.6.2016) with KSEBL, M/s Alstom and

PGCIL was held on these issues. Some punch points were not possible to complete due

to design issues while others had been agreed to be completed. MoM of the meeting

could be referred and the pending punch points could be converted into payment and

recovered. TSTRANSCO had stated that issue regarding recovery and the necessity of

completing the pending punch points needed to be deliberated. SRLDC had assured that

all the issues of the states with M/s Alstom would get settled in the proposed meeting.

SRPC deliberations

14.4 MS, SRPC informed that there was significant improvement in SCADA performance.

SCADA Vs SEM reconciliation had also been taken up and the issues were getting settled

as part of an ongoing exercise.

14.5 Director (G & TM), APTRANSCO requested that the gap between SCADA and SEM be

narrowed down further.

14.6 GM, SRLDC said that nationally the difference between SCADA and SEM was of the

order of 5%. In recent exercise for 30 days, the difference had been less than 5% for 25-26

days, while for 4-5 days it had been10-20%.The gap would be further narrowed down in

coordination with APTRANSCO within a month.

14.7 CMD, KSEBL pointed out that there were certain deficiencies in the SCADA system

provided by M/s Alstom and the issues had been brought to the notice of PGCIL. The

price (total-LD) to be paid despite about 16 observed deficiencies needed scrutiny.

14.8 GM, SR II, PGCIL assured that all the identified issues would be addressed in a Meeting.


14.9 ICCP link between RTAMC & SRLDC

14.9.1 In the SCADA Meetings, PGCIL had suggested ICCP link connectivity between RTAMC

and SRLDC. SRLDC had stated that present system of data through dual communication

channels from the RTU shall be ensured. The proposal of providing data from RTAMC to

SRLDC through ICCP link as a supplementary additional arrangement could be reviewed

at an appropriate level. PGCIL had pointed out that in some of the other regions, the link

was being established and thus the apprehensions of SRLDC were not understood. It had

been suggested that this issue be taken up in TCC/ SRPC forum.

TCC deliberations

ICCP link connectivity between RTAMC and SRLDC as third connectivity was agreed.

The data requirement in this regard would be mutually settled between RTAMC and

SRLDC.

14.9.2 SRPC noted the above.

15. TTC/ATC

15.1 In the 29th

Meeting of SRPC the following had been noted:

In the 4th

meeting of NPC held on 10th

December 2015 (MoM dated 1.1.2016), it had

been decided that to begin with, power system study for assessment of operational limits

/ power transfer capability for each state would be done by the concerned RLDC in

association with concerned SLDC. Monthly TTC/ATC would be uploaded by SLDCs in

their respective websites and also communicated to concerned RLDC & NLDC

subsequently.

Some of the states had cited man power crunch to carry out the ATC/TTC computations

presently. SRPC had pointed out that this was a regulatory requirement. Further as per

decision taken in the NPC Meeting, States needed to carry out ATC/TTC computations

of their area. Besides this helped state utilities in gaining insight to likely constraints and

in taking proactive corrective measures.

APTRANSCO had stated that they would nominate officials for this exercise.

After deliberation, the following was agreed /noted in the TCC:

As per 4th

NPC Meeting, all states were required to compute monthly ATC/TTC limits

for their control area.

SRLDC/NLDC had agreed to render necessary assistance/conduct workshops for the

purpose.

For the base cases, constituents were suggested to kindly coordinate with SRLDC.

SRLDC had assured of full assistance in this regard.

In the SRPC meeting, It was agreed that capacity building/workshop on ATC/TTC

computation would be held as part of the exercise.

15.2 In the OCC Meetings, the following was noted:

Manpower issues were once again raised by AP, TS and KAR SLDCs.

Nominations for dedicated study groups from AP and TS were still pending.


ATC/TTC work shop for KPTCL, KSEBL & TANTRANSCO was held on 31st

March/1st

April 2016, 12th

/13th

May 2016 and 6th

/7th

June 2016.

Works shop for APTRANSCO and TSTRANSCO was scheduled for July/August 2016

Converged PSSE base cases to be furnished to SRLDC.

15.3 In the 5th


April, 2016 (refer MoM at Annexure-II), RPCs had

been requested to have regular interaction with states for carrying out power system study

in their network.

15.4 In the TCC, the following was noted:

SRLDC had stated that intra-state TTC/ ATC computations could also help in transfer

of power among SR-Constituents and they would render full assistance in this regard.

For instance, TN power could be sold to Telangana during the months of June-

September.

CEA had stated that intra-state ATC/ TTC computations were very much essential to

implement GoI initiative of Discovery of Efficient Electricity Price (DEEP). In DEEP

platform, certain transactions were cleared but could not be materialized due to

TTC/ATC limitations. States need to furnish ATC/TTC computations, long term,

medium term and short power purchase agreement/plans and procurement through this

platform. This would help in reducing the cost of power purchase and uphold

transparency. ATC/TTC computations transparency has been achieved at CTU/RLDC

level and same has to be achieved at state level to ensure that all are on same platform.

TSTRANSCO had informed that they had recently imparted training to their personnel

at SRLDC. AP was also kindly requested for similar action.

SRPC deliberations

15.5 GM, SRLDC observed that there was good opportunity for exchange of power between

constituents of Southern Region. There were constraints in WR and ER towards NR but

there were no constraints in SR. He requested the constituents to nominate officials to

coordinate with SRLDC to identify these trading possibilities so that it would be

commercially beneficial to all. He added that all states need to host ATC/TTC

computations on their websites.

15.6 Director (G & TM), APTRANSCO assured that despite manpower shortage, they would

nominate some officials to get trained for ATC/TTC computations.

15.7 SRPC noted the above and suggested that concerned entities initiate appropriate action.

16. UPCOMING TRANSMISSION SYSTEM

16.1 MS, SRPC informed that a Committee for finalization of compensation in regard to Right of

Way (RoW) for transmission lines in urban areas has been constituted by MoP vide OM

dated 11.08.2016 (Annexure-XIV). Principal Secretaries of Karnataka and Kerala from

Southern Region were also Members of this Committee

SRPC noted the above.


16.2 Pending transmission elements in WR and SR for proper utilization of 765 kV

Raichur- Sholapur line (Out of planned 18 elements)

16.2.1 Updated status of pending transmission elements in WR and SR for proper utilization of

765 kV Raichur - Sholapur lines (out of planned 18 elements) is furnished below please:

TCC deliberations

SR-II, PGCIL had informed that there was not much progress in three districts,

Bengaluru Urban, Bengaluru Rural and Tumkur. Only 5 km of stringing work was

pending in Tumkur-Yelahanka line.

KPTCL had informed that Additional Chief Secretary had also intervened in this matter.

Further status would be updated in the SRPC meeting. LILO of Madhugiri-Bidadi at

Bidadi could not be a permanent arrangement though it was helping in utilizing Gooty-

Madhugiri line and loading in other lines had come down. MS, SRPC had clarified that as

per the MoM, it was a temporary reconfiguration and normal configuration had to be

restored by November 2016.

PGCIL had informed that in recent orders, Hon’ble CERC had directed that transmission

charges are to be paid by state utilities, in case downstream network is not ready. In the

recent Grid Code Amendment, the Commission has stated that there has to be an

Implementation Agreement between the respective state and PGCIL. Firm dates for

downstream evacuation system at Madhugiri and Yelahanka needs to be confirmed by

KPTCL for proper coordination.

SRPC deliberations

16.2.2 MD, KPTCL informed that Govt of Karnataka was seized of the issue. Recently,

Hon’ble Chief Minister had reviewed the matter and directed the concerned to deploy

police force, wherever required. With directives from the top, he stated that he was

hopeful that issues would be resolved at an early date.

16.2.3 PGCIL assured that they would also follow up the issue.

16.2.4 The following had been noted in earlier Meetings:

Downstream system by KPTCL was needed to be expedited to reap the benefit. LILO of

Sl.

No

Name of

Transmission

Element

Exe.

Agency

Sch.

CoD

Expected

date

Remarks

1 400 kV Gooty-

Tumkur D/C line

PGCIL June

2014 Commissioned

on 01.12.2015

Power flow of around 550

MW observed with

temporary reconfiguration

at Bidadi SS.

2 400/220 kV , 2 x

500 MVA, 63

MVAR Reactor

Tumkur S/S

PGCIL June

2014 Commissioned

on 01.12.2015

Downstream network not

available

3 400 kV Tumkur-

Yelahanka D/C line

PGCIL June

2014

Severe RoW problem. 400

kV Yelahanka S/S is

ready.


400 kV Nelamangala – Hoody along with 400 kV Tumkur – Yelahanka together could

help in further evacuation.

Constituents had expressed that LILO of 400 KV Nelamangala - Hoody at

Yelahanka and Tumkur - Yelahanka line (even without downstream at Yelahanka)

could help increase ATC and hence PGCIL may prioritize commissioning.

16.3 Upcoming inter-regional transmission schemes

16.3.1 The updated status is furnished below please:

S S.No. Transmission Element Remarks

a) 765 kV Wardha – Nizamabad-

Hyderabad D/C line

Original Schedule by May 2018.

PGCIL trying to complete the Wardha

- Nizamabad system by May 2017

29th

TCC update:

Wardha-Nizamabad section was being planned in Jan-Mar’2017. Nizamabad -

Hyderabad section was planned during Apr-Jun’ 2017. 1000 MW of LTA has been

granted to Telangana with the commissioning of this line. Within one and a half

years of investment approval the first system would be ready. Telangana has

confirmed that they would be bringing up the downstream system in the same

timeframe.

30th

SRPC update:

Director (O), PGCIL informed that they were making efforts to complete the entire

system of Wardha – Nizamabad-Hyderabad D/C line by June 2017. He stated

that they were anticipating around 2,800 MW through the 765 kV D/C with inter

connectivity of 400 kV lines.

Chairperson, SRPC observed that 2-3 SR states were tying DVC power through this

link.

Sl.

No

Name of

Transmission

Element

Exe.

Agency

Sch. CoD Expected

date

Remarks

Tumkur downstream

1 220 kV Tumkur –

Antharasana Halli

D/C

KPTCL Tenders for

the above

line had

been

placed on

18.03.15

and it

would take

18 months

for

completion

29th TCC

update :

November

2016

2 220 kV Tumkur

(400 kV) S/S – 220

kV Tumkur S/S

D/C

KPTCL 29th TCC

update :

November

2016

Yelahanka downstream

1 220 kV Yelahanka

(400/220 kV) S/S- 220

kV Yelahanka S/S D/C

Cable – 5 kM

KPTCL 6/7 months’

time (5 kM)

once the

award was

in place

Special cable (international

source) was required.

29th

TCC update: Tender

was likely to be finalized

shortly. It could take around

one year after PO.

2 400/220 kV Yelahanka

S/S – 220 kV BIAL S/S

D/C

KPTCL 29th

TCC update: KPTCL

informed would be dropped

keeping in view

Devanahalli SS

connectivity.


b) WR-SR 6000 MW HVDC Bipole Link

[Raigarh (Chhatisgarh) - Pugalur-

Trichur (TN/KER)]

Nov’ 2019

Raigarh HVDC terminal Award

Placed in Jun’16.(Pkg under court

case)

Award under progress for other

packages under Scheme-I

29th

TCC update: PGCIL informed that final hearing for the Package (Terminal) was scheduled for

26.08.2016.

c) 765 kV Angul - Srikakulam PS D/C

line

By August 2016, other associated

elements by Jun’2017-Dec’ 2019

29th

TCC update:

Angul-Srikakulam and Srikakulam- Vemagiri (PG TBCB) lines were ready. However

due to delay in delivery of terminal equipments at Vemagiri/Srikakulam for the

TBCB line from China, they were planning to charge the Srikakulam- Vemagiri (PG

TBCB) line at 400 kV level by directly connecting Gajuwaka-Nunna LILO at

Vemagiri and the issue was being referred to CEA. By November/December 2016,

the line could be charged at 765 kV level.

30th

SRPC update:

Director (O), PGCIL informed that Angul-Srikakulam line was getting charged at 765

kV level. Srikakulam- Vemagiri could not be charged at 765 KV due to delay in

terminal equipment. He suggested a proposal for temporary reconfiguration till the

complete system comes up by November/December 2016. In the meantime, they

were also trying to get the studies done through CEA to utilize the system with

anchoring of reactors at Vemagiri. If the same is useful to SR to get some additional

power, the configuration could be contemplated. SRPC agreed to the proposal of

temporary configuration subject to due ratification through studies.

d) Additional inter-Regional AC link for

import to Southern Region, i.e.,

Warora - Warangal - Hyderabad-

Kurnool 765 kV link

TBCB, PFCCL- BPC–Some

scope of work/ reactive

compensation modified and RfQ

modified accordingly.

RfP opened. Schedule was 40

months from the transfer of SPV

(around mid-2019).

36th

Meeting of Empowered

Committee scheduled for 26.07.16

29th

TCC update:

M/s Essel Infra has been selected through TBCB. SPV was transferred on

06.07.2016 with a schedule of 40 months.

e) System strengthening within SR for

transmitting power beyond Vemagiri

TBCB- RECTPCL-BPC–Some

scope of work/ reactive

compensation modified.

The project has been awarded to

PGCIL under TBCB, and was

expected by April, 2019.

29th

TCC update:

PGCIL informed that works have been awarded for all the packages and

under progress.


16.3.2 Updated status of upcoming inter regional scheme is furnished at Annexure-XV.

16.3.3 The following had been noted in earlier Meetings:

CMD, APTRANSCO & APGENCO had pointed out that considerable generation was

coming in Vemagiri area. With Angul-Srikakulam also injecting into Vemagiri,

system strengthening in SR beyond Vemagiri needs to be fast tracked.

16.3.4 As noted in 29th

SPRC Meeting a Joint Study Meeting was held at SRPC, Bengaluru

between 14th

-17th

March 2016 to study Short Term Planning & Long Term Planning Issues

(MoM copy at Annexure-XVI).

Short-term (temporary) connectivity between Vemagiri-II(PG) and KV Kota

(APTRANSCO) for increasing TTC of SR

The studies were carried out and it was found that after commissioning of the Wardha –

Hyderabad and Angul – Sirikakulam – Vemagiri 765 kV lines, the TTC for import of

power by Southern Region would increase from 6650 (at present) to 9600 MW.

However, this TTC reduces by 1700 MW upon commissioning of the scheme – “Removal

of constrains in 400 kV by extension at 400 kV Vemagiri substation”, which had been

planned for accommodating the KV Kota - Vemagiri at Vemagiri (AP). In these studies,

one unit (660 MW) of East Coast was also considered. To overcome the reduction in

TTC for import of power by Southern Region, system studies were carried out by

considering a short-term (temporary) connectivity between Vemagiri-II (PGCIL) and

KV Kota (APTRANSCO) as detailed above. It was observed that with this measure, the

TTC would increase to 11000 MW. Considering the benefit of this temporary

connectivity which would be needed till the commissioning of ISTS system beyond

Vemagiri, all the states requested APTRANSCO to consider this proposal positively.

APTRANSCO requested POWERGRID to send draft proposal for consideration and

approval of their boards. Draft proposal sent by POWERGRID is enclosed at Appendix-

5.0

Determination of TTC to import power into Southern Region

From the above study following is observed:

A. TTC is expected to increase to 7275 (6650 + 625 MW) with commissioning of 765

kV D/c Angul-Srikakulam-Vemagiri and LILO of Gajuwaka-Vijayawada at Vemagri-

II (PG). However, with commissioning of Kudgi generation, TTC is expected to

decrease which can be offset by increasing transfer limit on 765 kV D/C Raichur –

Solapur to 2750 MW.

B. After commissioning “Angul-Srikakulam-Vemagiri 765 kV D/c line along with

“Constraints in 400kV bay extensions at Vemagiri” the TTC value is getting reduced

to 5980 MW from present level of 6650 MW. However, after rearrangement as

proposed in 39th

Standing Committee meeting on Power System Planning in Southern

region held on 28th

& 29th

December, 2016, the TTC value is increased to about 7800

MW to 8100 MW depending on gas generation at Vemagiri(AP).

C. S1-S2 corridor capacity significantly improved with commissioning of 400kV Tumkur

(Vasanthanarasapura) – Dharmapuri D/C line

TCC deliberations

MS, SRPC had informed that to overcome the overloading of Vemagiri-I (AP)-

Vemagiri-II (PG), temporary rearrangement had been proposed .One circuit of


Vemagiri (PG)-Vemagiri (AP) was proposed to be connected with KV Kota while

other circuit connected to Vijayawada (PG). APTRANSCO’s acceptance had been

requested.

APTRANSCO had observed that with this temporary arrangement they were losing

part of their network and it may cause congestion at Vemagiri SS.

CTU had clarified that they were ensuring that TTC got increased and also AP’s

internal evacuation did not get affected.

It was agreed that a joint Meeting between AP and PGCIL would be held on 08th

September 2016 at Hyderabad to discuss this proposed rearrangement.

16.3.5 SRPC requested APTRANSCO to consider the proposal.

16.4 Status of various Associated Transmission Systems (ATS) of upcoming generators

16.4.1Common System Associated with NTPL / Costal Energen Private Ltd / Ind-Barath

Power Ltd

Updated status of associated links is furnished below:

Transmission Elements Line

Length

(ckm)

Impleme

nting

Agency

Sch

COD

Ant

COD/

Act

COD

Constraints/

Remarks

765 kV D/C Tuticorin

PS - Salem PS line

(Dharmapuri) (initially

charged at 400 kV)

735 PGCIL Dec'14 Oct’16

400 kV D/C Salem PS –

Salem line

120 PGCIL Sep’16 Line is ready

765 kV S/C Salem PS

(Dharmapuri) -

Madhugiri P S line

(initially charged at 400

kV)

244 PGCIL Dec'14 29th

TCC update:

Severe ROW

problems in

Karnataka. Critical.

Covered under

PRAGATI.

765/400 kV Salem PS

(initially charged at 400

kV)

PGCIL Dec’16 Supply civil works

and erection under

progress.

400 kV D/C Coastal

Energen – Tuticorin PS

54 Coastal

Energen

Sep’16 29th

TCC update:

CEA inspection

awaited and

charging of the line

expected within

two weeks.

TCC deliberations

PGCIL had requested for firm commitment from CEPL on completion of 400 kV D/C

Coastal Energen – Tuticorin PS. Hon’ble CERC in its Order dated 29.7.2016 on petition

No.127/TT/2014 had directed CEPL to pay the transmission charges for PGCIL assets till the

dedicated line is declared on CoD.

CEPL had requested for cooperation of PGCIL so that all other activities like SCADA

integration, inter-locking etc., are completed and the line is charged once CEA gives

clearance.


SRPC deliberations

MD, CEPL informed that they had executed the line in record six months time and

were awaiting CEA inspection.

16.4.2 Transmission system associated with IPPs (IL&FS) of Nagapattinam/Cuddalore Area

Updated status of associated links is furnished below please:

(i) Transmission system associated with IPPs of Nagapattinam/Cuddalore Area–

Package A

Transmission

elements

Line

Length

(ckm)

Imp. Agency Sch

COD

Ant.

COD

Constraints/

Remarks

Nagapattinam PS-

Salem New 765

kV D/C line

406 Powergrid

Nagapattinam-

Madhugiri

Transmission

Company

Limited

(PNMTCL)

(A subsidiary

of PGCIL)

Mar’

15 Sep’16

Salem New –

Madhugiri 765 kV

S/c line.

219 - Severe RoW issues

being faced in

Karnataka.

SRPC deliberations

ED, PGCIL informed that Nagapattinam PS – Salem New line was expected to be

commissioned by October 2016. Salem New (Dharmapuri) was connected to

Salem existing. With this, the connectivity to SR grid would get established. As

per TSA, both Nagapattinam PS-Salem New D/C and Salem New – Madhugiri S/C

line were required to be commissioned for declaring under COD. Since line

between Nagapattinam PS-Salem New D/C could get utilized, he suggested that

COD of this line be agreed. Salem New – Madhugiri S/C line was held up on

account of ROW issues in Karnataka.

Chairperson, SRPC observed that this may not help for additional inward power

transfer from WR but may help in outward power transfer.

SR constituents agreed for the suggestion of PGCIL, subject to ratification through

studies.

(ii)Transmission System Associated with Contingency plan for Evacuation of Power

from IL&FS (2x600MW)

The following was noted in the 29th

Meeting of SRPC:

It was noted that some stringing/ upgradation was pending within NLC Complex.

These works had been envisaged as a contingency evacuation for IL&FS.

It was noted that strengthening of Neyveli TS-II-Neyveli TS-I with HTLS conductor

was part of contingency plan for evacuation of IL & FS power as per CERC Order.

The transmission capability remains unchanged in view of the replacement not carried

out in NLC complex. To allow higher power, balance works were also to be

completed to comply with the intent of CERC Order.

In the sub Committee Meetings, PGCIL had informed that BOQ had been put to

Management for approval.


16.4.3 Evacuation of Power from HNPCL (1,040 MW) Power Plant

(i) Updated status of associated links under APTRANSCO’s scope is furnished below:

Transmission

Elements

Line

Length

(ckm)/M

VA cap.

Implementin

g Agency

Target

Date

Target

date

completi

on

Constraints/ Remarks

Startup Power Line

from M/s. HNPCL

TPP to 400/220 kV

Kalpakka SS

7 APTRANSCO Dec’16

400 kV TM D/C

Line from HNPCL -

Kamavarapukota S/S

(Lot-I, II & III)

200 APTRANSCO Jul ‘15 Dec’16 Purchase Order issued

on 03.11.2015. 24

Foundations completed

out of 256.

400 kV TM D/C Line

from Kamavarapukota

S/S - Vemagiri 400 kV

S/S

APTRANSCO Dec’16 All the foundations, tower

erections and stringing

works are completed.

400 kV TM D/C

Line from

Kamavarapukota S/S

- 400 kV Chinna

Korukondi S/S

212 APTRANSCO Sept. ‘15 Dec’16 Works under progress.

Kamavarapukota

Substation

2x315

APTRANSCO Mar ‘16 Dec’16 All works completed

for 1 No. of 400 KV

Bay on 07.02.2014

2 Nos. of 400 KV

Bay Extensions at

existing 400/220 KV

Kalpaka S/S of

HNPCL

APTRANSCO Dec’16

(ii) Updated status of associated links under TSTRANSCO’s scope is furnished below:

Transmission Elements Line

Length

(ckm)/M

VA cap.

Implement

ing

Agency

Target

Date

Target

date

completio

n

Constraints/

Remarks

400 kV TM D/C Line

from Chinna Korukondi -

400 kV Suryapet S/S

212 TSTRANS

CO

Works completed.

Suryapet S/S -

Nandiwanaparthi S/S 400

kV Quad D/C Line

240 TSTRANS

CO

Mar’15 By Sep 16 Works awarded in

Sep-13. Stringing

completed. OPGW

4.682 kM under

progress.

400 kV Quad D/C Line

from Nandiwanaparthi

S/S - Shankarapally S/S

222 TSTRANS

CO

Mar’15 By Dec 16 Tower erection: 300

out of 315 completed.

Stringing: 60.77 km

out of 111 km

completed/


Suryapet Substation

400/230/132 & 2 Nos. of

400 KV Bay Extensions

at 400 KV Shankarapalli

S/S

2x315

TSTRANS

CO

All works completed.

Suryapet SS charged

on 30.03.2016

through LILO of 400

kV VTS-Malkaram

Ckt 1

16.4.4 Transmission system of KPTCL for evacuation of power from Yermarus TPS (2x800

MW)

Updated status of associated links is furnished below:

Transmission elements Imp.

Agency

Line

Length

(ckm)/

MVA

cap.

Sch. COD Constraints/ Remarks

Bellary 400 kV PS near

‘BTPS’

JSWEL

(KPTCL)

Nov’16 (As

informed by

JSWEL)

Works under progress

Gulbarga 400/220 kV

substation

KPTCL 2x500 Land acquired. Geo tech

survey work will be

awarded within a week. Bill

of Materials prepared and

within 15 days estimate will

be prepared.

Yermarus TPS - Gulbarga

400 kV D/C line (QM)

KPTCL Detailed survey completed.

Estimate is being prepared.

400 kV SS at

Chikkanayakanahalli (C.N

Halli) near “Loop in Loop

Out” (LILO) point on the

Nelamangala – Talaguppa

400 kV lines to Hassan.

KPTCL 2x500

MVA

In 39th SCPSPSR

a step down SS

with 2 x 500

MVA, 400/220

kV ICTs was

agreed.

Land Acquisition is under

progress. The proposal is

submitted from AC Tiptur

to DC Tumkur on

28.03.2016

LILO of both the circuits of


400 kV lines to the proposed

pooling station near CN

Halli.

KPTCL Linked with CN Hally

station

Termination of 400 kV D/C

line feeding 400/220 KV

station at Hassan from


line at CN Halli 400 kV

pooling station.

KPTCL After CN Halli land

identification, survey would

be taken up.

Yermarus TPS - Bellary

Pooling Station 400 kV D/C

line with quad moose

conductor

KPTCL 300

(400 kV

MC Line

(5.138

Kms) and

400 kV

DC line

(137.355

Km)

totally

Expected by

Mar’17 29

th TCC update:

Total Locations : 399 Nos

Excavated : 245/399

Stubs concreted : 242/399

Towers erected: 109/399

Stringing : Nil


for a

route

length of

142.493

Kms)

Bellary Pooling Station -

C.N.Hally 400 kV D/C line

with quad moose conductor

KPTCL 360 Survey using

MST conducted

and reports

submitted to

zonal office vide

ltr no:1682-83

Dt:30.06.15 and

the same is

submitted for

approval to

CEE(P&C) vide

ltr.no.2504-06 dt

7.7.2015

29th

TCC update:

Part of the work from

Rampura-Jagalur 65 kM

had been awarded.

Bellary PS to Madhugiri line

(765/400kV V.N.pura

substation (PGCIL)

a) Madhugiri to Rampura

limits): 400kV DC line

with Quad Moose ACSR

(188.74 Kms)

b) Bellary pooling Stn 400

kV to Rampura limits

(KelaginaKanavi): (43.018

Kms)

KPTCL

Under

Executio

n by

KECIL

By

Kalpataru

PTL

380

22-Dec-16

29th TCC update:

Nov’16

24-Apr-17

29th TCC update:

Nov’16

29th

TCC update:

Out of 512 locations, 484

excavations over, 481 stubs

concreted, 469 towers

erected &159.2/188.74 km

stringing completed.

29th

TCC update:

Out of 125 locations, 119

excavations over, 119 stubs

concreted, 97 towers

erected & 3.2 km stringing

completed.

Bellary TPS – Bellary

Pooling Station 400 kV D/C

line with quad moose

conductor

KPTCL 10 In 39th SCPSPSR it was

agreed to drop the proposal.

Dropped

De-link 400 kV S/C line

running between RTPS-

BTPS-JSW-Guttur with

JSW Bus

KPTCL

Nov’16 Agreed in 39th SCPSPSR

400 kV M/C line from

JSW to BPS is under

progress, once this is

commissioned the link

between JSW & BPS will

be delinked.

JSW TPS – Bellary Pooling

Station 400 kV D/C line

with quad moose conductor

KPTCL Jul’16 (As

informed by

JSWEL)

Only after all other

Transmission Elements

under Stage I are

commissioned.

KPTCL/JSW to discuss to

take up this work as

dedicated transmission line

by the generator.

Works to be carried by

JSW.


16.4.4.1 The following had been noted in earlier Meetings:

KPTCL had informed that 400 kV Tumkur-Bellary PS D/C line had been awarded

and was expected to come along with Bellary PS with schedule of one and half years

i.e March 2017. They were trying to compress construction to one year against

schedule of one and half year. Land identification was completed in C N Hally but

KPTCL was targeting this system in the second stage. CEA had been requested to

allow 500 MW of evacuation from Yermarus coupled with drawal at Tumkur. It

was assured that 500 MW of injection from Yermarus would not be at the cost of

regional ATC.

SRLDC had pointed out that 400 KV Hiriyur - Nelamangala lines were getting

overloaded and ATS was not ready for Bellary Unit-III and Yermarus TPS.

Generation from the Complex maybe required to be regulated by Karnataka SLDC.

SRLDC had stated that only 2,090 MW of evacuation would be possible from

Raichur TPS, Yermarus TPS & Bellary TPS. KPTCL pointed out that with the

present network about 2,600 MW of power was already getting evacuated. SRLDC

confirmed that 400 kV N/W had only been considered in the studies.

16.4.4.2 In the Joint Study Meeting held at SRPC; Bengaluru between 14th

-17th March 2016 to study

Short Term Planning & Long Term Planning Issues (Refer Annexure-XVI) the following

had been concluded:

So, based on studies, it was decided that Karnataka may commission first unit of

Yeramarus TPS either by reducing about 700 MW at Raichur TPS or by drawing about

500 MW at Madhugiri. Considering that a March/early April is low wind season,

Karnataka should attempt to achieve COD within March/ early April. This discussion

is exclusively for the purpose of COD. Regarding scheduling of YTPS power,

KPTCL/Karnataka would coordinate with SRLDC. The LTA and MTOA in ISTS would

have priority and the margins if any after meeting these LTA/MTOA commitments may

be considered by SRLDC.

TCC deliberations

KPTCL had informed that line from Yeramarus to Bellary PS may not be immediately

required for evacuation of Yeramarus power. Around 1,100 MW of JSWEL power

which was getting evacuated through their lines would now be using the line through

Bellary PS to Madhugiri. It had been acknowledged by CEA/CTU that around 600

MW could be injected at Yeramarus in case KPTCL ensures 500 MW drawal at

Madhugiri. From November 2016, they would be able to pump Yeramarus power with

normal/temporary reconfiguration at Bidadi and downstream system at Madhugiri.

It was noted that injection at Yeramarus needed to be coordinated with SRLDC in line

with studies (CEA’s MoM dated 03.05.2016).

16.4.4.3 SRPC noted the above.

Additional JSW TPS –

Bellary Pooling Station 400

kV D/C line with quad

moose conductor

Agreed in 39th SCPSPSR

400 kV BTPS-Guttur D/C

line (QM)

Agreed in 39th SCPSPSR


16.4.5 Transmission System required for evacuation of power from Kudgi TPS (3x800 MW

in Phase-I) of NTPC Limited

The updated status is furnished below:

The following had been noted in earlier Meetings:

Three 220 kV D/C lines were planned evacuation lines at 220 kV level to Vajramatti,

Basavana Bagewadi and Bijapur. The Vajramatti line had just been awarded and could

take about 1 year. There were some RoW issues in that area. Construction from B

Bagewadi and Bijapur ends had already commenced and about 50 % of the lines are

completed

16.4.6 Transmission System for evacuation of power from Singareni Collieries

Generating Project (2 x 600 MW)

The following is the status update:

Transmission

Elements

Imp. Agency Scheduled

CoD

Revised

Target

Date


400 kV Kudgi TPS –

Kudgi (PG) 2xD/C

Line

M/s Kudgi

Transmission

Limited (L&T

Infrastructure

Development

Projects Ltd.)

Feb-15 2015-16

One D/C line Kudgi TPS –Kudgi

(PG) declared on deemed CoD

from 04.08.15.

Kudgi (PG)-Tumkur

765 kV D/C Line

Dec - 15 Line is ready

Tumkur - Bidadi 400

kV D/C (quad) Line

Line is charged through temporary

reconfiguration

400/220 kV ICT 2 at

NTPC Kudgi

Switchyard

NTPC Aug’16

400 kV Bus Reactor -2 NTPC Aug’ 16 Under Progress

Transmission

elements

Length

(ckm/MVA

capacity)

Imp. Agency

Sched

uled

CoD

Target

date of

Completi

on

Constraints/

Remarks

1. 400 kV Singareni- Gajwel in two parts

a) 400 kV Jaipur

(Singareni) -

Rangampet D/C

(Quad)

149.636

TSTRANSCO

Comp

leted

Charged on

Nov 15

Reactor also

commissioned

b) 400 kV

Rangampet- Gajwel

D/C (Quad)

174.852

TSTRANSCO

Comp

leted

2. 400 kV Singareni-Nirmal in two parts

a) STPP, Jaipur -

Jagityal

142 TSTRANSCO Mar’ 17 Works Awarded on

Nov’15.

b) Jagityal - Nirmal 156 TSTRANSCO Feb

17

Dec’ 16 Works Awarded on

Oct’15.


16.4.7 Transmission System for Rayalaseema TPS (600 MW)


16.5 Status of upcoming links having impact on S1-S2

Following is the updated status:

Sl.

No.

Transmission

Element Schedule

Expected

Commissioni

ng Date

Remarks

1 400 kV

Somanahalli-

Dharmapuri PS

Jun’15 Severe RoW problems being faced in

Karnataka. Critical issues related

compensation not yet resolved.

2

400 kV

Mangalore

(UPCL ) -

Kasargode-

Kozhikode

In the 39th

SCPSPSR, it was noted that

the process of implementation of 400

kV UPCL-Kasargode- Kozhikode line

in TBCB or regulated tariff in

compressed time schedule will be

initiated as applicable.

16.5.1 In earlier Meetings the following had been noted:

PGCIL had informed that regarding 400 kV Dharmapuri - Somanahalli line, DC (Urban)

had ordered compensation of 100 % of fair value for tower footing and 55 % for line

corridor. With this, cost of 30 kM line was working out to as high as Rs 90 crore. SR-II,

PGCIL had informed that ROW issues for 400 kV Somanahalli - Dharmapuri PS were yet

Transmission

elements

Length

(ckm/M

VA

capacity)

Imp. Agency

Scheduled

CoD

Target

date of

Complet

ion


RTPP (Stage - IV) -

Chittoor TM D/C

Line

(a). RTPP - Pedda

Jamgam Palli

(P.J.Palli)

(b). P.J. Palli-

Chittoor

(c) 220 kV

Muddanur(RTPP)-

Chinakampally 3 &

4

432

120

APTRANSCO

Dec’ 16

Dec’ 16

Foundations: 291 out

of 321 completed.

Tower erection: 250

completed.

Stringing of 49.049 kM

completed.

Foundations: 309 out

of 321 completed.

Tower erection: 220

completed. Stringing of

38.868 kM completed.

Commissioned on

16.06.2016

400/220 kV,

Kalikiri S/S

2 x 315

MVA

APTRANSCO Feb’17 PO is placed in Nov-

15.

LILO of both

circuits of

Rayalseema IV-

Chittoor 400 kV

D/C line| at Kalikiri

APTRANSCO


to be resolved and it would take around two months to complete the work once the ROW

issues are resolved.

16.6 Critical Intra-regional transmission elements


Sl.

No. Transmission Element Expected CoD Remarks

1 765 kV Salem- Tumkur

By PGCIL

Through TBCB

-

-

Severe RoW being faced in

Karnataka. Critical.

29th

TCC update:

TBCB line is progressing as in

different corridor

2 400 kV Edamon-Kochi Jun’17 Govt. of Kerala issued revised

G.O in Jan’2015 with

enhanced compensation.

Being monitored under

PRAGATI

16.6.1 The following was noted in earlier Meetings:

SR-II, PGCIL had informed that regarding 400 kV Edamon - Kochi there was not

much progress. KSEBL had informed that the survey was being carried out from both

the ends and the ROW issues would be settled by Kerala Govt. The line was being

monitored under ‘PRAGATI’ (Pro Active Governance And Timely Implementation).

Regarding 765 kV Tumkur - Dharmapuri, PGCIL had informed that the line was

crossing four districts in Karnataka (Tumkur, Kolar, Chikkaballapur & Bengaluru

Rural) and RoW issues were being addressed in a stepwise manner.

TCC deliberations

PGCIL had informed that they had recommenced survey works but there was lot of

resistance and Govt. of Kerala support was required to move forward.

KSEBL had informed that once the ROW affected people are identified they would

pay the compensation.

SRPC deliberations

CMD, KSEBL informed that they were giving top priority for completion of this line.

They were hopeful of getting the entire ROW in possession by December 2016.

16.7 400 kV Trichur-Kozhikode line (Madakkathara-Areakode)

In the 39th

SCPSPSR it had been noted that Madakkathara - Areakode (Kozhikode) -

Kasaragode 400 kV D/C link may be taken up by KSEBL.

16.8 Requirement of additional ICT at 400 kV sub-station at Kozhikode

16.8.1 In the 39th

SCPSPSR, 1 x 500 MVA ICT at Areakode (Kozhikode) substation was

agreed.

16.8.2 KSEBL vide letter dated 20.02.2016 had stated that PGCIL may take necessary steps to

provide additional ICT at 400 kV substation at Kozhikode temporarily by using spare 315

MVA ICT till 500 MVA ICT is available. The following was deliberated in the SRPC /

TCC meetings:


TANTRANSCO had informed that they would return back the spare ICT of PGCIL

being utilized at Sriperumbudur as their ICT was ready for commissioning.

PGCIL had stated that they would consider shifting either of the two ICTs and most

likely the ICT from Tamil Nadu would be feasible. They would initiate the bay

works also.

TCC deliberations

KSEBL had informed that PGCIL had given an estimate of Rs.3 Crores for which

approval was required. The transformer was required by December 2016. They would

intimate their decision within two weeks.

SR-II, PGCIL had stated that consent needs to be communicated at the earliest since there

were time schedule indicated for shifting the ICT. Transformer from some other package

may have to be diverted.

SRPC deliberations

16.8.3 CMD, KSEBL said that they would convey their decision within a week’s time. PGCIL

was quite proactive. It was felt that in case they had taken up tendering activities,

wasteful expenses of temporary usage of 315 MVA ICT could have been avoided.

16.8.4 GM, SR-II, PGCIL informed that 500 MVA Transformer approved in the Standing

Committee was under NIT with a schedule of one year. Once the tender is awarded, the

commissioning could be expedited or even diversion from other package could be

contemplated. He clarified that as discussed in the TCC, the tariff component had not

been included in their proposal.

16.8.5 It was noted that PGCIL had taken up the work for the 3rd

ICT expeditiously, soon after

approval in the Sanding Committee on Power System Planning.

16.9 NLDC vide letter dated 21st July 2016 (available in NLDC website) had highlighted

following transmission constraints in their Operational Feedback for the quarter April-

June 2016 in respect of SR:

Transmission Line constraints:

400 kV Nellore Pooling Station -Nellore D/C line

400 kV Gooty-Nelamangala line & 400kV Gooty- Somanahalli line

400 kV Udumalpet- Palakkad D/C line

400 kV Hiriyur-Nelamangala D/C line

220 kV Bangalore Metro Network

Overloading of 220 kV Shoolagiri-Hosur(TN)-Yerrandahalli-Somanahalli S/C line

220 kV Sharavathy-Shimoga lines (4 nos) and 220 kV Sharavathy-Talaguppa D/C

Constraints in Coastal AP

Constraints for Rayalaseema TPS Generation Evacuation

Transformation Capacity at 400/220 kV Kozhikode SS

Constraints in Chennai 230 kV System

Overloaded 220 kV Lines in Tamil Nadu

Constraints in 230 kV Evacuation lines of MTPS and Kundah complex

Constraint in Evacuation of Coastal Energen

Constraints in wind Evacuation


ICT Constraints

400/220 kV 2 x 315 MVA ICTs at Gazuwaka

400/220 kV 2 x 315 MVA ICTs at Vemagiri

400/220 kV 2 x 500 MVA ICTs at Nelamangala

400/220 kV 2 x 500 MVA ICTs at Somanahalli

400/220 kV 2 x 500 MVA ICTs at Hoody

400/220 kV 2 x 315 MVA ICTs at Mysore

400/230 kV 2 x 315 MVA ICTs at Pugalur

400/230 kV 2 x 315 MVA ICTs at Trichy

SRPC noted the above and requested respective entities to kindly identify and implement

short term and long term measures to overcome these constraints.

17. UPCOMING RENEWABLE PROJECTS AND THEIR INTEGRATION WITH

TRANSMISSION NETWORK

17.1 Status update of the upcoming schemes in Southern Region for renewable as given below

is furnished at Annexure-XVII.

Uravakonda Wind – AP

Solar Power Park at Ghani/Panyam (1000 MW )Phase-I Works – AP

1000 MW Wind Power at Aspiri- AP

1500 MW NP Kunta Solar Project- AP

TN – 1000 MW Solar Park to be developed by M/S Adani at Kamuthi

Kamuthi Solar (Max 100 MW injection)- TN

Samugarengapuram Wind (1800 MW existing + 300 MW) - TN

Green Energy Corridors:- Inter State Transmission Scheme (ISTS) - Part - A

LTA to Wind Generators in Tirunelveli Area - Tamil Nadu

Connectivity to Wind Generators in Coimbatore Area -Tamil Nadu

Connectivity/LTA to Wind Generators -Tamil Nadu (600 MW progressively from

March 2017)

Connectivity to Wind Generators in Anantpur/Kurnool Area – AP

Renewables (KfW) Hindupur - AP

Renewables (KfW) Jammalamadugu - AP

Renewables (KfW) Uravakonda - AP

Renewables (KfW) 220 kV Interconnectivities - AP

Renewables (KfW) 132 kV Interconnectivities – AP

Renewables (KfW) Intra-state (modified scheme)- Karnataka

Renewables (KfW) Phase I – Tamil Nadu

Renewables (KfW) Phase II – Tamil Nadu

17.2 It was observed that timely progress on the above scheme needs to be communicated to

SRPC Secretariat since it was a critical issue being monitored by various bodies.

17.3 Transmission System associated for Tumkur Ultra Mega Solar Park (2000 MW)

Transmission

Elements

Line Length

(ckm)/ MVA

Capacity

Implem

enting

Agency

Sch

COD

Ant

COD/

Act COD

Constraints/

Remarks

Phase-I : Transmission system for Tumkur Ultra Mega Solar Park (1000 MW) April 2017

400/220 KV Tumkur

PS

Bus Reactor

3 x 500 MVA

1 x 125

MVAR

L & T Oct’18 Award placed in Apr’16.

Expediting to complete

along with Generation

Commissioning.


LILO of 400kV Gooty

– Tumkur

(Vasantnarsapur) D/C

at Tumkur (Pavagada)

PS

3 PGCIL Oct-18 Award placed in

Jun’16. Expediting to

complete along with

Generation

Commissioning.

400 kV Tumkur P S -

Hiriyur D/C

218 PGCIL Dec’18 For 400kV Tumkur –

Mysore line section

routed via Hiryur S/s.

Award placed in

Jun’16. LILO of 400kV

Bellary Pool –

Tumkur

(Vasantnarsapur) D/C

(Quad)(both

circuits)[KPTCL line]

at Tumkur (Pavagada)

Pooling station*

107 PGCIL Dec’17 *KPTCL would

complete Bellary

pooling station –

Tumkur

(Vasantnarsapur) line

D/c (Quad) by

December- 2016.

Award placed in

Jun’16. 4 nos. sub pooling

stations (4x250 MW,

66/220kV), 4 no. of

interconnecting 220

kV D/C lines

KSPDC

L

Phase-II : Transmission system for Tumkur Ultra Mega Solar Park (1000 MW) Sep 2017

Augmentation of

400/220KV Tumkur

PS

2nd Bus Reactor

2 x 500 MVA

1 x 125

MVAR

Hiriyur–Mysore 400

kV D/C line

Switchable Line

Reactor at Mysore

190

1 x 80

MVAR

Tumkur PS – Mysore

– De LILOed at

Hiriyur

400 kV Tumkur PS-

Devanhally (KPTCL)

D/C (Quad)

125 KPTCL would

complete

establishment of

400/220 kV substation

at Devanahally

including inter-linking

400 kV and 220 kV

lines before Phase-II

at Ultra Mega Solar

Power Park. Third 400/220

kVMVA transformer

at Tumkur

(Vasantnarsapur)

1 x 500 MVA

4 nos. sub pooling

stations (4x250 MW,

66/220kV), 4 no. of

interconnecting 220

kV D/C lines

KSPDC

L


TCC deliberations

SR-II, PGCIL had informed that they were focusing on completing the Pavagada SS

and LILO of Gooty-Tumkur line at Pavagada SS. As per Investment Approval

scheduled date of LILO of Gooty-Tumkur at Pavagada and Pavagada SS was Oct

2018 but PGCIL was expediting to advance the commissioning.

It was noted that Tumkur Ultra Mega Solar Park Phase-I (1,000 MW) was expected

by April 2017.


18. NEW PROJECTS OF NTPC, NLC, NPCIL, JOINT VENTURE & UMPP

18.1 Krishnapatnam UMPP (6x660 MW)

18.1.1 The following had been noted in earlier Meetings of SRPC:

The matter is sub-judice in High Court of Delhi.

CMD, APTRANSCO & APGENCO had informed that APSPDCL was the lead

procurer. Over a period of time this project was non-starter and it was unlikely to start

in future also. Except land leveling no work had been undertaken. Last week, CAPL

made presentation to the procurers for exit from the project. Hon’ble High Court had

posted the case on 22nd

April 2016 and project was being constantly monitored. Even

in the last procurer’s meeting, CAPL was suggested to come out with a reasonable

proposal.

Progress of Krishnapatnam UMPP had been uploaded in MoP website with the

observation ‘The project was handed over to Reliance Power Ltd. on 29.01.2008. The

developer has stopped work at site, citing new regulation of old pricing in Indonesia.

Lead Procurer namely Andhra Pradesh South Power Distribution Company

(APSPDCL) has issued termination notice to Coastal Andhra Power Ltd (CAPL). The

case is subjudice in division bench, Delhi High Court.’

18.1.2 In the SRPC Meeting it was noted that there was no update on this issue.

18.2 Cheyyur UMPP (4,000MW)

18.2.1 In the 27th

TCC Meeting, CTU had informed that this project had been identified under

‘Plug and Play Mode’ and new bids would be invited during 2015-16.

18.2.2 The following was noted in earlier TCC meeting:

The progress of Cheyyur UMPP has been uploaded in MoP website with the observation

‘The site at Cheyyur in Kanchipuram District in Tamil Nadu has been identified along with

captive port at Panaiyur village. Request for Qualification (RfQ) and Request for Proposal

(RfP) issued in 2013 were withdrawn. Fresh RfQ and RfP are to be issued after the

finalization of Standard Bidding Documents.’

TCC deliberations

TANGEDCO had informed that land acquisition is over. In case the bidding process is

getting delayed they were willing to take the project by themselves.



18.3 Schedule of synchronizing/commissioning of the new projects of NTPC, NLC, NPCIL,

BHAVINI & UMPP is furnished below:

Station Unit

InstalledC

apacity

MW

Scheduled date of

synchronizing /

commissioning

Remarks

NTPC

Kudgi TPS Stage-

I

I,I,

III

3 x 800=

2400 Unit-I Synchronization by

Oct’16. CoD by

Mar’17.

Unit-II

Synchronization by

Mar’17. CoD by

Sep’17

Unit–III Synchronization by

Jun’17.CoD by Dec’17

Telangana STPP

Phase I

2 x 800 U-I CoD May 2020

U-2 CoD Nov 2020

Pudimadaka AP 4 x 1000 52 Months from Zero

Date

85% share to AP.

Zero date yet to be finalized.

AP requested NTPC to firm up

the zero date at the earliest.

AP informed evacuation

system would be developed by

PGCIL

29th TCC: NTPC informed that the plant was envisaged with imported coal.

MoP has given directives for utilizing domestic coal. NTPC has taken up the

issue with GoAP. Principal Secretary, GoAP has written to MoC for allocation

of mines with higher grade domestic coal. Zero Date has not been firmed as

specifications are under deliberation between AP authorities.

NLC

New Thermal

Power Project

I 500 October 2017 NLC expressed concern that the

evacuation system needs to be in

place. CEA had given its

recommendation vide letter dated

10.02.2016.

CTU informed that the line to

Araliyur could only be taken up after

getting authorization from MoP.

Araliyur S/S was being developed by

TANTRASCO and was expected by

June 2018

II 500 April 2018

29th TCC: CTU informed that for evacuation LILO of Neyveli - Puducherry

and 400 kV D/C to Araliyur lines are planned. NLC had applied for LTA of

340 MW which could be managed with the LILO of Neyveli – Puducherry.

Balance 600 MW would be catered by 230 kV system of TANTRANSCO.

Sirkali TPP I, II,

III

3 x 660 From GoI approval

Unit I – 52 months

Unit II – 58 months

Unit-III – 64 months

PPA has been signed. Fuel

imported coal. Approval of

Feasibility Report was awaited

from NLC Board.

29th TCC: NLC informed that the capacity has been changed to 3 x 800 MW

and suggested that the project monitoring could be dropped from agenda and


could be taken up once the Project is firmed up. TCC agreed to drop the project

monitoring.

NPCIL

Kudankulam St-I II 1000 Unit-II:

Synchronization by

August/Sept. 2016

COD by Dec 2016

KKNPP informed that they

would approach Hon’ble CERC

for extension of availing start

up power. Extension available

upto 31.07.2016.

29th

TCC: NPCIL informed that all clearances from AERB had been received.

Unit was started and turbine was rolled and due to some minor problem in

turbine secondary system and the unit was under shutdown. Unit-II would be

synchronized in 3-4 days. COD was anticipated within 6 months.

SRPC deliberations

NPCIL informed that at 50% power level some physics experiments are to be

conducted. The results of the experiments are to be vetted by AERB. The same

experiments and the process has to be followed for 75% and 90%. This process

takes around 2-3 months, hopefully it would be expedited based on experience

of Unit-I. They were anticipating COD in early Dec 2016.

SRLDC pointed out that this power would be scheduled to Tamil Nadu and

extra backing down may be necessary. MS, SRPC clarified that the power

would be scheduled to all the beneficiaries.

Chairperson, SRPC stated that Unit-II commissioning by Dec 2016 would be

beneficial to all as the loads pickup in January.

Director (T), KPTCL pointed out that nuclear power needs to be supported and

absorbed unlike the deliberations in the TCC.

BHAVINI

Kalpakkam

(PFBR)

I 500 Synchronization by

March 2017

COD by Sep 2017

UMPP

Krishnapatnam 3960

(6 x 660)

APEPDCL and PCKL had

taken steps with their legal

counsel to expedite the hearing

before Honorable High Court

of Delhi

Cheyyur 4000 New bids would be called

19. NEW PROJECTS OF STATE SECTOR & IPP

19.1 Updated status of new projects of State sector is furnished below:

Sl

No

Name of project Located

in

Capacity in

MW

Commissioning Schedule

/Remarks

1 Rayalaseema TPS ST-IV AP 1 x 600 CoD by Dec’ 2016

2 Dr. NTTPS, Vijayawada AP 1 x 800

3 Polaki AP 4000

4 Bellary TPS U-3 KAR 1 x 700 Achieved full load on 01.03.2016.

COD by 2016-17

5 Yermarus TPS KAR 2 x 800 Unit-I: FL achieved on 29.03.2016.

Unit II: COD by 2016-17


6 Kakatiya TPP St.-II Telangana 1 x 600 COD from 24.03.2016.

Confirmation yet to be received

from Commercial Wing

7 Singareni Telangana 2 x 600 Unit I: CoD by 2016-17

Unit II: CoD by 2016-17

8 Manuguru PPP Telangana 4 x 270

9 Kothagudem TPS Phase

VII

Telangana 1 x 800

10 Damaracherla Telangana 2 x 600 +

4 x 800

19.2 Updated status of new projects of IPPs is furnished below:

Sl

No.

Name of project Located

in

Capacit

y in

MW

Commissioning Schedule /Remarks

1 Meenakshi PH-II AP 1 x 700 2017-18

Untied: 640 MW

2 East Coast Energy

Thermal

AP 2 x 660

2016-17

AP : 300 MW

3 Thermal Powertech

(TPCIL) Unit-III

AP 1 x 660

CoD : 2016-17

4 SGPL (NCC)

Krishnapatnam

AP 2 x 660

Unit I : CoD by 2016-17

Unit II: Syn. by September 2016

AP: 500 MW (firmed up PPA to be

signed).

5 Hinduja NPCL,Vizag AP 2 x 520 COD of Unit 1: 11.01.2016

COD of Unit 2: 03.07.2016

6 Coastal Energen Unit-II TN 1 x 600 COD on 15.1.2016

7 IL&FS

(ITPCL) Unit-II

TN 1 x 600 First synchronized to grid on

30.04.2016. COD from 30.04.2016

20. EMERGENCY RESTORATION SYSTEM (ERS)

20.1 Requirement of ERS had been outlined in MoP letter dated 05.12.2014. CEA vide letter

dt.18.04.2016 (Annexure-XVIII) had sought updated status on the ERS which was

communicated to the States. Status update is given below:

Transmission

Utility

Requirement

as per MoP

Existing Status/Remarks

APTRANSCO 3 Nos. ERS I – Placed at Nellore.

ERS II – received on 25.04.2016 and

would be kept at Vizag.

29th

TCC update :

APTRANSCO informed that they were

planning to drop ERS-III.

It was clarified that the requirement had

been given by MoP, and APTRANSCO

should go for the third ERS.

TSTRANSCO 1 No. 29th

TCC update : TSTRANSCO informed that tenders

had been called, and ERS would come

up in 5- 6 months time.


KPTCL 2 No. 2 Nos.

KSEBL 1 No. 29th

TCC update : Tenders would be initiated in a

month’s time.

TANTRANSCO 2 Nos 29th

TCC update : Administrative approval had been

received and tenders would be floated.

PED Nil

PGCIL 4 Nos. ( 2

Nos.

additional)

2 Nos (SR

I & SR II

was having

1 No. each)

29th

TCC update : Order had been placed. Would be kept at

Vizag and Chennai. Expected by June

2017. One would be 765 kV ERS.

TCC deliberations

CEA had informed that it has been decided that all Transmission Licensees (irrespective

of ownership) would maintain ERS as mandated in CEA Regulations. All ERS locations

should be available at RLDC website to ensure availability of ERS at particular location in

a timely manner.

TANTRANSCO had enquired about status of ERS S/S which had been approved earlier

by SRPC. PGCIL had informed that that they had taken up tendering but there was no

response, ERS S/S has been dropped. ERS SS was available upto 220 kV, but 400 kV

ERS was too bulky and transportation was a problem.

TCC had noted that PGCIL should have furnished the updates in this regard since ERS

S/S was approved in SRPC after a lot of deliberations.

SRPC deliberations

20.2 Director (G & TM), APTRANSCO observed that PGCIL is having one set of ERS at

Vijayawada and Vizag. In addition APTRANSCO was having two ERS one at Nellore

and other at Vizag and hence third ERS may not be required.

20.3 Director (GM), CEA stated that a practical problem was faced in the capital city of Delhi,

when the Transmission Licensee not owning ERS was depending only on PGCIL. PGCIL

may not be able to come to the rescue every time. As per National Disaster Management

System, one should be able to deploy these ERS within two days. Even single line owners

(TBCB) had been directed to have ERS and there was an Order of CERC in this regard

also.

20.4 Chairperson, SRPC observed that Andhra Pradesh and Tamil Nadu need to have higher

number of ERS since their coastal belt was more prone to cyclones. He added that during

floods in Chennai, PGCIL ERS had come in very handy.

20.5 Director (G & TM), APTRANSCO said that they would discuss the matter with their

Management.

20.6 On a query about ERS SS, Director (O), PGCIL informed that the cost was exorbitantly

high (around Rs 400 crores). They were still trying for a smaller transformer of 100/160

MVA with minimum breakers instead of 315/500 MVA.

20.7 Chairperson, SRPC stated that as per Disaster Management plan, ERS SS may also be

required. This was basically required to run some essential services.


20.8 Director (O), PGCIL said that smaller capacity transformers were still under

consideration.

20.9 Chairperson, SRPC suggested that PGCIL should go for smaller capacity transformers to

meet the objectives.

21. PROGRESS OF BUS/LINE REACTORS TO BE COMMISSIONED IN SR

21.1 Status of implementation of Bus / Line Reactors / Dynamic Compensation approved in the

Standing Committee / SRPC pending for commissioning by the SR constituents is

furnished below:

Entity Bus Name Status REMARKS

KPTCL

Hoody Received at site by August

2016

As identified in the 22nd

Standing

Committee Meeting on Power System

Planning of SR and as approved in the

4th SRPC Meeting held on 7

thJune

2007

Nelamangala By December 2016

Entity Bus Name Capacity in

MVAR

Approved

in Type Remarks

PGCIL

Vijayawada 2x125 20

th SRPC/

34th SC

Bus

Would be

Commissioned

progressively from

Sep 2016.

Vijaywada reactor

expected by July

2016.

Nagarjuna Sagar 125 21

st SRPC/

34th

SC Bus

Narendra 125 21

st SRPC/

34th SC

Bus

Hyderabad 125 21st SRPC

Gooty 125 22

nd SRPC /

36th SC

Bus

Hassan 125

36th SC

Bus

Khammam 125 Bus

Kudgi PG 125 Bus

Trivandrum 125 Bus

Nellore (Existing) 125 Bus

Yelahanka 2x63 Bus

Nellore PS on

NPS-Gooty Line

2 x 63 (37th

SC) Line

Kudgi PG–

Tumkur D/C at

each end

4 x 63 Line

Cuddapah 50 to 125 39th

SC

Thiruvalam 765

kV 2 x 240 39

th SC

APTRANSCO

Vemagiri 80 21

st SRPC/

34th

SC Bus

Commissioned in

May 2015

Vemagiri 125

Bus PO has been

placed in the Kurnool 125 Bus


21.2 Subsequently, Chairperson, SRPC vide letter dated 19.05.2016 (Annexure - XIX) had

taken up the issue regarding expediting installation of reactors.

TCC deliberations

SRLDC/SRPC Secretariat had requested all entities to expedite the reactor

commissioning since AP, Telangana and North Karnataka were facing sustained

high voltages. In the Special TCC Meeting held on 02.08.2016, it had been noted

that action on the reactors identified in 39th

SCPSPSR was yet to be taken.

APTRANSCO had suggested that Reactors could also be funded through PSDF.

TCC had stated that the proposals in this regard could be submitted to NLDC for

PSDF funding.

21.3 SRPC noted the above and requested the concerned entities to expedite the reactor

commissioning.

Kalpakka 125

36th

SC

Bus

month of June

2016 with a

delivery schedule

of 18 months.

Chittoor 125 39th

SC

Vijayawada 125 39th

SC

APTRANSCO/APGENCO

VTPS Stage IV 125 39th

SC

KPTCL Davangere 125 39

th SC

Talguppa 125 39th

SC

TANTRANSC

O

Almathy 125 39th

SC

Kaythar 125 39th

SC

TANTRANSC

O/ TANGEDCO Mettur 125 39

th SC

TSTRANSCO

Mamidipalli 125

36th

SC

Bus

LOI was ready and

awaiting PSDF

funding.

Gajwel 125 Bus

Sankarapalli 125 Bus

Mehboob Nagar 125 Bus

Malkaram 125 Bus

TSTRANSCO/

TSGENCO Srisailam LB 125

39th

SC

NPCIL Kaiga 2 x 125

Bus

Tender document

for both the

reactors under

preparation.

UPCL Udupi 2 x 125 39

th SC

Awaiting CERC

clearance for

capitalization.


21.4 Dynamic Compensation (Approved in 36th

SC)

Entity Bus Name

SC

MVA

GVA /

KA

Dynamic

Compensation

(STATCOM)

Mechanically

Switched

Compensation

(MVAR) Remarks

Reactor Capacitor

PGCIL

Hyderabad 18.4/

26.5

+ 200 MVAR 2x125 1x125

Under

Tendering

Udumalpet 19.4/

28.0

+ 200 MVAR 2x125 1x125

Trichy 12.5/

18.0

+ 200 MVAR 2x125 1x125

PSDF– Installation of STATCOM by Powergrid in Northern and Southern Region

21.4.1 MS, Appraisal Committee and ED, NLDC vide letter dated 23.06.2016 (Annexure -XX)

had referred to funding of the schemes of POWERGRID under PSDF for installation of

STATCOM in Northern and Southern Region submitted by POWERGRID at an

estimated cost of Rs 367.7 crore and Rs 472.55 crore respectively. The schemes were

deliberated by the Appraisal Committee headed by Chairperson, CEA in the Meeting

held on 31.05.2016. Committee was of the view that approval of the concerned RPC

may be taken for further evaluation.

21.4.2 The issue had been deliberated in the Special TCC Meeting held on 02.08.2016.

TCC deliberations

PGCIL had stated that the Tariff (O&M expenses and other expenses) as decided by

CERC would be required to be borne by beneficiaries. In case PSDF funding is not

approved, PGCIL was willing to take up the project on its own funding. On a query on

STATCOM at Jeypore, CTU informed that STATCOM was also covered in ER scheme

and has been submitted for PSDF funding.

KPTCL had suggested that one STATCOM could be shifted to any 400 kV SS of

Bengaluru. KPTCL was suggested to kindly take up the matter with the Standing

Committee on Power System Planning.

TCC had recommended the proposal for funding through PSDF. PGCIL could take up

the project by itself in case proposal was not approved through PSDF. However, all

efforts should be made by PGCIL for PSDF funding.

SRPC deliberations

21.4.3 Director (T), KPTCL requested SRPC for diversion of one STATCOM to Bengaluru

area.

21.4.4 Director (O), PGCIL said that STATCOMs were getting firmed up, based on the studies

carried out 2 years back and hence one should go ahead with the approved locations. The


scenario had changed significantly with huge integration of renewable; and a new study

could be carried out to identify additional requirement of STATCOMs.

21.4.5 Director (T), KPTCL opined that one STATCOM was required for Bengaluru area.

21.4.6 After deliberations, SRPC approved the TCC recommendations. SRPC suggested that a

new study on STATCOM requirement could be carried out and feedback provided to the

Standing Committee. KPTCL’s request could also be considered in the Standing

Committee.

21.5 Reactive Power Planning

21.5.1 In the 5th

NPC meeting held on 08.04.2016 (MoM dated 29.04.2016), the following had

been noted:

In 4th

meeting of NPC, it was agreed that states should adopt a proactive approach in

the matter of reactive power planning, and that the provisions regarding reactive

power planning similar to those mandated in the IEGC for the CTU should be

included in the respective State Grid codes.

After detailed deliberation, it was agreed that the proposal of capacitor installation

planning by stars/entities would be referred to RPCs by PSDF Sub-Committee or

routed through RPCs by States/entities and the proposal would be vetted by the

respective RPC.

21.5.2 The status of Capacitor installation in Transco/Discoms is given below:

Utility Reactive Power Planning Voltage

level Remarks

APTRANS

CO

32 x 7.2 MVAR

4 x 14.4 MVAR

On 33 kV

side

4 x 7.2 MVAR Capacitors installed

APEPDCL Srikakulam : 5 x 2 MVAR

Vizianagaram: 2 x 2 MVAR

Visakhapatnam:5x2 MVAR

Rajahmundry:10x 2 MVAR

Eluru : 4 x 2 MVAR

33/11 kV

Level

APSPDCL April 2015 : 11 x 2 MVAR

May 2015 : 16 x 2 MVAR

July 2015 : 1 x 2 MVAR

Aug 2015 : 2 x 2 MVAR

Sep 2015 : 2 x 2 MVAR

11 kV

level

TSNPDCL 123 x 2 MVAR

118 x 2 MVAR

54 x 2 MVAR and 36 x 1 MVAR

capacitors had been installed.

TSSPDCL 221 x 2 MVAR 11 kV

level

185 x 2 MVAR erected.

KPTCL Bengaluru Tr. Zone:708.8

MVAR

12.1 kV Retendered on 19.05.2016. PO likely in

July 2016. Commissioning by Aug 2017

Bagalkot Tr. Zone :258.1

MVAR

12.1 kV 39 Capacitor Bank supplied- to be

erected. 35 nos/ 15 nos inspection raised/

to be raised.11 KV switchgear placed on

M/s MEI – delivery from last week of

July 2016


Hassan Tr. Zone :136.3

MVAR

12.1 kV 13 Capacitor Bank supplied- to be

erected. 16 nos partially supplied.

Balance 11 Nos to be supplied. 7 nos

Capacitor cell installed. Foundation

completed 22 nos.

Mysore Tr. Zone :60.9

MVAR

12.1 kV All 21 nos (2.9 MVAR) Capacitor Bank

supplied.

11 KV switchgear placed on M/s MEI

on 28.01.2016

18 Nos Capacitor Banks & 18 Nos DP

Structure started

Gulbarga Tr. Zone :98.60

MVAR

12.1 kV 17 nos (2.9 MVAR) Capacitor Bank

supplied. 17 Nos to be supplied.

Tumkur Tr. Zone :281.3

MVAR

12.1 kV

KSEBL 15 MVAR 66 kV Dropped as N/w changed. To be revised

after study.

360 MVAR New proposal to be firmed up

TANGEDC

O

34 x 2.4 MVAR 11 kV Materials received. Drawing approvals

of 18 sides were pending

36 x 2.4 MVAR 11 kV Additional – Administrative approval

accorded for Coimbatore region

16 x 2.4 MVAR 22 kV 6 x 2.4 MVAR would be installed at

Salem/Coimbatore by July 2016

51 x 2.4 MVAR 22 kV Additional – Administrative approval

accorded for Coimbatore region

7 x 24 MAVR 110 kV Works yet to be taken up

780 MVAR of capacitors at

distribution level had been

commissioned out of 1,005

MVAR capacitors planned.

21.5.3 PSDF – Funding of the schemes of the state utilities for installation of

capacitors in the state network at transmission / distribution network

21.5.3.1 MS, Appraisal Committee & ED, NLDC vide letter dated 22.06.2016 (Annexure-

XXI) had referred to the schemes of state utilities for installation of capacitors in the

State Network at transmission/distribution network for funding from PSDF. The

matter was deliberated by the Appraisal Committee during the meeting held on

31.05.2016 wherein, it was decided that assessment of capacitor requirement may be

carried out at regional level by engaging expert agency like CPRI.

21.5.3.2 The issue had been deliberated in the Special TCC Meeting held on 02.08.2016.

TCC Deliberations

TCC had recommended that a regional proposal for capacitors installation would be put

up for PSDF funding. The Study would be conducted by CPRI.


SRPC deliberations

SRPC approved the recommendations of TCC. It was also agreed that all necessary

approvals would be sought from Chairperson, SRPC. The progress would be appraised

in the next meeting of SRPC.

22. OUTSTANDING DUES BETWEEN SOUTHERN AND WESTERN REGIONS

22.1 In the 31st CCM meeting, the following had been noted:

Puducherry Electricity Department vide letter dated 01.04.2016 informed that they had

received Rs 27,39,427/- from Maharashtra State Electricity Board (MSEDCL) for WR-SR

bilateral energy transactions done during October 2001 to December 2002.

Pending payments between WR& SR Constituents as on 02.06.2016 are as follows:

State Receivable from Payable to

Entity Rs Entity Rs

Andhra Pradesh /

Telengana

MPPMCL 1,21,76,270 MPPMCL Nil

Karnataka MPPMCL 13,27,208 CSPDCL 73,72,176

GUVNL 9,40,320

Kerala MPPMCL 1,21,47,260

CSPDCL 7,05,279

GUVNL 4,98,019

Tamil Nadu MPPMCL 1,17,17,268 CSPDCL 92,77,878

Puducherry GUVNL 1,02, 721 GUVNL Nil

KSEBL and TANTRANSCO had informed that they had taken up pending payment

issue with WR constituents, with a copy to SRPC / WRPC Secretariat.

SRTS II, PGCIL had stated that Rs 39,09,165 paid by MPPMCL (MPSEB) towards

50% UI charges from PTC-WR for the energy drawls during September 2002 had

been disbursed to SR constituents.

22.2 Payable amount by PGCIL (WRTS / SRTS) to SR Constituents (as on 02.06.2016)

State/UT Amount

(Rs)

Received(Rs) Paid by SRTS II

on 01.04.2016

(Rs)

Balance to

receive (Rs)

Andhra Pradesh &

Telangana

47,05,447 3,69,848 10,16,847 33,18,752

Karnataka 49,79,733 3,91,407 10,76120 35,12,206

Kerala 27,58,402 2,16,811 5,96,091 19,45,500

Tamil Nadu 47,21,994 3,71.149 10,20,423 33,30,422

Puducherry 9,24,035 72,629 1,99,684 6,51,722

Total 1,80,89,611 14,21,844 39,09,165 1,27,58,602

SR constituents were requested to take up the pending payment issue with the

concerned WR utility directly, with a copy to SRPC / WRPC Secretariat.

TCC Deliberations

SR-II, PGCIL had informed that MP, Goa & DNH had made payments and the same

had been passed on to SR constituents. The same was under process with Chhattisgarh

& Maharashtra. Gujarat and Daman & Diu had stated that they were not able to trace

the documents when the credit was passed on.


PGCIL was requested to expedite the payment issue with WR-Constituents.

TN & PCKL had agreed to settle payment on net-basis (without interest component) as

an initial measure.

PCKL had stated that all accounts with KSEBL had been settled except for Rs. 1.56

Crores towards Interest Component which has to be paid by KSEBL. KSEBL &

PCKL agreed to settle the payment on net-basis (without the Interest component).

SRPC deliberations

22.3 MD, PCKL informed that total payable from KPTCL (to Kerala) was Rs 21.38 crores, while

receivable from KSEBL was Rs 24 crores (including interest component also). KSEBL had

paid them Rs 2.93 crores disallowing KPTCL’s interest component while at the same time

considering its own interest component.

22.4 CMD, KSEBL assured that they would look into this issue and settlement would be without

interest on both the sides.

22.5 Director (F), KSEBL informed that KPTCL had claimed interest of around Rs 11.44 crores.

Statement of account has already been communicated to PCKL and they were willing to sit

together and settle the payments amicably.

23. NON-AVAILING OF OCC APPROVED SHUTDOWN

23.1 In the OCC Meetings, it had been noted with concern that entities were not availing the

OCC approved shut downs as per schedule. Details of availed outages against OCC

approved shut downs are given below:

23.2 Necessary steps were requested to be initiated to adhere to schedules since it affected

ATC/TTC computations, purchase planning by states etc. All constituents had been

suggested to furnish list of availed/non availed/emergency shutdowns in the previous

month against the OCC approved dates along with the reason for non-availing by 5th

of

Entity Mar-16 Apr-16 May-16 Jun-16 Jul-16

Availed % with respect to the OCC approved outages

AP TRANSCO 44 41 35 61 43

KPTCL 9

46 50 20

KER 67 40 83 100

TANTRANSCO 53 16 7 33 35

TSTRANSCO 50 90 64 83 100

PGCIL, SR1 32 21 25 39 55

PGCIL, SR2 50 33 34 54 31

NTPC 75 33 20

NLC 100 100 100 100

NTECL 100

NPCIL 50

KPCL 100 100

PNMTC 100 100 33

KTL 100

MEPL 100

TOTAL 44 35 35 48 41


every month. SRLDC was requested to keep the record of deferred or postponed outages

(which are OCC approved) due to system constraints.

23.3 SRLDC had developed a web based outage coordination system for requisitioning the OCC

approved outages on D-3/5 basis which is available at RLDC website (http://scheduling-

srldc.org:8080/OCS/Account/Login.aspx).

TCC Deliberations

SRLDC had stated that this monitoring may not be required.

SRPC and CEA had pointed out that seriousness in Outage Planning was necessitated

especially after the Grid Disturbance and as per directives of Hon’ble Commission.

Chairperson TCC had stated that all efforts should be to comply to OCC approved dates.

After deliberations, SRLDC had stated they would continue monitoring the outages.

SRPC deliberations


24. SPARE ICT AND REACTOR PLACEMENT AND USAGE PROCEDURE

24.1 In the 13th

Meeting, SRPC (14.05.2010), SRPC had approved one number of 400/220 kV,

315 MVA Transformer and one number of 80 MVAR Shunt Reactor as spare for the entire

Southern Region. In Standing Committee meetings also, some of the existing Reactors

(during enhancement with higher capacity) have been recommended to be maintained as

spares. These spares ICTs and Reactors are to be maintained and used during contingency

for short period of time.

24.2 PGCIL had been requested to kindly furnish the status of spare ICTs/Reactors available in

SR. Presently, there is no ICT is available as spare. The methodology of using the spare

could be discussed and firmed up.

TCC deliberations

PGCIL had informed that as agreed in 13th

& 22nd

SRPC the following was the status:

Region Equipment Location

SR ICT Madurai (would be

reaching in Sep 2016) &

Hyderabad (was being

used at Sriperumbudur)

Reactor Vizag & Gooty (being

used at Somanhalli)

PGCIL had informed that the tariff for utilization of the spare ICT/ Reactor would be billed

to the entity utilizing the spare. It would not be claimed from other beneficiaries.


http://scheduling-srldc.org:8080/OCS/Account/Login.aspx

http://scheduling-srldc.org:8080/OCS/Account/Login.aspx


25. IEGC RELATED ISSUES REQUIRING ATTENTION/ACTION

25.1 Automatic Demand Management Schemes

25.1.1 In line with clause 5.4.2 (d) of IEGC, Automatic Demand Management Scheme was to

have been provided by all constituents by 1st

January 2011. SRLDC & SRPC Secretariat

had repeatedly pointed out that automated scheme was to be in place to meet Regulatory

requirements.

25.1.2 In earlier Meetings, the following had been noted:

AMDS logic was finalized as OD >250 MW or 20 % of Schedule, whichever lower, for

15 minutes when frequency < 49.8 Hz.

This setting (49.8 Hz) would be reviewed in 29th

TCC for subsequent enhancement to

49.9 Hz.

25.1.3 The number of incidents satisfying the existing logic and proposed logic is given in the

table. It was recommended to migrate to IEGC limits of 49.9 Hz:

Month

Present settings Proposed settings as per IEGC

Frequency < 49.8 Hz for 15

Min. and OD = Min DSM

limit

Frequency < 49.9 Hz for 15 Min. and

OD = Min DSM limit

No of

instances

meeting the

freq. limit

No of

instances

applicable to

states

No of

instances

meeting the

freq. limit

No of instances

applicable to states

AP KAR TN

March-16 0 Nil 23 7 0 0

April-16 0 Nil 77 12 4 4

May-16 1 Nil 33 14 5 5

June-16 0 Nil 44 8 8 8

July-16 0 Nil 19 1 1 4

TCC Deliberations

SRLDC and SRPC Secretariat had suggested changing the settings to 49.9 Hz in line

with IEGC. APTRANSCO had stated till the real time SCADA is stabilized the present

set points could be maintained. TSTRANSCO had opined that the revising the set point

to 49.9 Hz was not required.

It was agreed to retain the present set points of 49.8 Hz till next TCC/SRPC.


25.2 UFR and df/dt reliefs

25.2.1 All States had implemented AUFR and df/dt schemes fully. SRPC vide letter dated

29.01.2016 had submitted status report duly certified by SRLDC and SRPC wrt

implementation of SCADA mapping of all constituents to Hon’ble CERC in respect of

Order dated 27.11.2015 vide Petition No. 60/MP/2014. Details of recommended,

implemented, SCADA monitorable and actual relief being realized are shown in the

Table below:


State AP TS KAR KER TN PUD SR

Recommended MW A 2782 2965 3539 1173 4176 103 14738

Implemented MW B 2782 2978 3559 1207 4544 116 15186

% B/A 100 100 101 103 109 113 103

SCADA

monitorable

MW C 1169 1898 3557 1184 3849 116 11773

% C/B 42 64 100 98 85 100 78

Average Visible

Relief in May

2016

MW E 1218 837 2556 1142 1982 94 7829

Wrt monitorable % E/C 104 44 72 96 51 81 67

Average Visible

Relief in June

2016

MW F 1117 825 2077 991 1794 91 6896

Wrt monitorable % F/C 96 43 58 84 47 78 59

25.2.2 In earlier Meeting, the following had been noted:

TSTRANSCO had informed that they had achieved about 70 % mapping.

APTRANSCO had informed that they would ensure 74 % mapping by June 2016.

SRPC had informed that in the NPC meeting it has been noted that there could be no

uniform df/dt settings. Settings for SR would be deliberated in the

Protection/Operation sub-committee Meetings. All constituents had been requested to

take steps to achieve 100 % mapping to comply with Order of Hon’ble CERC.

25.2.3 In the 5th

NPC meeting held on 8.4.2016 (refer Annexure-II), the following had been

noted:

Ensuring proper functioning of Under Frequency Relay (UFRs) and df/dt relays:

“After deliberation it was agreed that each RPC would ensure proper functioning of

UFR and df/dt relays as per the agreed procedure of the region. Actual tripping of

feeder may not be required to test the healthiness of the UFRs. It was also agreed

that RPCs would sent their comments/suggestion on preparation of procedure for

certification of healthiness of UFR and df/dt relays”.

Observation on present UFR setting by Hon’ble CERC Order dt. 27.11.2015 in

Petition No.113/MP/2014 :

“After deliberation, NPC decided that there was no need to review the setting of UFR

and df/dt in present power scenario”.

25.2.4 In the TCC Meeting the following was noted :

APTRANSCO had informed that 25 RTUs would be commissioned by Dec’2016,

and the visibility would be increased to 70 %. APTRANSCO was requested to initiate

action to improve the visibility to 100 %.

TSTRANSCO had informed that administrative approval had been received for 24

RTUs. The visibility would then improve to 100%.

TANTRANSCO was also requested to improve the visibility to 100% which is

presently at 85%.

TSTRANSCO, KPTCL & TANTRANSCO were requested to improve the relief

realization and in case required, additional feeders needed to be identified.



25.3 Restricted Governor Mode of Operation (RGMO)/FGMO of Generating Units

25.3.1 RGMO response is being analyzed in the meetings of OCC. SLDCs were to analyze

RGMO instances posted by SRLDC for the generators in their control area and initiate

suitable action as per orders in respect of 84/MP/2015. Inadequate Response was to be

taken up with SERC (Petition No.302/MP/2013).

25.3.2 Performance of RGMO is being analyzed in the OCC. Summary of instances is given in

the Table below:

State

Hydro Thermal TOTAL

Possible

(MW)

Actual

(MW) %

Possible

(MW)

Actual

(MW) %

Possible

(MW)

Actual

(MW) %

For the incident on 14th

March 2016 (at 01:36 Hrs Frequency change from 49.99 to 49.82 Hz)

AP 5.9 1.3 22.6 145.9 110.6 75.8 151.8 112.0 74

TG 6.2 0.0 0.0 82.8 36.2 43.8 89.0 36.2 41

KAR 2.7 6.2 232.3 152.4 0.0 0.0 155.1 6.2 4

KER 9.9 12.0 121.4 0.0 0.0 9.9 12.0 121

TN 6.7 0.0 0.0 148.2 25.5 17.2 154.9 25.5 16

CGS 0.0 0.0 452.4 119.9 26.5 452.4 119.9 27

SR 31.4 19.6 62.2 981.7 292.3 29.8 1013.1 311.9 31


April 2016 (at 01:19 hrs. frequency change from 49.99 to 49.80 Hz)

AP 188 37 19.6 0 0 187.89 36.87 19.6

KAR 181 7 3.6 16.84 18.17 108 198.17 24.77 12.5

KER 0 0 16.06 35.27 220 16.06 35.27 219.6

TG 83 50 60.3 2.96 -0.66 -22 86.24 49.52 57.4

TN 175 5 3.1 20.02 0 0 194.87 5.46 2.8

ISGS 519 87 16.7 0 0 519.47 86.54 16.7

SR 1147 186 16.2 56 53 94.5 1203 238 19.8


May 2016 (at 17:31 hrs. frequency change from 50.05 to 50.45 Hz).

AP -104 -59 57.3 0 0 -103.6 -59.4 57.3

KAR -166 -42 25.5 -0.8 -20.1 2513 -167.1 -62.5 37.4

KER 0 0 -2.4 -11.3 471 -2.4 -11.3 470.8

TG -87 -87 100.3 0 0 -86.7 -87 100.3

TN -133 -56 42.5 -0.8 -1.4 175 -133.55 -57.83 43.3

ISGS -457 -160 35.0 0 0 -457.23 -159.93 35.0

SR -947 -405 42.8 -4 -33 820.0 -951 -438 46.1


June 2016 (at 14:27 hrs. frequency change from 49.89 to 50.37 Hz).

AP -161 -118 73.6 -2.7 -2.7 -163.2 -120.8 74.0

KAR -171 -10 6.0 -46.5 0 0 -217.9 -10.2 4.7

KER 0 0 -13.2 -12.7 96 -13.2 -12.7 96.2

TG -75 -64 85.6 0 0 -74.8 -64 85.6

TN -132 -47 35.9 -5.8 -0.8 14 -137.8 -48.2 35.0

ISGS -433 -172 39.8 0 0 -432.6 -172 39.8

SR -971 -412 42.4 -68 -16 23.8 -1040 -428 41.2



July 2016 (at 02:37 Hrs, frequency change from 49.98 to 49.73 Hz)

AP 143 53 37.3 0 0 142.7 53.2 37.3

KAR 54 30 56.5 9.9 33.6 339 63.7 64.0 100.5

KER 0 0 11.5 0.5 4 11.5 0.5 4.3

TG 53 53 100.2 0 0 53.0 53.1 100.2

TN 112 25 22.7 0 0 111.9 25.4 22.7

ISGS 431 185 42.9 0 0 430.7 184.6 42.9

SR 792 347 43.8 21 34 159.3 813.5 380.8 46.8

25.3.3 SRLDC vide letter dated 14.07. 2016 (Annexure-XXII) had furnished a summary of

RGMO performance of generating stations of SR during quarter-1 (April-June 2016) to

Hon’ble CERC. SRLDC vide letter dated 06.07.2016 (Annexure-XXIII) had taken up

the issue of primary response referring to NLDC letter dated 27.6.2016.

25.3.4 Regarding extension of RGMO status point to SRLDC/SLDC, the following had been

noted in the Meetings of OCC:

APTRANSCO: Upper Sileru (Cable problems) & Machkund (RTU problem) stations

yet to be extended.

TSTRANSCO: Hydro units to be extended. RGMO was enabled for KTPP St 2 Unit

but status point to be updated.

TANTRANSCO: MTPS- I & II & Hydro stations status point to be extended. Status

point of Mettur Stage III is extended to SLDC.

KPCL: All the status point (except Raichur Unit IV) had been extended to SLDC. It

was informed that these points can be extended to SRLDC also. Status points of all

hydro units like Almathy, Kadra & Gerusoppa HEPs to SLDC had been made

available but yet to be configured to SLDC. RGMO was implemented in BTPS U-3

and has been enabled.

25.3.5 Hon’ble CERC had issued Order on 23.10.2015 in respect of Petition No.

302/MP/2013 and the following was agreed in the 28th

TCC meeting:

Certification regarding declaration (DC) being in conformance with 100 % MCR

(based on CERC order) and other provisions of the Order/Regulation would be

obtained from the generators.

SRLDC would schedule up to the DC of the generators.

In real time, RGMO performance would be monitored

25.3.6 In the OCC Meetings, SRLDC had informed that in the absence of declaration certificate

from all the generators they would be restricting the schedule to the minimum of

Normative DC taking care of the Units on bar and DC declared by the station.

25.3.7 The following was noted in the TCC Meeting:

SRLDC& SRPC Secretariat had expressed concern that some of the generators were

not performing as required. SRLDC presented a summary and informed that in Kerala

& TS performance was good (nearing 100%). In TN & Central Sector it was around

40 %, in Karnataka it was varying between 5-40% while in AP it was in the range of


20-65 % Performance of Talcher Stage-II, NLY TS-II, NLY TS-I Exp, NTPL, CEPL,

IL&FS & TPCIL needed to be improved.

NTPC had stated that there was no problem with RGMO at Talcher Stage II and they

would take up the issue and ensure necessary action. NLC assured that performance

would be improved.

SRLDC had agreed to post FRC computations on its website.

SLDCs were requested to analyze RGMO/ FGMO performance of the embedded

generators. SLDCs were to present analysis of embedded generators in the OCC to

bring out more seriousness on the issue. Senior Management was requested to

allocate staff for such activities in SLDC. TSTRANSCO informed that TSSLDC was

carrying out the analysis and the same was being furnished to SRLDC/SRPC

secretariat. Efforts of TSSLDC were placed on record.

TCC had suggested that all generators should make efforts to ensure RGMO response

and status availability to SLDC/SRLDC.

SRPC deliberations

SPRC noted the above and suggested that all generators should make efforts to ensure

RGMO response and status availability to SLDC/SRLDC.

GM, SRLDC informed that FRC computations had already been posted on SRLDC

website and would be carried out regularly for future events also.

25.4 Demand Estimation for Operational Purpose (Clause 5.3 of IEGC)

25.4.1 Each SLDC was to create a mechanism and facilities to facilitate on-line demand

estimation of demand for daily operational purpose for each 15 minutes block by

01.01.2011. In this regard, following may kindly be noted as contained in Order dated

19th

December 2013 of Hon’ble CERC in Petition No. 249/250/251/MP/2012:

“We direct all STUs/SLDCs of the Northern Region, Southern Region and Eastern

Region to forecast their demand and make adequate arrangements to avoid dependence

on Unscheduled Interchange for meeting their demand or for injecting short term

surplus power, irrespective of the frequency.”

Load Forecasting tool meeting the regulatory requirement was yet to be developed by all

utilities.

25.4.2 In the OCC Meetings, it had been noted that forecast was required for RRAS and

Renewable Framework.

25.4.3 The following was noted in the TCC Meeting:

MS, SRPC had stated that this exercise was essential especially with Renewable

Framework being implemented in most of the states. Difference between forecast and

actual was being discussed in OCC and needs to be minimized. SRLDC stated that it

was a mandated item as per IEGC and was also required for Ancillary Services.

Forecast of wind generation in TN was also to be significantly improved.

TANTRANSCO had informed that forecast of NIWE and Wind Developers was having

a difference of 600- 700 MW (equivalent to 3 thermal units). Demand estimation was


quite accurate and they were in the process of procuring the software and they would be

fully equipped before next summer.

CEA had informed a seminar on load forecasting had been carried out on 25.05.2016.

A model in one state may not work in other state. MoP was willing to give the task of

load forecasting to CEA. In this model, load forecasting data and weather inputs would

be communicated to CEA and CEA would furnish the forecast to the states. Prototype

for each state would be developed. Around Rs. 2.2 Crores was envisaged for the

project and if more states show interest, it could be taken ahead.

It was agreed that a small group would be formed at SRLDC, and demand forecast

exercise would be undertaken for individual states in coordination with SLDCs.

SRLDC was entering into MoU with IMD and weather data would be integrated.

Parallely, all state entities agreed that CEA could carry out state-specific forecasting.

SLDC would submit necessary data to CEA. This would not involve any financial

commitment for the states.


25.5 Sudden Change in Demand/Frequency Excursion

25.5.1 In the earlier Meetings, violation of Clause 5.2 (j) of the IEGC Regulations had been

highlighted. No user is to cause sudden variation in its load by more than 100 MW

without prior intimation to and consent of the RLDC. Similarly no user should reduce the

generating unit output by more than 100 MW without prior intimation to and consent of

the RLDC. Necessary action is sought in respect of demand and generation management

as well as power purchases, so that clause 5.2 (j) of IEGC Regulations is not violated.

25.5.2 Constituents noted the above for compliance.

25.6 Arranging of interruptible loads in four groups

25.6.1 As per IEGC, to maintain the frequency within stipulated band and also to ensure

network security, interruptible loads are to be arranged in four groups of loads. This was

for the purpose of scheduled power cuts/load shedding, loads for unscheduled load

shedding, loads to be shed through UF relays, df/dt relays and loads to be shed under any

SPS Scheme. These loads are to be grouped in such a manner that there was no

overlapping between different groups of loads.

25.6.2 Existing schemes are not meeting Regulatory requirement fully and further action was

required in this regard.

25.6.3 Constituents noted the above for compliance.

25.7 PSS Tuning

25.7.1 3rd

Meeting of PSS tuning was held on 28.06.2015 and MoM is available at SRPC

website. PSS Study group also analyzed the Step Response Test Reports for the

generators which had furnished the reports and the recommendations had been finalized.


It is kindly requested that necessary action may kindly be taken as finalized in the 3rd

meeting of PSS.

25.7.2 Following units were yet to carryout Step Response Test (PSS Tuning) and the action

plan/schedule for SRT was finalized in the 3rd

Meeting of PSS:

Entity Stations/Units

APGENCO Vijayawada TPS U 5 & U6, Lower Sileru HEP U2 to U4, Upper

Sileru HEP U1 to U4, Srisailam RB HEP U1 to U7.

AP IPPs HNPCL U 1 & U2, All gas generating stations

TSGENCO Kakatiya TPP U 2, Kothagudem TPS U5 to U8, Nagarjunasagar HEP

U1, Srisailam LB HEP U1 to U6

KPCL Raichur TPS U1 to U8, BTPS U1 & U2, Yeramarus TPP , Almathy

HEP U2 to U6, Sharavati Tail Race U1 to U4, Varahi UGPH HEP U1

to U4, Nagjheri HEP U1 to U6, Sharavathy HEP U1 to U10

KAR IPPs JSWEL U1 to U4

KSEBL Idukki HEP U1 to U6, Lower Periyar HEP U1 to U3, Sabarigiri HEP

U1 to U6

TANGEDCO NCTPS St- I U1 to 3, NCTPS St-II U1 & U2, Tuticorin TPS U1 to

U5, Mettur St-I TPS U3, Mettur St-II TPS U1, Kundah III HEP U1

to U3, Aliyar HEP U1, Kodayar I U1, Kadamparai HEP U1 to U4,

Kovil Kalappal (Gas)

TN IPPs: STCMS, Private Gas Stations

CGS NTPC, Ramagundam STPS U1 to U7, NTPC Talcher STPS St-II U 4 to U5,

NTPC Kudgi, NTPC- RGCCP, Kayamkulam 2 GTs & 1 ST, NTECL-

Vallur TPS U1 – U3, Neyveli TPS I U7 to U9, Neyveli TPS I Exp U1 &

U2, Neyveli TPS II U1 to U7, Neyveli TPS II Exp U1 & U2, (NLC & TN

JV)NTPL U1 & U2, NPCIL- KGS U1 to U4, NPCIL- MAPS U1 & U2

ISTS connected

IPPs

Simhapuri Energy Ltd (SEL) U 1 to U4, MEPL U1 & U2, , Coastal Energen

U1 & U2, IL& FS U2, Lanco Stage II & III, SGPL, Nellore

TCC deliberations

MS, SRPC had requested all entities to kindly adhere to the action plan finalized in the 3rd

PSS meeting.

SRPC noted the same.

25.8 Scheduling of Simhadri STPS Stage-I by SRLDC

25.8.1 APTRANSCO had filed a Petition in CERC in this regard and the petition was admitted

on 7th

January 2016.

25.8.2 Commission had reserved Order in the matter in respect of Petition No.291/MP/2015.

25.9 SPS related Issues

25.9.1 Implementation of additional loads for KKNPP Unit-2 SPS

25.9.1.1Unit II of Kudankulam was expected by July 2016 and all constituents thus needed to

identify feeders for the quantum envisaged as given below:

Trip

Signal AP KAR KER TN TS PUDU SR

KKNPP 116 174 91 315 132 20 848


25.9.1.2 In the OCC Meeting, it had been noted that Karnataka and Puducherry were yet to

identify loads for KKNPP Unit-2 SPS. In 121st OCC meeting a mock test for the

identified loads was proposed to be carried out in July 2016.

TCC deliberations

MS, SRPC had informed that mock test for SPS had been scheduled but could not take

place since Somanahalli link was down. However, in a couple of days, the mock test

would be taken up.

25.9.2 SPS Maintenance Protocol

25.9.2.1 In the 28th

Meeting of SRPC, SPS Maintenance Protocol to be implemented by PGCIL

was agreed. In the OCC Meetings, PGCIL had informed that Management Approval

has been received and the order may be placed on M/s Alstom.

TCC deliberations

PGCIL informed that offer of M/s ALSTOM was very costly. PGCIL suggested that

they would maintain sufficient spares and carry out maintenance by themselves.

TCC agreed for the same.

25.9.2.2 SRPC noted the above

25.10 Instantaneous Scheme for Sudden Withdrawal of Wind

25.10.1 TANTRANSCO had implemented the SPS for sudden withdrawal of Wind generation

at Udumalpet and Kayathar area and the same was in operation with effect from

27.04.2016.

25.10.2 In the Special / OCC meeting, KPTCL had also been suggested to implement

instantaneous scheme for sudden withdrawal of wind in line with TANTRANSCO.

TCC deliberations

MS, SRPC had informed that instantaneous scheme for sudden withdrawal of wind in

respect of KPTCL has been dropped in the 122nd

OCC Meeting keeping in view the

dispersed wind injection . The scheme could be reconsidered, if need arose in future.

25.11 Energy Generation data Management from Renewable Energy Sources

Monthly generation data in respect of renewal energy sources is to be submitted to CEA

with a copy to SRPC.

25.12 Pending issues in respect of NPCIL / BHAVINI Units

25.12.1 A Special Meeting on pending issues in respect of NPCIL/BHAVINI was held on 19th

May 2016 in SRPC, Bengaluru (MoM available at SRPC website). The following had

been deliberated:

Deviations of planned outages of NPCIL units


Maintenance of Units should not be planned during the period January to May of

the year in view of high demand in Southern region.

NPCIL to adhere to maintenance schedule finalized in the annual outage plan/OCC

without deviations.

Status of 2 x 125 MVAR Reactors at Kaiga GS

In view of grid requirement and time involved in procurement/commissioning of

reactors, NPCIL was recommended to take up procurement of both 125 MVAR

reactors simultaneously.

KKNPP Stage-II (2 x 1000 MW) and reactors planned were 2 x 125 MVAR

NPCIL assured that they would take up the matter with CTU regarding finalization of

reactive requirements, keeping in view no absorption by the Stage II units. Limitation

of 100-150 MVAR absorption for limited period but not on a sustained basis would

also be communicated.

Enabling of Auto Reclose feature

Kaiga-Guttur Lines

Time differentiated A/R scheme of 400 kV Kaiga- Guttur lines would be implemented

by June 2016. A/R scheme may be reviewed subsequently, in case more trippings

occur.

KPTCL was also suggested to increase patrolling and maintain ROW of the line.

Clearing of ROW was required to be taken up once before the monsoon commences

and also immediately after monsoon. Specific instructions in this regard needs to be

communicated to field staff (copy of which would be furnished to SRPC/SRLDC).

400 kV KKNPP – Madurai line

Concern of KKNPP regarding shunt reactor /PIR would be taken up with PGCIL.

Subsequently, the A/R implementation would be reviewed.

Status update on KKNPP-Tuticorin PS D/C lines would be sought from PGCIL.

All 230 kV lines emanating from MAPS

MAPS agreed to implement the A/R scheme by June 2016

All 230 kV lines emanating from BHAVINI

BHAVINI was suggested to implement A/R scheme by June 2016.

MVAR interchange at Kaiga GS and KKNPP Tap changing at Kaiga GS and KKNPP

KKNPP and KGS confirmed that they would issue specific directives to control room

to control the VAR injections above 400 kV and 220 kV, as applicable. They would

also make the control room staff aware of grid requirements and about the action to be

taken by them.

In case further restrictions are coming up with regard to MVAR absorption at KGS, it

was very imperative that KGS goes for 2x125 MVAR reactors now itself.

Pending SCADA inputs from NPCIL/BHAVINI

MAPS, KGS, KKNPP and BHAVINI to take action as deliberated in the Meeting.

Difficulties in laying OFC cable in switchyard of Kaiga GS


It was noted that in the communication meeting held on 17.5.2016, PGCIL had

informed that the issues had been resolved and the works would be completed by the

end of June 2016.

Declared Capacity (DC) revision in case of generating Unit outages/revisions

KGS, MAPS and KKNPP also felt that DC should be close to actual. Necessary

mechanism would be put in place to avoid such discrepancy.

It was noted that redundant internet connectivity needs to be ensured by NPCIL units.

Planning of Black Start Mock drill of Nuclear Power Plants

It was agreed that Black Start Restoration Procedure Mock Exercise for Nuclear

Power Plants would be co-ordinated on days of Bus Shutdown / maintenance program.

The station would take care of necessary resources required for such Mock Exercise

and co-ordinate effectively. In this regard, it was agreed to have a plant level meeting

with SRLDC and develop an internal procedure for detailing sequence of operations

required at plant level in a similar manner as was earlier done for NTPC,

Ramagundam.

Status of recommendations finalized in PSAG-14 meeting held on 16.12.2015

MAPS to complete all actionable points.

TCC deliberations

NPCIL had informed that proposal for 2x125 MVAR reactors at Kaiga had been

agreed and tenders would be called for both the reactors. Engineering details had been

worked out and tender specifications were being taken up. KPTCL had expressed that

reactors needed to be expedited since insulators were failing due to sustained high

voltages.

A/R for Kaiga-Guttur and MAPS lines would be commissioned within two months.

Hardware issues at MAPS had been addressed. Study for Kaiga-Guttur delayed A/R

had been carried out at HQ and they had confirmed in affirmative. Even the line

healthiness had also improved.

PGCIL had stated that line reactor and PIR were generally required for line lengths for

more than 200 kms. PGCIL had suggested that A/R for Kudankulam – Madurai line be

dropped for the time being.

Details of A/R scheme had been intimated to BHAVINI by NPCIL.

SRLDC had informed that Kaiga Stage-II Units were not absorbing VARs as agreed in

the special meetings. NPCIL had informed that stator core failure was experienced in

unit 3, and preliminary indications were that the failure could be attributable to the

units continuously operating on leading side. SRLDC had pointed out that all thermal

generators are same and many of the units are running continuously on leading side

and apprehensions of NPCIL needed to be viewed in larger perspective. SRLDC had

requested NPCIL to furnish the necessary details to them.

SRPC deliberations

25.12.2 Director (T), KPTCL pointed out that KPTCL was making all efforts to keep the line

healthy and all restoration works were taken earnestly. Operating the line on sustained

over voltage could lead to disruptions and also affect the reliability of evacuation from


nuclear station. He requested NPCIL to commission the two reactors at Kaiga at the

earliest.

25.12.3 Director (O), NPCIL assured of necessary action on the above points. He informed that

two reactors at Kaiga are being taken up simultaneously.

25.12.4 SRPC noted the TCC deliberations.

25.13 Un-requisitioned Power

25.13.1 Hearing of CERC on Petition No. 16/SM/2015 (Difficulty encountered in

implementation of the Commission`s order dated 5.10.2015 in Petition No.

310/MP/2014 regarding scheduling of unscheduled surplus power from the inter-

State generating stations) was heard on 23.02.2016. CERC Order is awaited.

25.13.2 Issue of URS sale had also been discussed in the OCC Meetings. MoP vide letter

dated 09.05.2016 (Annexure-XXIV) had suggested for enabling of URS sale in

order to implement the provisions of Tariff Policy, and it was requested to kindly

take necessary action.

25.14 Treatment of Bilateral short term and collective transaction in case of grid

disturbances

In the 5th

Meeting of NPC held on 08.04.2016 (refer Annexure-II), after deliberations,

NPC decided that in view of the comments received on the proposed accounting

methodology, the Working Group would meet again to arrive at consensus on the

methodology. The finalized methodology would be put up to NPC in the next Meeting

for approval.

25.15 Power swing blocking (PSB) setting in Distance relays

In the 5th

Meeting of NPC held on 08.04.2016 (refer Annexure-II), NPC while

agreeing to NRPC's opinion to have a uniform PSB setting across all regions, decided

to maintain status quo in different regions and await the report of the Consultant

appointed for implementation of the recommendations of the 'Task Force for Power

System Analysis under contingencies' before further deliberations in the matter.

25.16 Other Issues requiring kind attention of TCC / SRPC

The following issues which are being followed up in the Meetings of Sub-Committees of

SRPC merit kind attention:

It was noted that some of the units / elements were being commissioned from

retrospective dates. Recently, Kakatiya TPS Stage-II (600 MW) unit was

commissioned by TSGENCO retrospectively from 24.03.2016 and the same was

informed to SRLDC on 20.05.2016. It was noted that proper procedure for testing,

declaration of COD etc. is to be followed diligently.


Hon’ble CERC had brought out CERC (Deviation Settlement Mechanism and related

matters) {Third Amendment} Regulation 2016 which was implemented with effect

from 30.05.2016. Definition of renewable rich state and deviation limits for renewable

rich states etc. have been specified for computation of charges and additional charges

for deviation. In this regard SRPC vide letter dated 30.05.2016 (Annexure-XXV) had

requested all constituents to verify the wind and solar installed capacity values which is

tabulated and furnish certified installed capacity of wind and solar in state control area

(excluding the wind/solar being scheduled by SRLDC). It was also requested that

whenever the installed capacity increases to more than 1,000 MW and more than 3,000

MW, values need to be certified and communicated to SRPC. Whenever scheduling

responsibility changes from SLDC to SRLDC the revised figures are also needed to be

certified and communicated.

Ramagundam ICT 2 is under prolonged outage from 30th

June 2015. Replacement of

this faulty 200 MVA, 400/132kV ICT with 315 MVA, 400/220kV ICT by

TSTRANSCO was agreed in 39th

Standing Committee. SRLDC vide letter dated

01.06.2016 had requested TSTRANSCO that immediate action may kindly be taken for

commissioning of the new ICT as there is continuous violation of N-1 security

constraints during peak hours due to the non-availability of the ICT, which may lead to

cascade tripping and loss of load. TSTRANSCO informed that ICT had reached site

and commissioning/erection activities had started was expected to on bars by end of

July 2016.

In the OCCM, it was noted that Ramagundam ICT 2 was expected to be

commissioned by September 2016.

N’Sagar – Cuddapah FSC 1 at Cuddapah station is under prolonged outage from 12th

March 2016 due to capacitor failure. SR-I, PGCIL had informed that rectification works

were under progress and were expected to be completed by end of July 2016.

In the OCCM, it was noted that FSC-I was rectified on 27.07.2016.

Issue of frequent tripping of Vallur- NCTPS lines due to insulator tracking and causing

heavy dip in voltages was under discussion since May 2014. NTECL has been

continuously raising the issue of regular washing of the insulator/replacement with

polymer insulators. TANTRANSCO had been requested to go for complete

replacement of the insulators with polymer insulators. Gantry insulator replacement was

to be carried out either by NTECL / PGCIL for the other lines emanating from NTECL.

In OCCM, TANTRANSCO had informed that they were planning for replacement

of some insulators from Oct’2016 in coordination with PGCIL. TANTRANSCO

was suggested (again) to go for complete replacement.

Regarding NLC TS II – NLC TSI Expn reconducting works, it was noted that end span

works were yet to be reconductored. SR-II PGCIL had informed that BOQ had been

put up for management approval.

In OCCM, PGCIL had informed that they would carry out the reconductoring

works in Dec’ 2016

Regarding implementation of URTDSM (PMU) project in SR, PGCIL had informed that

in the first phase, installation of 62 PMUs were under progress. In the Special

SCADA/communication Meeting held on 17th

May 2016, constituents/generators

expressed the difficulties being faced w.r.t . PMU installation at sites under URTDSM.

Following had been finalized after deliberations:


PGCIL to furnish detailed procedure with respect to PMU installations under

URTDSM project viz, roles and responsibilities of users, responsibility upon receipt of

equipment at location, responsibilities during the installation, O&M after installation,

handing over, mandatory spares / O&M Spares responsibility etc.

Prior communication about material supply, commissioning, installation, testing etc

would be ensured to identify Nodal Officers.

PGCIL Official should be present during material receipt and during

installation/commissioning/testing.

Equipment handing over procedure should be clearly specified.

Regarding O&M, the concerned entity would inform PGCIL regarding any issue and

in-turn PGCIL would get the issue resolved.

URTDSM status was discussed in the Special meeting held on 23.08.2016 (MOM

available on SRPC website).

Status of Video Conferencing facility at SLDCs is given below:

State Status

KER SLDC &TS SLDC Implemented

AP SLDC Would be provided at Vijayawada

by Dec 2016

KAR SLDC All equipments installed final

connectivity to be made through.

TN SLDC PO placed- would be implemented

by Oct 2016.

PUD SLDC Budget for 2016-17 not yet

finalized.

SRLDC had taken up ICT Tap optimizations studies periodically and suggested tap

change action at 765/400 kV and 400/230-220 kV SS. However, this optimization is

effective only if it is carried out upto sub transmission level. To expand optimization

study to this level, SRLDC had requested 230/110 kV, 220/110 kV, 220/66 kV, 210/130

kV transformer technical data and voltage data from SCADA for peak and off peak

scenario. Constituents which have not furnished the data in the requisite formats are

requested to please furnish the same.

SRLDC had emphasized the need for alternate path between Somanahalli and SRLDC

and requested PGCIL to ensure the redundant alternate path considering the recent

SCADA blackout for long duration due to fiber cut between Somanahalli & SRLDC.

SRLDC requested SRPC to take up the requirement with Senior Management of PGCIL

and flag the issue to TCC / SRPC. SRLDC vide letter dated 16.06.2016 (Annexure-

XXVI) has taken up the issue with POWERGRID SR- II in this regard. SRPC vide letter

dated 13.06.2016 (Annexure-XXVII) had taken up the issue of OPGW stringing works

in Karnataka enclosing SR II, PGCIL letter dated 09.06.2016. In the 121st

OCC, SR-II

PGCIL had informed that Powertel OFC redundant connectivity was available to

SRLDC.

All tripping details need to be uploaded on SRLDC web portal. Para 29 of Hon’ble

CERC Order dated 20.02.2014 in respect of Petition No.146/MP/2013 is brought to kind

attention. Non furnishing of timely tripping details would be treated as non-compliance.

Tripping information details are to be uploaded within the stipulated time frames.


Information regarding Cyber Security to be furnished to Chief Engineer, DPD, CEA,

New Delhi. Report on Physical Security, other Mock Drills for CMP, Mock Drill for

Black Start Restoration to be furnished to Chief Engineer, DMLF, CEA, New Delhi.

Copy of the report is to be sent to SRPC Secretariat by e-mail.

Procedure for restoration of remotely controlled sub stations of PGCIL along with the

contact no. of the person who would take care during emergency conditions needs to be

developed and furnished to SRLDC. SR-II PGCIL had furnished the partial details in this

regard. Comprehensive procedure was yet to be developed.

In the OCC meetings, PGCIL had informed that all the Substations were manned

and mock test could be carried out at any time under intimation to RTAMC.

Auto Reclose feature was to be enabled for 220 kV Ambewadi – Ponda and Nagjheri

connected lines. Regarding Ambewadi-Ponda, KPTCL had informed that the R&M

works were going on for this line and the A/R would be covered in R&M works.

Regarding Nagjheri connected lines, KPCL had informed that numerical relays had been

received and works would to be completed by August 2016.

In the OCC meetings, it was noted that A/R for Ambewadi-Ponda has been

implemented and for Ambewadi-Xeldam, it was to be implemented.

Operation of Nagarjuna Sagar in pump mode.

In OCCM, , it was informed that NSR Tail pond was ready for commissioning and

testing was yet to be carried out. Present reservoir level was around 504.7 m and

the level required for testing was 535 m.

SRLDC had expressed concern on high loadings and N-1 violation of ICTs in TN

(Arasur, Udumalpet, Pugalur, Trichy, Madurai,), AP (Vemagiri), KAR (Somanahalli,

Mysore, Hoodi & Nelamangala) and TS (Ramagundam). It was pointed out that there

was insufficient action in controlling the loading of ICTs leading to N-1 criteria violation

in compliance of Regulation 3.1f (8) of CEA (Grid Standards) Regulations 2010 and

Regulation 3.5 a(i) of CERC Indian Electricity Grid Code Regulations 2010.

SRLDC had expressed concern about the line loading on 400 kV Gooty-Nelamangala,

Gooty-Somanahalli and Hiriyur-Nelamangala lines which were violating N-1 criteria.

RRAS generators had expressed concern that Forms AS-4 & AS-5 were not being

received by them as stipulated in Procedure. This information was sought by the

Management and by the Accounts Section to settle the bills. SRLDC had clarified that

the nodal agency (NLDC) was issuing Up/Down regulation through SRLDC. RRAS as

reason was being showed in remarks of Form “D”. The exact details of block wise

schedule were being shown for every revision and implemented schedule was available

in SRLDC website. Accordingly necessary information is already available on the

SRLDC website. Regarding details of timing and reasons for kicking in, NLDC was

preparing a monthly report and the same was being submitted to CERC which would be

shared with the constituents. Quantum conveyed by NLDC (Nodal agency) may get

changed at RLDC while scheduling due to ramp up/ ramp down rates and other pending

requisition (of beneficiaries). Thus forwarding the message to generators in real time may

not be feasible. Implementation difficulties are being faced by Nodal agency and

accordingly the Procedure would be relooked after experiencing for 6 months and this

clause could be modified.


26. AUGMENTATION OF TALCHER-II TRANSMISSION SYSTEM

26.1 KSEBL vide letter dated 25th

September 2015 had stated that since all Southern states

would get benefitted with the early commissioning of Talcher-II transmission system, all

SR Constituents may jointly implead as a party in the Civil Appeal filed by TNEB before

Hon’ble Supreme Court. In the 27th

TCC meeting it was suggested that SR constituents

may jointly implead as a party in the Civil Appeal filed by TNEB in Honorable Supreme

Court.

26.2 Hon’ble Commission in its Order dated 05.11.2015 in respect of Petition No. 14/SM/2015,

in the matter of ‘Notice under Section 19 of the Electricity Act, 2003 for revocation of the

inter-State transmission licence granted to Talcher II Transmission Company Ltd.’ had

passed the Order :

‘13. In exercise of our power conferred under Section 19 (3) of the Act and Regulation 20

of the Transmission Licence Regulations notice is given to the licensee to show cause

within three months from the date of this order as to why the transmission licence granted

for the transmission project should not be revoked in terms of the provisions of Section 19

of the Electricity Act and Transmission Service Regulation as quoted above. If no

response is received within three months from the date of issue of the order, the licence

shall be deemed to have been revoked.’

26.3 In the 29th

SRPC Meeting, TANTRANSCO had stated that as discussed in earlier SRPC

meeting, all constituents had been suggested to jointly implead but no action has been

taken. They were in the process of invoking the Bank Guarantee.

27. INCLUSION OF DRAWAL OF MAHE IN REA

27.1 PED vide letter dated 11.01.2016 had informed that including the drawl of Mahe region

into REA was approved in 21st SRPC Meeting. It had been requested to arrange for ABT

compliant SEMs at both the ends.

27.2 In the 29th

SRPC Meeting the following had been noted:

Puducherry ED had informed that the S/S is owned by PED but maintained by

KSEBL and thus applying for LTA with Kerala did not arise. The communication

and the metering requirements had been established and the procedure could be

agreed at the earliest.

KSEBL had stated that in view of the ownership of the S/S by PED they would look

into the matter. The drawal visibility needed to be ensured at Kerala SLDC.

Director, KSEBL had agreed to look into this matter favorably.


27.3 SRPC vide letter dated 08.07.2016 had requested the following:

Total number of interconnections between Kerala and Mahe with complete details

The Status of RTU – communication facility to SRLDC from KSEB and Mahe ends

The SEM scheme installed

The status of petition to be filed in CERC for the approval of YTC of line (s) between

Kerala and Mahe

TCC deliberations

KSEBL & PED confirmed that all the issues had been resolved.


28. SHARING OF TRANSMISSION CHARGES OF TRANSMISSION ASSETS OF

NATIONAL IMPORTANCE

28.1 Hon’ble Commission in its Order in Petition No. 67/TT/2015 (Sharing of Transmission

charges) had stated the following in Para 30:

“Since, these assets are proposed to be considered as assets of national importance and

all the regions are proposed to bear the transmission charges, we consider it necessary

to hear the DICs of all the regions”.

28.2 The following had been deliberated in the 29th

Meeting of SRPC:

KSEBL/TANTRANSCO had stated that the planning of this system had not been

deliberated in the Standing Committee of SR and SRPC meetings. In the present

scenario the SR constituents were unlikely to reap any benefit from this HVDC links

between NER and NR.

PGCIL had stated that Kerala and Tamil Nadu were the main beneficiaries of Raigarh

– Pugalur – Madakathara HVDC link. Hence, all the constituents should show

positive approach towards sharing of the transmission charges for the assets of

National importance.

It was agreed that Chairperson, SRPC could take up the issue and concerns of SR

constituents with Chairperson, CERC.

28.3 Subsequently, Chairperson, SRPC vide letter dated 16.03.2016 (Annexure-XXVIII) had

taken up the issue with Chairperson, CERC.

In the ROP for date of order dt.03.03.2016, the following had been stated:

‘…Accordingly, we direct that the transmission charges allowed in para 6 of this order

shall be provisionally recovered from DICs of all regions in accordance with the

provisions of Central Electricity Regulatory Commission (Sharing of Inter-State

Transmission Charges and Losses) Regulations, 2010 as amended from time to time,

subject to the final decision of the Commission in the present petition. It is further

directed that any grant/assistance received from Government of India/PSDF Fund shall

be applied to reduce the cost of the assets and consequently, the Order in Petition

No.67/TT/2015 Page 13 of 13 transmission charges of these assets. We direct PGCIL to


pursue the matter in the right earnest for early release of grant/assistance.

The matter shall be listed on 14.4.2016 for further directions.’

In the ROP for date of hearing 19.04.2016, the following had been stated:

‘………..The Commission directed the respondents, who have not filed their reply, to file

reply as a last opportunity by 29.4.2016 and the petitioner to file rejoinder, if any, by

6.5.2016. The Commission directed the parties to comply with the directions within the

timeline specified.

4. The Commission directed to list the matter on 31.5.2016 for final arguments.’

SPRC deliberations

MS, SRPC informed about ROP of Hon’ble CERC for date of hearing

05.07.2016. It could be kindly noted that submissions had been made by various

entities like GRIDCO, KSEBL etc and final Order was awaited.

29. APPROACH BEING TAKEN BY CTU FOR RESERVING THE TRANSMISSION

CAPACITY FOR THE CUSTOMERS WHO HAVE AVAILED LTA WITHOUT

IDENTIFYING BENEFICIARIES

29.1 The following was noted in the earlier Meetings of SRPC:

KSEBL had pointed out that the generators had been granted LTA with target region

about 5-6 years ago. The prospect of entering PPAs by these generators was quite

remote. Most of the generators were selling power under STOA/MTOA. Many

generators were not paying transmission charges since LTA had not been

operationalized. Basic issue was the time limit for the LTA to get operationalized and

also applicability of the transmission charges. KSEB felt that this arrangement was

blocking eligibility of other states.

CTU had stated that most of the referred generators had been granted LTA in 2009-10.

Transmission corridors were planned for them which was getting commissioned in

phases. LTA would get operationalized once the identified system is commissioned and

they would be liable to pay transmission charges. System takes around 3 -4 years to

develop. It was also pointed out that the Regulation allowed application with only

target region.

29.2 KSEBL issue was further heard on 26.04.2016 by Hon’ble CERC on Petition No.

249/MP/2015. In the ROP ( date of hearing 19.05.2016) CTU had been directed to file

minutes of SPRC meeting held during 14.3.2016 to 17.3.2016. The petition was listed for

hearing on 30.6.2016.

SRPC deliberations

29.3 MS, SRPC informed that Petition had been disposed off as KSEBL was not further

pursuing the matter.

30. STATUS OF PHASE I AND PHASE II OF PROTECTION AUDIT

RECOMMENDATIONS

30.1 Timelines given by Hon’ble CERC to various SR-Constituents for the completion of their

respective Phase-I and Phase-II works of Protection Audit recommendations are given

below:


Constituent CERC Petition

No. /Date of

Order

Date for

completion of

Phase-I

activities

Date for

completion

Phase-II

activities

Remarks

APGENCO 146/MP/2013

Date of Order:

20.02.2014

Affidavits dt:06.09.2014 & 17.09.2014

were filed on behalf of APGENCO in

CERC duly stating that the

implementation of Phase-l & Phase-II

activities of Thermal & Hydel Stations

would be completed by 31-05-2015 &

31-12-2015 respectively, pursuant to

CERC order dated 20.02.2014 against

the Petition No.146/MP/ 2013.

APGENCO vide their letter

dated 16.05.2016 informed that

a further affidavit Dt. 10-05-

2016 had been filed before

CERC on behalf of APGENCO

duly stating the status of

implementation of Phase-I and

Phase-II activities of Thermal

and Hydel Stations would be

completed by 31-07-2016 and

31-12-2017 respectively.

APTRANSCO 95/MP/2015

Date of Order:

27.04.2015

IA No. 10/2016

in Petition

95/MP/2015

Date of Order : 15.06.2016

31.12.2015

31.08.2016

31.12.2015

31.08.2016

APTRANSCO had filed an

Interlocutory Application in

Petition No. 95/MP/2015 before

Hon’ble CERC on 09.03.2016

seeking extension of time up to

31.08.2016 for completion of

Phase-I & Phase-II of Protection

Audit Recommendations.

The Commission in their final

Order dated 15.06.2016 gave

time extension up to 31.08.2016

with the following remarks:

‘Taking note of difficulty

projected by the petitioner, we

allow time to the petitioner till

31.8.2016 as a last opportunity

for completion of Phase-I and

Phase-II of protection audit

remarks failing which the

petitioner shall be liable for

proceedings under Section 142

of the Electricity Act, 2003 and

other relevant provisions.’

TSGENCO 146/MP/2013

Date of Order :

20.02.2014

TSGENCO made Affidavit dt:

16.12.2014 on status of

implementation of Phase-I and Phase-

II activities pursuant to CERC order

dated 20.02.2014 (Petition No.

146/MP/2013) and informed to

complete the above subject

work on 31.08.2015.

TSGENCO has filed an

affidavit before Hon’ble CERC

seeking further time extension

up to 31.03.2017 for

implementation of balance

activities of Phase-I and Phase-

II recommendations against the

CERC Order dated 20.02.2014

in respect of petition no:

146/MP/2013 with IA. 36/2013.

TSTRANSCO 83/MP/2015

Date of Order:

14.5.2015

31.10.2015 31.08.2016 W.r.t. Phase-I works,

TSTRANSCO informed that

more than 90% of Phase-I

activities had already been

completed, and the balance

works would also be completed

in one month time.

W.r.t. Phase-II works,

TSTRANSCO informed that

they are in the process filing an


application before CERC


up to December, 2016.

KPCL 374/MP/2014

Date of Order:

18.8.2015

265/MP/2015

Date of Order:

03.05.2016

31.10.2015

31.12.2016

31.12.2015

31.12.2016

KPCL had filed a Petition (No.

265/MP/2015) dated 29.10.2015

before Hon’ble CERC praying

to grant an extension of time up

to 30.12.2016 for completing

the Phases I and II activities.

The Commission in their final

Order dated 03.05.2016 gave

time extension up to 31.12.2016

with the following remarks:

"Taking note of difficulty

projected by the petitioner, we

allow time to the petitioner till

31.12.2016 as a last

opportunity for completion of

Phase-I and Phase-II of

protection audit remarks. If the

petitioner fails to comply with

the order, it shall be liable for

action under Section 142 of the

Electricity Act, 2003 as already

observed in our order dated

20.2.2014 in Petition No.

146/MP/2013.”

KPTCL 374/MP/2014

Date of Order :

18.8.2015

15.1.2016 15.1.2016 KPTCL filed a separate

application before CERC on

07.01.2016 seeking time

extension up to 31.05.2017.

Based on the further

communication received from

CERC through the Advocate at

New Delhi a separate petition

was filed on 08.08.2016

before CERC seeking time

extension up to 31.05.2017.

The petition is yet to be listed

for hearing by CERC.

KPTCL also informed that

attending protection audit

observations at all 220 kV and

above voltage class sub stations

is included under R&U project.

The work is awarded to M/s

ALSTOM by issuing LOA on

26.12.2015. M/s Alstom has

completed site survey, finalizing

purchase of materials. Pre

dispatch inspection of materials

at ALSTOM factory premises is

under progress. Supply of

materials and execution of

works at each substation will

start from September 2016.

KSEBL 86/MP/2014

Date of Order :

31.12.2015

31.12.2015

(excepting for

R&M works at

KSEB filed an affidavit dated

20.05.2016 before Hon’ble

CERC seeking further time

extension up to 31.11.2016 for


18.8.2015 Idduki HEP for

which time

extension is up to

31.3.2016)

completion of balance Phase-I

activities, and up to 31.12.2017

for completion of balance

Phase-II activities (except for

Idukki HEP for which the time

extension has been sought up to

31.12.2020) against the CERC

Order dated 18.08.2015 in

respect of petition no:

86/MP/2014.

TANTRANSCO 374/MP/2014

Date of Order :

18.8.2015

30.6.2016 30.11.2016 W.r.t. Phase-I works,

TANTRANSCO informed that

they are in the process filing an

application before CERC


up to March, 2017.

NPCIL (MAPS) 146/MP/2015

Date of Order :

20.02.2014

01.05.2014 01.09.2014 As per the status furnished to

SRPC, one no. of

recommendation pertaining to

providing Y-ph Line CVT’s on

the lines emanating from MAPS

at MAPS is yet to be

implemented.

30.2 From the above, it can be kindly seen that time extensions given to various Constituents

have been completed. As such, following SR-Constituents, viz., APGENCO,

APTRANSCO, TSGENCO, TSTRANSCO, KPCL, KPTCL, KSEB, NPCIL (MAPS),

Spectrum PGL, GMR Barge - Kakinada, Konaseema GPL, APGPCL Vijjeswaram Stage-I

& Stage-II), & LANCO-Kondapalli PL had been requested to kindly approach Hon’ble

CERC for obtaining further time extension for the completion of their respective pending

protection audit works.

30.3 In the TCC meeting the following was noted:

APTRANSCO had informed that maximum points were completed except Event

Loggers. REF at Bommur has been commissioned.

TSTRANSCO had informed that about 90 % of Phase-I has been completed and some

panels are under commissioning. Most of the works of Phase-II were over, some

procurement are awaited and expected to be completed by December 2016.

After hearing KSEBL’s Petition, Hon’ble CERC had sought comments of SRPC &

SRLDC which have been furnished.

TANTRANSCO had informed that they would be approaching Hon’ble CERC for time

extension up to 31.12.2016 & 31.03.2017 for Phase I & II respectively.

TCC had suggested that the entities whose time-lines had elapsed needed to approach

Hon’ble CERC for obtaining time-extension for their respective pending protection audit

works.

30.4 SRPC noted the above and requested entities to approach Hon’ble CERC for obtaining

time extension wherever required.


31. GRID OPERATION

Salient Achievements

Reserve Regulatory Ancillary Services (RRAS) came in operation w.e.f. 12.04.2016.

Efforts put by KPCL to bring back three units and two lines at Sharavathy HEP

within a very short duration (almost 30 -35 days).

SRLDC had developed web based outage coordination system for requisitioning the

OCC approved outages.

KKNPP Unit-1 achieved 100 % PLF in the month of June 2016.

200 MW out of 250 MW Ananthapur Ultra Mega Power project in Andhra Pradesh

was declared on COD on 09.05.2016. NTPC was the developer of the project.

Gazuwaka HVDC Mock Exercise was successfully conducted on 23rd

July-2016.

TN had absorbed record 97.35 MU of Wind generation 16th

August 2016.

31.1 Grid events/highlights during March 2016

Andhra Pradesh met a maximum demand of 7,680 MW on 22.03.2016 which is the

maximum till date.

Kerala met a maximum demand of 3,860 MW on 28.03.2016 which is the maximum till

date.

Puducherry met a maximum demand of 352 MW on 29.03.2016 which is the maximum

till date.

Southern Region met a maximum demand of 40,899 MW on 21.03.2016 which is the

maximum till date.

Kerala met a per day maximum energy consumption of 76.43 MU on 31.03.2016 which

is the maximum till date.

Tamil Nadu met per day maximum energy consumption of 327.02 MU on 22.03.2016

which is the maximum till date.

Puducherry met a per day maximum energy consumption of 7.45 MU on 29.03.2016


CEA vide letter dated 04.04.2016 had informed that 2nd

Unit of Vizag TPP (2x520

MW) of M/s Hinduja Power Corporation Limited of Andhra Pradesh had achieved full

load on 31.03.2016 and declared commissioned.

Yeramarus Unit I of capacity 800 MW of KPCL achieved full load on 29.03.2016.

BTPS Unit III of Capacity 700 MW of KPCL achieved full load on 01.03.2016

Singareni - U1 of TSGENCO test synchronization was carried out on 12th

Mar 2016

achieved full load on 13.03.2016.

SR I, PGCIL vide letter dated 31.03.2016 had informed that consequent to successful

completion of Trial Operation, the following assets under “ Transmission System for

connectivity for NCC Projects, Ltd. (1320 MW) have been put under Commercial

Operation w.e.f 00:00 hrs of 22nd

March 2016 :

NCC Generation Switchyard - Nellore Pooling Station 400 kV (Quad) D/C line.

2 Nos 400 kV line bays at Nellore Pooling Station for termination of NCC

Generation Switchyard-Nellore Pooling Station 400 kV(Quad) D/C line.

Transmission charges for the above assets are payable with effect from 22nd

March 2016.

2nd

Unit stringing on existing 220 kV DC/SC line from 400/220 kV S/S

Mahadevamangalam to 220 kV S/S Palamaneru in Chittur District of ckm 57.11 was

carried out and charged on 01.03.2016 by APTRANSCO.

SR II, PGCIL vide letter dated 31.03.2016 notified that the OPGW communication

links along with associated Communication Equipment and EPABX systems (hot line


speech Communication Systems for Grid Operation) as per the list enclosed under the

project - “Fiber Optic communication System for Central Sector Sub-Stations &

Generating Stations in Southern Region” are successfully commissioned. The above

assets are put into service for commercial operation w.e.f. 31.03.2016.

400 kV Jammangudu-Kurnool D/C line was idle charged on 31st Mar 2016 by

APTRANSCO.

LILO of 400 kV Malkaram-VTPS at Suryapet was first synchronised to grid on 30th

Mar 2016 by TSTRANSCO.

220 kV D/C line from 220 KV Fabcity to 132 kV Mamidipalli SS Length of 19.972

ckm was commissioned on 31.03.2016 by TSTRANSCO.

400 kV LILO VTS-Malkaram (Ckt-I) to Suryapet SS (3.655kM) was commissioned

on 30.03.2016 by TSTRANSCO.

220/132 kV Parigi SS with 1 x 100 MVA Transformer in Rangareddy District was

commissioned on 04.03.2016 by TSTRANSCO.

220 kV SS Shapurnagar in R.R.Dis of 2 x 160 + 1 x 100 existing MVA was

augmented to a capacity of 3 x 160 MVA and was commissioned on 02.03.2016 by

TSTRANSCO.

220 kV SS Tandur in R.R.Dist 2 x 100 existing MVA was augmented to a capacity of

3 x160 MVA and commissioned on 03.03.2016 by TSTRANSCO.

220 kV SS Warangal in Warangal Dist of 1 x 130 + 2 x 100 existing MVA was

augmented to a capacity of 2 x 160 + 1 x 100 MVA and was commissioned on

06.03.2016 by TSTRANSCO.

220 kV SS Budidampadu in Khammam Dist of 2 x 100 existing MVA was

augmented capacity is 1 x 160 + 1 x 100 MVA commissioned on 10.03.2016 by

TSTRANSCO.

220 kV SS Shamshabad in R.R.Dist of 2 x 100 existing MVA was augmented to a

capacity of 3 x100 MVA and was commissioned on 12.03.2016 by TSTRANSCO.

220 kV SS Durshed in Karimnagar Dist of 2 x 160 + 1 x 100 existing MVA was

augmented to a capacity of and was 3 x 160 MVA and was commissioned on


220 kV SS Sadasivpet in Medak Dist of 2 x100 existing MVA was augmented to a

capacity of 1 x 160 + 1 x100 MVA and was commissioned on 18.03.2016 by

TSTRANSCO.

220 kV SS Nirmal in Adilabad dist of 2 x100 existing MVA was augmented to a

capacity of 3 x 100 MVA and was commissioned on 18.03.2016 by TSTRANSCO.

220 kV SS Jagitial in Karimnagar Dist of 2 x 100 existing MVA was augmented to a

capacity of 3 x 100 MVA and was commissioned on 19.03.2016 by TSTRANSCO.

220 kV SS Kalwakurthy in Mahaboobnagar dist of 1 x 160 + 2 x 100 existing MVA

was augmented to a capacity of 2 x 160 + 1 x 100 MVA and was commissioned on


220 kV SS Manuguru in Khammam dist of 1 x 160 + 2 x 100 existing MVA was

augmented to a capacity of 2 x 160 + 1 x 100 MVA and was commissioned on


31.2 Grid events/highlights during April 2016

Andhra Pradesh met a maximum demand of 7,740 MW on 28.04.2016 which is the

maximum till date.

Telangana met a maximum demand of 7,115 MW on 04.04.2016 which is the

maximum till date.

Karnataka met a maximum demand of 9,776 MW on 12.04.2016 which is the

maximum till date


Kerala met a maximum demand of 4,004 MW on 27.04.2016 which is the maximum

till date.

Tamil Nadu met a maximum demand of 15,240 MW on 29.04.2016 which is the

maximum till date.

Puducherry met a maximum demand of 370 MW on 23.04.2016 which is the

maximum till date.

Southern Region met a maximum demand of 41607 MW on 07.04.2016 which is the

maximum till date.

Andhra Pradesh met a per day maximum energy consumption of 169.15 MU on

28.04.2016 which is the maximum till date.

Telangana met a per day maximum energy consumption of 159.62 MU on 05.04.2016


Karnataka met a per day maximum energy consumption of 223.35 MU on 20.04.2016


Kerala met a per day maximum energy consumption of 80.44 MU on 29.04.2016


Tamil Nadu met per day maximum energy consumption of 345.62 MU on 29.04.2016


Puducherry met a per day maximum energy consumption of 7.83 MU on 22.04.2016


Southern Region met a per day maximum energy consumption of 962.01 MU. which

is the maximum till date

Hon’ble CERC had issued CERC (IEGC) Regulations (Fourth Amendment) 2016 on

06.04.2016.

Tamil Nadu had added 0.45 MW in windmill capacity (Private sector).

CEA vide letter dated 03.05.2016 had informed that 2nd

Unit of M/s IL & FS Tamil

Nadu Power Company Limited (ITPCL) (2 x 600 MW) in Tamil Nadu had achieved

full load on 18.04.2016 and declared commissioned.

2nd

Unit of M/s IL & FS Tamil Nadu Power Company Limited (ITPCL) (2x600 MW)

in Tamil Nadu had declared COD from 00:00 Hours of 30.04.2016.

SR I, Powergrid vide letter dated 30.04.2016 had informed that consequent to

successful completion of Trial Operation, the following assets under “Transmission

System for Ultra Mega Solar Park in Anantapur Dist, Andhra Pradesh – Part – A

(Phase –I)” have been put under Commercial Operation w.e.f 00:00 hrs of 28th

April

2016 :

1 No. 500 MVA, 400/220kV Transformer at NP Kunta Pooling Station along

with associated bays and equipment.

LILO of 400 kV Kadapa (Cuddapah) – Kolar S/C line at NP Kunta Pooling

Station.

2 Nos of 220 kV line bays at NP Kunta Pooling Station

Transmission charges for the above assets are payable with effect from 28th

April 2016.

220 kV D/C line from Jurala SS to Lower Jurala Hydro power of 22 ckm was


220 kV SS at Dichpally in Nizamabad Dist of 1 x 160 + 2 x 100 existing MVA

capacity was augmented to a capacity of 2 x 160 + 2 x 100 MVA and was


220 kV SS at Bongiri in Nalgonda Dist of 2 x 100 existing MVA capacity was

augmented to a capacity of 3 x 100 MVA and commissioned on 16.04.2016 by

TSTRANSCO.


220 kV SS at Waddekothapally in Warangal Dist of 2 x 160 + 1 x 100 MVA existing

Capacity was augmented to a capacity of 3 x 160 MVA and was commissioned on


220 kV SS at Miryalguda in Nalgonda Dist of 2 x160 + 1 x 100 existing MVA was

augmented to a capacity is of 2 x 160 + 2 x 100 MVA and was commissioned on


220 kV SS at Renigunta in Chitoor Dist of 3 x 100 MVA was augmented to a capacity

of 2 x100 + 1 x 160 MVA and was commissioned on 01.04.2016 by APTRANSCO.

220 kV SS at Chinakampally in YSR Dist of 1 x 100 MVA was augmented to a

capacity of 1 x 100 + 1 x 160 MVA and was commissioned on 02.04.2016 by

APTRANSCO.

220 kV SS at Kondapally in Krishna Dist of 3 x100 MVA Capacity was augmented to

a capacity of 2 x 100 + 1 x 160 MVA and was commissioned on 25.04.2016 by

APTRANSCO.

31.3 Grid events/highlights during May 2016

Tamil Nadu had added 12 MW in windmill capacity (Private sector).

220 kV SS at Siddipet in Medak Dist of 2 x 100 existing MVA capacity was

augmented to a capacity of 1 x 160 + 2 x 100 MVA and was commissioned

on13.05.2016 by TSTRANSCO.

220 kV SS at Minpur in Medak Dist of 1 x 160 + 2 x100 existing MVA capacity was

augmented to a capacity of 2 x 160 + 1 x 100 MVA and commissioned on 14.05.2016

by TSTRANSCO.

220 kV SS at Narketpally in Nalgonda Dist of 1 x 160 + 2 x 100 MVA existing

Capacity was augmented to a capacity of 2 x 160 +1 x 100 MVA and was


220 kV SS at Warangal in Warangal Dist of 2 x 160 + 1 x 100 MVA was augmented

to a capacity is of 3 x 160 MVA and was commissioned on 26..04.2016 by

TSTRANSCO.

31.4 Grid events/highlights during June 2016

Tamil Nadu had added 6 MW in windmill capacity (Private sector) during June 2016.

SGPL vide letter dated 30.05.2016 informed that Unit I of Sembcorp Gayatri Power

Ltd (SGPL) 660 MW was synchronized with Grid at 19:26:52 Hrs on 26th

May 2016.

220 kV RTPP Chinnakampally 3rd

& 4th

circuit in YSR Dist of 121ckm was

commissioned on 16.06.2016 by APTRANSCO.

2nd

Circuit from 400 kV Gajwel to loc No 34 of 132 kV line from Gajwel to Thumki

Bolarum line of 10 ckm was commissioned on 08.06.2016 by TSTRANSCO.

220 kV SS at Budidampadu in Kammam Dist(9hrs Agricultural) of 1 x 100+1x160

existing MVA capacity was augmented to a capacity of 2 x160 MVA and


220 kV SS at Kondamallepally in Nalgonda Dist of 3 x 100 MVA existing Capacity

was augmented to a capacity of 4 x 100 MVA and was commissioned on 13.06.2016 by

TSTRANSCO.

220 kV SS at Jurala in Mehaboobnagar Dist (9 hrs Agricultural) of 2 x100 MVA

existing Capacity was augmented to a capacity is of 3 x 100 MVA and was


220 kV SS at Moulali in Ranga Reddy Dist of 2 x 80 + 1 x 50 MVA existing Capacity

was augmented to a capacity of 3 x 80 + 1 x 50 MVA and was commissioned on


125 MVAR Vijayawada Bus reactor – III was charged by PGCIL on 19.06.2016.


NP Kunta ICT – II & III (400/220 kV, 500 MVA each) charged by PGCIL on

02.07.2016 & 11.07.2016.

Udumalpet – Pallakad SPS implemented by effect from 20.06.2016 by KSEBL.

Jammalamadugu – Kurnool commissioned on 29.06.2016 by APTRANSCO.

SR I, Power grid vide letter dated 11.07.2016 informed that consequent to successful

completion of Trial Operation, the following assets under “Transmission System for

Ultra Mega Solar Park in Anantapur Dist, Andhra Pradesh – Part – A (Phase –I)” have

been put under Commercial Operation w.e.f 00:00 hrs of 11th

July 2016 :

2 No. 500 MVA, 400/220kV Transformer at NP Kunta Pooling Station along

with associated bays and equipment.

1 no. 125 MVAR 420kV Bus Reactor along with associated bays and

equipment.

SR II, Power grid vide letter dated 22.06.2016 informed that consequent to successful

completion of Trial Operation, the following asset under transmission system

associated with “System strengthening – XX in Southern Regional Grid” have been put

under Commercial operation with effect from 00:00 hours of 22nd

June 2016:

1 X 500 MVA, 400/220/33kV ICT at Malekuttaiayur Substation along with

associated bays and equipments.

Transmission charges for the above assets are payable with effect from 22nd

June 2016.

31.5 Grid events/highlights during July 2016

220 kV DC line with Twin Moose from 400kV Urvakonda SS to 220kV Vajrakarur SS

in Ananthapur Dist of 32 ckm was commissioned on 14.07.2016 by APTRANSCO.

100 MVA capacity Transformer at 220 kV SS at Vajrakarur in Ananthapur Dist was

commissioned on 14.07.2016 by APTRANSCO.

220 kV SS at Nagjari in Chittoor Dist of 2 x 100 MVA existing Capacity was

augmented to a capacity of 3 x 100 MVA and was commissioned on 15.07.2016 by

APTRANSCO.

220 kV SS at Pedurthy in Visakapatnam Dist of 1 x 160 + 2 x 100 existing MVA was

augmented to a capacity is of 2 x 160 + 1 x 100 MVA and was commissioned on

31.07.2016 by APTRANSCO.

220 kV DC line from proposed 220kV Parigi to 220/132kV Kosigi in Mehaboobnagar

Dist of 80.092 ckm was commissioned on 4.07.2016 by TSTRANSCO.

220 kV features at 132/33kV Kosigi SS in Mehaboobnagar Dist of 1 x 100 kV ratio

capacity of 100 MVA and was commissioned on 04.07.2016 by TSTRANSCO.

SR II, PGCIL vide letter dated 01.08.2016 had informed that consequent to the

successful completion of Trial Operation, the following asset under “Common

Transmission Scheme associated with ISGS Projects in Nagapattinam / Cuddalore area

of Tamil Nadu – Part – A1 (a)” in Southern Region have been put under Commercial

Operation w.e.f 00:00 hrs of 01st August 2016 in terms of Clause 4 of CERC (Terms

and Conditions of Tariff Regulations 2014).

1x125 MVAR Bus Reactor at 400 kV Nagapattinam GIS

SR I, PGCIL vide letter dated 28.07.2016 had informed that OPGW Communication

links along with associated communication equipment under the project “Establishment

of Fiber Optic Communication System for Central Sector stations project of SR” are

successfully commissioned. These assets have been put under Commercial Operation in

terms of clause 4 of CERC(terms and Conditions of Tariff) Regulation 2014.


31.6 Installation of Shunt Capacitors

Progress of installation of capacitors by the constituents during the year

2016-17 is furnished in the Table below:

(Figures in MVAR)

State Requirement

for 2016-17

Installed during the year 2016-

17

Andhra Pradesh 239.8 0

Telangana 115.20 0

Karnataka 56.31 0

Kerala 10.00 0

Tamil Nadu 51.00 0

Puducherry 16.80 0

31.7 Demand Variation (Peak Vs Off-peak)

Issue regarding large variation between minimum and maximum demands has been under

the consideration of TCC/SRPC. The issue is also being discussed in the monthly

Meetings of OCC. Following was observed with regard to the period from March 2016 to

July 2016:

Descripti

on

Minimum to Maximum Demand Variation %

Andhra

Pradesh Telangana Karnataka Kerala Tamil Nadu Puducherry

Southern

Region

March 2016

Highest 28.75 22.58 19.41 34.09 27.33 32.66 26.75

Date (Day) 29.03.2016

(Tuesday)

19.03.2016

(Saturday)

13.03.2016

(Sunday)

27.03.201

6 (Sunday)

14.03.2016(

Monday)

03.03.2016

(Thursday)

29.03.2016

(Tuesday)

Lowest 14.29 8.89 10.53 25.18 10.16 14.90 16.32

Date

(Day)

27.03.2016

(Sunday)

12.03.2016

(Saturday)

18.03.2016

(Friday)

11.03.201

6 (Friday)

27.03.2016

(Sunday)

13.03.2016

(Sunday)

03.03.2016

(Thursday)

Average 19.86 15.12 15.66 30.71 18.59 24.83 22.79

April 2016

Highest 31.81 24.23 22.73 32.87 23.37 35.43 14.14

Date

(Day)

08.04.2016

(Friday)

17.04.2016

(Sunday)

09.04.2016

(Saturday)

15.04.2016

(Friday)

11.04.2016(

Monday)

11.04.2016

(Monday)

11.04.2016

(Monday)

Lowest 9.86 11.44 12.89 24.90 9.16 13.63 5.58

Date

(Day)

06.04.2016

(Wednesday)

24.04.2016

(Sunday)

14.04.2016

(Thursday)

28.04.2016

(Thursday)

03.04.2016(

Sunday)

14.04.2016

(Thursday)

08.04.2016

(Friday)

Average 18.83 16.77 16.66 28.55 14.54 22.54 10.61

May 2016

Highest 31.67 67.12 42.34 42.80 37.65 49.70 28.43

Date

(Day)

12.05.2016

(Thursday)

06.05.2016

(Friday)

20.05.2016

(Friday)

20.05.2016

(Friday)

17.05.2016

(Tuesday)

16.05.2016

(Monday)

20.05.2016

(Friday))

Lowest 14.85 14.82 16.83 24.33 9.24 13.25 12.51

Date

(Day)

17.05.2016

(Tuesday)

07.05.2016

(Thursday)

17.05.2016

(Tuesday)

14.05.2016

(Saturday)

01.05.2016(

Sunday)

08.05.2016

(Sunday)

10.05.2016

(Tuesday)

Average 22.34 25.87 22.45 32.47 19.45 25.14 16.60


June 2016

Highest 29.96 34.90 36.82 47.26 30.31 34.63 34.78

Date

(Day)

02.06.2016

(Thursday)

07.06.2016

(Tuesday)

03.06.2016

(Friday)

30.06.2016

(Thursday)

24.06.2016

(Friday)

24.06.2016

(Friday)

30.06.2016

(Thursday)

Lowest 14.69 13.75 20.53 28.65 12.31 17.72 14.48

Date

(Day)

21.06.2016

(Tuesday)

12.06.2016

(Sunday)

05.06.2016

(Sunday)

10.06.2016

(Friday)

05.06.2016

(Sunday)

05.06.2016

(Sunday)

19.06.2016

(Sunday)

Average 19.76 22.72 27.48 37.11 20.97 26.76 21.18

July 2016

Highest 33.40 31.86 36.93 49.27 29.35 50.51 27.08

Date

(Day)

10.07.2016

(Sunday)

12.07.2016

(Tuesday)

29.07.2016

(Friday)

03.07.2016

(Sunday)

25.07.2016

(Monday)

21.07.2016

(Thursday)

01.07.2016

(Friday)

Lowest 14.92 15.95 23.08 34.29 11.56 16.24 12.15

Date

(Day)

22.07.2016

(Friday)

03.07.2016

(Sunday)

16.07.2016

(Saturday)

17.07.2016

(Sunday)

17.07.2016

(Sunday)

23.07.2016

(Saturday)

17.07.2016

(Sunday)

Average 21.60 25.14 28.71 39.21 21.38 26.90 19.81

Note: Highest &lowest figures for the month have been computed based on the daily values.

31.8 Frequency of Operation of Southern Grid

Frequency of operation of the Southern Grid for the period under review is furnished

below please:

Month

Percentage of time when frequency (Hz) was

Month

Avg.

freq.

Less

than

49.5

49.5

to

49.7

49.7

to

49.9

49.9

to

50.0

50.0

to

50.05

50.05

to

50.20

More

than

50.20

Within

IEGC

range

49.9 to

50.05

March 2016 0.00 0.00 10.79 42.66 26.84 19.56 0.15 69.50 49.99

April 2016 0.00 0.07 14.21 43.89 25.63 16.11 0.09 69.52 49.98

May 2016 0.00 0.03 7.51 39.28 30.67 22.20 0.31 69.95 50.00

June 2016 0.00 0.04 8.31 43.35 29.93 18.34 0.03 73.27 49.99

July 2016 0.00 0.00 4.58 38.70 33.52 23.11 0.08 72.22 50.01

During the period under review, caution / violation messages (Annexure- XXIX) were

issued to the constituents by SRLDC. Matter regarding overdrawal at low frequency by

some constituents is being regularly deliberated in the OCC forum. Utilities were

requested to kindly adhere to Regulations in this regard.

31.9 Reasons for demand -supply gap and its variation:

31.9.1 In 4th

Meeting of NPC held on 10.12.2015 (MoM dated 1.1.2016) the following had been

noted:

Reason for demand-supply gap needed to be clearly mentioned to reflect true picture

of power supply position in different states and also to invite attention of various


agencies including policy makers to the specific problem areas in the power sector

for suitable solution. It was requested to RPCs to advise the states in their respective

regions to intimate broad break-up of demand-supply gap due to various reasons, or

at least, the main reason(s) for demand-supply gap in each month. It was suggested

that this matter could be discussed in the OCC forum of RPCs on regular basis and

the reasons for demand-supply gap ascertained from the States therein and

communicated to CEA.

RPCs agreed to take action accordingly and furnish above information to CEA along

with the power supply position related data every month.

31.9.2 In the 29th

Meeting of SRPC, SRPC had informed that the reasons for demand-supply

gap had been sought to reflect true power supply position in the states. Only Kerala

was furnishing the information, other states/UT are kindly requested to furnish the

details along with PSP data.

TCC deliberations

MS, SRPC had stated that the information was being sought by MoP/CEA. Though

Surplus power was available, reasons for deficits such as transmission constraints,

distribution constraints, financial constraints etc needed to be elucidated.

CEA had stated that at times they are not able to furnish real reasons for shortages

whenever the same was sought by MoP. In Vidhyuth Pravah App it could be seen that

power is available and also at cheaper rate. The reasons for power not being supplied

were to be understood. States were to come forward with exact reason of demand not

met whether due to transmission or financial constraints or it being a one off incident.

Constituents were requested to kindly furnish details to SRPC Secretariat in the format

already circulated.

SRPC deliberations

31.9.3 Director (GM), CEA said that the data being furnished by SRPC for SR constituents was

very reliable. However during shortage conditions at times, MoP desired exact reason of

shortages like transmission constraint or some other financial reason etc. In certain states,

power was not being supplied due to financial limitations. Vidhyuth Pravaah App showed

power availability in different areas and consumers were raising several questions in

social media to MoP.

32. THOROUGH REVIEW OF ALL THE DRAWAL POINTS OF STATES FOR

DRAWAL COMPUTATIONS

32.1 SRPC vide letter dated 30.10.2015 had suggested a methodology for reviewing the Touch

Points for drawl computations. The issue was further discussed in the 31st CCM wherein the

following was noted:

SRPC and SRLDC would be reviewing node points for installation of SEMs as per CEA

Metering Regulations and would post the details of location ID and formulas on SRPC

website. The same was posted in the SRPC website.

The comments/feedback of the constituents was to be sent to SRPC Secretariat within

two/three weeks’ time to finalize the methodology.


TCC deliberations

APTRANSCO had stated that they had furnished some comments which needed to be

considered. MS, SPRC had stated that touch points were being reviewed to have a

uniform methodology and that the comments of APTRANSCO would be taken into

consideration.

33. TPCIL REQUEST TO EXEMPT DEVIATION CHARGES

33.1 TPCIL vide letter dated 07.01.2016 had requested for to consider the event of 30.12.215

as “force majeure” during CTU system outage (ISTS) and revise the deviation account for

the week 28-Dec-15 to 03-Jan-16.

33.2 The issue was deliberated in the 31st CCM wherein it was noted a Working Group of NPC

was meeting shortly to recommend the methodology for ‘Treatment of Bilateral short term

and collective transaction in case of grid disturbances’.

33.3 In the 5th

Meeting of NPC held on 08.04.2016, it was noted that the working group would

meet again to arrive at consensus on the methodology. Finalized methodology would be

communicated put up to NPC in the next meeting for approval.

34. SCHEDULING OF NTPC RAMAGUNDAM SOLAR POWER PLANT (10 MW)

34.1 A Special Meeting was held on 17th

November 2015, to facilitate scheduling by SRLDC

and identifies certain prerequisite criteria to be ensured by NTPC. The issue is being

regularly followed up in the OCC Meetings. NTPC to kindly ensure technical/regulatory

requirement to enable scheduling by SRLDC.

TCC deliberations

NTPC had informed that they were envisaging generation from the project to Telangana

fully by swapping with some other project. Subsequently, they would approach MoP/

CEA for unallocated power.

SRPC deliberations

34.2 Regional ED, NTPC informed that any decision regarding scheduling domain would be as

per Regulations. For a small plant of 10 MW, it was not appearing feasible for two states

have a share in it. They were in discussion with Andhra Pradesh and Telangana in this

regard. Some power could be given to Andhra Pradesh from other NTPC Solar plant (NP

Kunta) while this plant could be dedicated solely to Telangana.

34.3 MS, SRPC stated that in that case, MoP may need to be approached for necessary

amendment with regard to unallocated power linked with this project.


35. GRID STUDY COMMITTEE (TASK- 2) AUDIT PROGRESS DETAILS

35.1 As per the MoP order dated 16.07.2014, M/s Tractebel Engineering (TE) has been

appointed as the Consultant to conduct the study/ analysis of National Grid. The terms of

reference of the Consultant are as follows:


a) To Review the status of implementation of the recommendations of the Enquiry

Committee (Task-1).

b) Carrying out actual protection audit check for 10% (76 nos.) of 762 substations across

the country to address the gaps, in consultation and collaboration with states and all

stakeholders as per present and future requirements (Task-2).

Task-1 for SR-Constituents was already completed by the first week of September, 2015.

The draft report on Task-1 prepared by the Consultant was discussed in the third Grid

Study Committee (GSC) meeting held on 18th

November, 2015. Subsequently, the

feedback of the SR-Constituents was furnished to the Consultant by the last week of

November, 2015. The final report on TASK-1 by the Consultant is expected soon.

Under Task-2, 15 Stations have been identified from SR for protection audit-check by the

Consultant. Various inputs (relating to relay settings, protection parameters, etc.) sought by

the Consultant in this regard have been collected from respective SR-Constituents, and

furnished to the Consultant. Based on the data furnished, Consultant is to provide a set of

recommended settings covering various relays for each of the 15 Stations, and to carry out

physical protection audit of the same. The audit activities proposed to be carried out by the

Consultant during audit-period would cover verification of the status of each CBs, VTs and

CTs and various interlocks in the substation, verification of the relay settings implemented,

checking the availability of Auxiliary supply, etc.

In this regard, the protection-audit of all 15 stations from SR had been completed as given

below:

Sl. No. Name of the Station Period of Audit

1 Hosur SS of PGCIL (SR-II) 9-11 December, 2015

2 Gazuwaka SS of PGCIL (SR-I) 28-30 December, 2015

3 Alamathy SS of TANTRANSCO 4-6 January, 2016

4 Tirunelveli SS pf PGCIL (SR-II) 8th,

,9th and 11

th January, 2016

5 Edamon SS of KSEB 18-20 January, 2016

6 NLC TPS-II Station 8–10 February, 2016

7 Nelamangala SS of KPTCL 8–10 February, 2016

8 Gooty SS of PGCIL (SR-I) 12th,13

th and 15

th February, 2016

9 Kurnool SS of APTRANSCO 16–18 February, 2016

10 Ramagundam STPS of NTPC 18-20 February, 2016

11 Kothagudem TPS of TSGENCO 14-16 March, 2016

12 Kaiga APS of NPCIL 4-6 April, 2016

13 Guttur SS of KPTCL 4-6 May, 2016

14 Raichur TPS of KPCL 8-10 June, 2016

15 Nagjheri HPS of KPCL 14-16 July, 2016

Draft report on Task-2 by the Consultant is awaited. Based on their audit, the Consultant

had given certain general observations w.r.t. each station, and the final set of

recommendations would be provided by M/s Tractebel Engineering in their final report on

Task-2, which is expected by September/ October, 2016.

35.2 SRPC noted the above


36. IMPLEMENTATION OF PROTECTION SUITE / PROTECTION MANAGEMENT

SYSTEM (PMS) FOR SOUTHERN REGION

36.1 In the 26th

SRPC meeting held on 20th

December, 2014 at Visakhapatnam, SRPC had

approved the proposal to procure Protection Suite (Protection Management System) that

comprises Web based management software and protection setting calculation tool through

PSDF funding. In this regard, steps have been initiated to procure Protection Suite through

PSDF funding. A total of 35 licenses would be procured for the Constituents of Southern

Region.

36.2 After obtaining approval for PSDF funding, tendering process for executing Protection Suite

would be initiated. For evaluating the technical and financial bids that would be received, a

Committee comprising members from SR- Constituents would later be constituted with

approval from Chairperson, SRPC.

TCC deliberations

TSTRANSCO had requested for inclusion of 132kV SS stating that until downstream

system is mapped it would not give complete picture. SRPC Secretariat had clarified

that system is capable of integration up to 11 kV also but manpower requirements had

been assessed up to 220 kV level and hence downstream may have to be developed by

respective entities. However, it was noted that possibility of including 132 kV SS would

be explored.

TCC had noted that presently, the proposal of PMS for PSDF funding is under

evaluation by the Appraisal Committee of PSDF.


37. OVER VOLTAGE RELAY (OVR) GRADINGS FOR 400 KV TRANSMISSION

LINES OF THE SOUTHERN REGION

37.1 In the past one year, a number of new 400 kV transmission lines have been added to SR

Grid in addition to reconfiguration (including LILO) works of the existing 400 kV

transmission lines. In this regard, a comprehensive exercise for OVR grading 400 kV

transmission lines of SR (existing as on March, 2016) has been carried out, and revised

OVR Gradings proposed to be adopted for these lines (along with study results) had been

circulated to all Constituents for any modifications/ omissions/ comments vide SRPC letter

dated 24.03.2016.

37.2 Final OVR gradings to be adopted for 400 kV lines after incorporating Constituents'

comments have been issued for implementation vide SRPC letter dated 18.04.2014. OVR

gradings have also been kept in SRPC website for easy reference.

37.3 In the TCC meeting, it was noted that all the Constituents had confirmed implementation of

OVR gradings as applicable to their respective systems in the 54th

meeting of PCSC held on

28th

April, 2016.


38. PROTECTION SYSTEM ANALYSIS GROUP (PSAG-15) MEETING HELD AT

NTPL, TUTICORIN

38.1 As decided in the 52nd

Meeting of the Protection Coordination Sub-Committee (PCSC-52)

held on 30.03.2016, a team of PSAG-15 comprising Officials from SRPC, SRLDC, PGCIL

(SRTS-II), KPTCL, and TANTRANSCO visited NTPL, Tuticorin on 12th

April, 2016 to


make an in-depth analysis of the circumstances that led to the GD’s on 14th

and 15th

March,

2016, and suggest suitable actionable measures to avoid recurrence of such incidents in

future.

38.2 The recommendations given by the Committee and their compliance by NTPL as intimated

vide their letter dated 17.05.2016 is given below:

Sl.

No.

Recommendation Action Taken by NTPL (intimated

vide their letter dated 17.05.2016)

1 a) To examine the feasibility of using

relays of different make for Main-I and

Main-II line protection on all the lines

emanating from NTPL, and implement

accordingly.

b) To examine the feasibility of providing

line differential protection on all 400 kV

lines emanating from NTPL after it is got

connected by the PGCIL’s fibre optic

back-bone.

Main I & II relays are of Siemens make

having different versions. However,

feasibility of providing different makes

for Main I & II relays with line

differential protection will be taken up

in future in consultation with PGCIL

for provision of overhead FO cable.

In this regard, PGCIL informed that as

part of the on-going project to connect

all its substations and ISGS stations

with fibre optic network, NTPL would

also be covered.

2 To consider mutual compensation factors

for distance protection at the earliest to

avoid mal-operations associated with

coupling phenomenon.

Will be carried out when lines

emanating from NTPL become

independent in July 2016, after the

CEPL – Tuticorin PS separate lines are

made ready.

3 To revise Pole Discrepancy Relay timing

from the present 2.5 sec to 1.5 sec.

Already carried out for NTPL- Coastal

line and NTPL-Pooling station feeders.

4 To perform CRM/ DCRM test on all

breakers, and take appropriate steps to

ensure their healthiness.

LC will be availed in second week of

June, 2016 for testing of breakers.

CRM and timing tests will be carried

out on breakers and results will be

compared with the commissioning

report.

5 Main-I relay in NTPL-Pooling station

feeder has mal- operated on 02 .05.2016

and the matter to be referred to OEM for

necessary action including replacement of

relays.

Main-I relay output contacts have been

changed as temporary measure in

NTPL - Tuticorin Pooling station

feeder. LC will be availed in the second

week of June, 2016 for complete testing

of Main-I Relay and the same will be

re-configured/replaced in consultation

with OEM.

6 The Distance Protection Zone-settings

adopted by NTPL at their end for NTPL-

LC will be availed in the second week

of June, 2016 for relay testing and


TTNPS and NTPL-CEPL lines have been

considered with a view to verify whether

they are in line with Ramakrishna

Committee guidelines. In this regard, the

existing Zone-settings, and new Zone-

settings calculated as per Ramakrishna

Committee general guidelines have been

made available to NTPL for adoption after

suitable examination.

implementation of resistive reaches in

Main I & II relays of both the feeders as

per recommendation.

7 To take concrete steps to commission the

second set of battery bank and battery

charger at the earliest for reliable PLCC

communication.

Procurement action is being initiated.

38.3 In the SRPC meeting, concerned entities were requested to comply with the

recommendations.

39. SPECIAL MEETING ON ISSUES RELATING TO RECENT GRID

DISTURBANCES IN GAJUWAKA – SIMHADRI - KALPAKA CORRIDOR HELD

ON 04TH

MAY, 2016 AT SRPC, BENGALURU

39.1 A Special Meeting was held on 4th

May, 2016 at SRPC Secretariat, Bengaluru to deliberate

on the issues/ factors that led to recent disturbances in Gajuwaka – Simhadri - Kalpaka

corridor which resulted in trippings of various 400 kV interconnected lines, and finally

culminated in Grid Disturbances at Gajuwaka SS (PGCIL-SRTS1), Vizag SS

(APTRANSCO), and Kalpaka SS (APTRANSCO) during 24-26 April, 2016.

The following actionable measures/steps had been finalised in the Meeting:

Line patrolling protocol & maintenance procedures to be adhered.

Insulator replacement to be carried out up to the firmed up distance.

Hot-line/ Cold-line washing of Insulators & attending to hot-spots.

Silicon Insulator Coatings.

Reducing emissions during commissioning tests of new generating units.

Ensuring supply reliability to Railway Traction network of North Coastal Andhra

Pradesh.

In addition, following protection-specific recommendations have also been given:

Provision of Line differential Protection on all 400 kV transmission lines

interconnecting Gajuwaka SS (PGCIL-STRS1), Simhadri STPP (NTPC), Kalpaka SS

(APTRANSCO), and Hinduja TPS (HNPCL).

Ensuring healthiness of PLCC & Carrier-aided communication.

Provision of GPS/ Time synchronization facility in all 220 kV & above substations/

generation switchyards in Gajuwaka – Simhadri – Kalpaka corridor.

Furnishing of tripping details in compliance of Regulation 5.2 (r) of IEGC.

39.2 In the Meeting, SRPC was appraised of the action taken by the Constituents [PGCIL (SR-I),

APTRANSCO, NTPC-Simhadri, HNPCL] (Details at Annexure-XXX). Concerned

constituents were requested to comply with the recommendations.


40. SPECIAL MEETING ON PENDING PROTECTION ISSUES OF M/S KPCL HELD

ON 03.06.2016 AT SRPC, BENGALURU

40.1 A Special Meeting was held on 03rd

June 2016 in SRPC Secretariat, Bengaluru to deliberate on

pending protection issues of M/s KPCL. Certain issues were observed to be occurring

recurrently at their major generating stations such as 400/ 220 kV Raichur TPS and 220 kV

Nagjheri PH. As regards the recurring grid disturbances at Nagjheri PH, specific actionable

measures/ recommendations w.r.t. the following issues have been proposed:

Line maintenance issues

SPS Modification at Nagjheri PH

Revising GT back-up protection settings appropriately at Nagjheri PH

Putting 220 kV Nagjheri-Kodasalli lines into service

KPTCL was further recommended to actively undertake re-conductoring (with HTLS

type of conductors) of 220 kV Nagjheri – Ambewadi D/C line, 220 kV Ambewadi –

Narendra D/C line, 220 kV Nagjheri – Kodasally D/C line, 220 kV Kaiga-Kodasally

S/C line and furnish an action plan for implementing the same.

KPCL had also been recommended to undertake the following remedial measures to avoid

breaker flashovers:

Replacing all porcelain insulators with composite insulators

Carrying out hot-line water washing of all insulators on regular basis.

Applying Room Temperature Vulcanizing (RTV) Silicone high voltage insulator

coatings to all bus-connected ceramic insulators of equipment like CT, PT, CB, Isolators

etc.

To take steps to provide dedicated breaker flashover protection to all breakers at Raichur

TPS at the earliest.

Auto-Reclosure scheme implementation on all 220 kV lines emanating from Kali

Complex

Line differential protection for 400 kV Raichur-Raichur TPS line-1&2 and 400 kV

Raichur-YTPS and in future lines from Bellary pooling station to nearby generating TPS

as frequent over-reach is being observed with distance protection relays.

D.R and station event logger to be triggered with operation of Main and Back-up

protections of transmission line/ generator /bus-bar protection with proper time

synchronization for performing proper analysis.

Integrity test for Station earth mats in KPCL stations

40.2 In the meeting, SRPC was apprised of the action taken Action taken by the Constituents

(Details at Annexure-XXXI). Concerned constituents were requested to comply with the

recommendations.

41. REVIEW OF ISLANDING SCHEMES OF SOUTHERN REGION

41.1 There are four Islanding Schemes functional in the Southern Region. However, since their

implementation in 2014, number of network changes (additions/ deletions/ reconfigurations

of transmission elements & generators) have taken place in the grid.


41.2 In this regard, a comprehensive exercise of reviewing existing Islanding Schemes

incorporating adverted changes has been carried out. Suitable inputs based on extensive

consultation with the concerned Constituents have been duly factored into in the process.

Document containing the reviewed Islanding Schemes along with the relevant schematics

and necessary system studies has been kept on SRPC website for easy reference.

41.3 Concerned Constituents as given below had been requested vide SRPC letter dated

18.07.2016 to kindly initiate steps to implement the reviewed Islanding Schemes by

appropriately configuring the frequency settings of the transmission lines/ ICT’s/ generators

as brought out in the document so that they get tripped at the Islanding frequency of 47.9

Hz.

Name of the

Islanding

Scheme (IS)

Constituents responsible for configuring frequency settings

Hyderabad IS

TSTRANSCO, PGCIL (SRTS-I), NTPC (Ramagundam)

Chennai IS

TANTRANSCO, TANGEDCO, PGCIL (SRTS-II) Neyveli IS

TANTRANSCO, TANGEDCO, NLC, PGCIL (SRTS-II), KSEB

Kudankulam IS

TANTRANSCO, TANGEDCO, PGCIL (SRTS-II), KSEB, CEPL,

STERLITE, IBPTL

(TANTRANSCO is requested to kindly intimate CEPL, STERLITE

and IBPTL in this regard)

TSTRANSCO, TANTRANSCO and KSEBL in their capacity as STU of their respective

states had also been requested to ensure that all island-participating generators are capable

of FGMO/ RGMO and House-load operation.

41.4 In the Meeting, SRPC was apprised of the following implementation status:

PGCIL (SR-I), PGCIL (SR-II), TANTRANSCO, TANGEDCO, and KSEB had

confirmed implementation of above islanding schemes by appropriately configuring

frequency settings of feeders/ ICT’s/ generators in their respective control areas.

NLC vide their mail dated 23.08.2016 had informed that they had implemented the

requisite frequency settings on the Pugalur feeder emanating from NLC TPS-II. The

same on Pugalur feeder emanating from NLC TPS-II Expn. would be done after

procuring a new UFR by 25.09.2016.

NTPC vide their mail dated 23.08.2016 had informed that frequency settings of the

island-forming feeders emanating from RSTPS had been carried out but with a time

delay of 100 msec (the minimum possible setting with the existing UFR’s), since

existing UFR’s did not have provision to provide for instantaneous tripping. It was also

informed that new UFR’s with provision for instantaneous tripping would be procured

and commissioned in two months time.

TSTRANSCO informed that frequency settings of the Island-forming feeders at 220 kV

& above and some at 132 kV level had been properly configured. However, on some of

the 132 kV feeders the same had been done with the minimum possible time setting

(100 msec) allowed by the UFR. It was also informed that new UFR’s with provision

for instantaneous tripping would be procured and commissioned soon on the relevant

132 kV feeders.


42. PROTECTION SYSTEM ANALYSIS GROUP (PSAG-16) MEETING HELD AT

AMBEWADI SS HELD ON 18.07.2016

42.1 There was a grid disturbance at 220 kV Ambewadi SS of KPTCL on 24th

June, 2016, during

which the fault current had been observed to be fed for about 5 sec, and caused damage to

the distance relay Ponda-II line. It was also observed that the newly commissioned auto-

recloser had not operated as intended during the incident.

42.2 Accordingly, it a PSAG-16 meeting was held on 18th

July, 2016 at Ambewadi SS to

investigate the cause of delayed clearance of fault and verify the healthiness of other

protection systems in place at Ambewadi SS in the context of above grid disturbance.

42.3 The Committee after analysing the reasons for delayed fault clearance and reviewing the

status of R&U works of Ambewadi SS, finalised the following recommendations for

implementation:

Reasons for SOTF non-operation during the second fault to be investigated, and if

required, its settings shall be suitably revised for correct operation.

The settings of back-up protections (O/C & E/F relays) at Narendra and Nagjheri ends

on the Ambewadi – Narendra and Ambewadi – Nagjheri lines for a typical fault on 220

kV lines emanating from Ambewadi shall be suitably revised so that they operate with

minimum possible time allowed by their respective I-t (current-time) characteristics.

For this, the use of IDMT characteristics may be explored to be in the fitness of the

things.

To go for immediate replacement (for deteriorated conductors) / strengthening of the

existing earth-mat on war-footing basis to avoid further failure of the equipments &

interruptions of power supply to the consumers as brought out in the KPTCL report

dated 19.04.2014.

The R&U works covering LBB protection, Busbar protection, GPS provision, Main-II

protection to be completed without further delay in the time-lines stipulated by Hon’ble

CERC.

Both the buses (Bus I & Bus II) to be made operational with bus-coupler in service.

Auto-reclose feature to be provided for all 220 kV feeders emanating from Ambewadi

SS.

Line CVT’s to be provided in all three phases for all 220 kV lines

Two sets of battery-banks and chargers to be provided for both protection (220 V) and

communication (48 V) applications.

Redundancy in PLCC communication to be provided by providing two channels for

both protection and speech for each circuit.

All breakers and substation equipment to be properly maintained. CB replacement

works may be undertaken wherever required.

Care to be taken to maintain proper upkeep of substation by regularly undertaking

cutting of weeds, grass & unwanted vegetation growth, esp. in the switchyard area.

42.4 In the Meeting, SRPC was apprised of the action taken by the Constituents (Details at

Annexure-XXXII). Concerned constituents were requested to comply with the

recommendations.


43. PENDING IMPLEMENTATION OF RECOMMENDATIONS OF PROTECTION

COORDINATION SUB-COMMITTEE (PCSC) OF SRPC

The recommendations given in various PCSC meetings to SR-Constituents have been

regularly sent to respective Constituents for implementation. Concerned constituents were

requested to kindly comply with the Recommendations.

In the SRPC meeting, concerned entities were requested to kindly initiate action.

44. STUDY PROGRAMME ON THE INTEGRATION OF RENEWABLE ENERGY

RESOURCES INTO THE GRID

The proposal had been discussed in the Techno-Economic sub group of PSDF on

27.05.2016. Modifications based on the observations had been communicated to the sub

group on 13.07.2016.

In the SRPC meeting, it was noted that the proposal would be placed before the Appraisal

Committee.

45. IEGC, FOURTH AMENDMENT REGULATIONS 2016- TECHNICAL MINIMUM

OF GENERATORS / COMPENSATION PROCEDURE FOR SHR & AEC

4th

Amendment to IEGC had been brought out by Hon’ble CERC in which Technical

Minimum of 55 % of MCR/IC and compensation for SHR / AEC for low unit loading had

been envisaged. Compensation Procedure (SRPC) and the Operating Procedure for RSD

(NLDC) had been deliberated in OCC/CC/Special meeting (30.05.2016) / VC (20.06.2016).

Compensation Procedure has been finalized by SRPC Secretariat and uploaded in the

website and the same would be fine tuned with feedback from other RPCs. NLDC is in the

process of finalizing the Operating Procedure for RSD.


46. SCHEDULING/OPERATIONAL ISSUES IN RESPECT OF NP KUNTA UMSPPS – 1

46.1 A Meeting on scheduling/operational issues in respect of NP Kunta Ultra Mega Solar

Power Project Stage – 1 (250 MW) at Ananthapur in Andhra Pradesh was held at SRPC,

Bengaluru on 02.05.2016. (MoM is available at SRPC web site).

46.2 APSLDC had given consent and is scheduling the NP Kunta UMSPPS-1 as the installed

capacity criteria of IEGC to be scheduled by SRLDC had not been met. Other actionable

points need to be ensured (as enumerated in the MoM) by the concerned entities to enable

smooth transfer of scheduling responsibility to SRLDC as and when it takes place.


47. COMMERCIAL COMMITTEE ISSUES

47.1 The following issues were discussed in the 31st CC meeting and brought to the attention of

SRPC/TCC.


Assessment of Metering requirement

CTU, STUs and generators were to furnish assessment of SEM requirement for the next

one-year period regularly. The Assessment of Metering requirement was discussed in the

31st CCM wherein the following was noted:

CC forum had requested all Regional entities to furnish the SEM requirements to the

Committee. Sufficient spare SEMs, DCDs and accessories are also to be factored in the

projected requirement.

Issuing Reactive Energy Accounts –Erratic readings by SEM

SRLDC had informed that erratic readings in high voltage cumulative readings (used for

reactive account) were observed from December 2015 to May 2016. Abnormal readings

were detected in SEMs located at Kayathar, Thiruvalam, Karaikudi and Kochi.

CC forum had agreed to issue the reactive energy to issue the reactive energy accounts by

eliminating the erratic reading making H register value as Zero (0) for the week.

Calibration and testing of SEMs in the region

As per CEA metering regulations 2006, 18.1(a), interface meters are to be tested at least

once in 5 years. In this regard, the owners of SEMs are requested to initiate necessary

action. All the utilities were requested to furnish the database, regarding the previous

date of calibration and tests carried out, to SRLDC. PGCIL and other utilities were

requested to initiate the process of Calibration of Testing of Meters in a phased manner to

meet the regulatory requirement.

Non Availability of SEMs as per CEA metering regulations

A consolidated list of locations where SEMs were not available as per CEA Metering

Regulations is given below:

S.NO Element Non availability of

SEM

To be installed by

1 MAPS: GTs (HV side) Stand By CTU/MAPS

2 Vallur : 400kV NCTPS lines

1 & 2

Check NCTPS/CTU

3 400kV Mysore-Nelamangala

Lines 1&2

At Mysore CTU

4 400kV Hoody-Kolar Lines

1&2

Hoody KPTCL

5 400kV UPCL-Hassan line

1&2

UPCL CTU/KPTCL/UPCL

6 400kV Nelamangala-Hassan

line

Nelamangala CTU/KPTCL

7 400kV Talaguppa-Hassan

Line

Talaguppa KPTCL

8 400kV Guttur-Hiriyur lines

1&2

Both Guttur and

Hiriyur

CTU / KPTCL

9 Bonakaalu-Chillakallu lines

1&2

Bonakaalu end of 132

kV Line

TS

10 400kV Hiriyur-BTPS lines

1&2

Both Hiriyur and BTPS KPTCL


SRTS II, PGCIL had stated that irrespective of the ownership of the bay and line, the

owner of the sub-station shall install the SEM at their stations.

Forum requested that the concerned utilities (SRTS II / PGCIL, KPTCL, UPCL, TN) to

install the SEMs in the above locations immediately.

Approval of Metering Scheme for new Generation and Transmission scheme

In the 22nd and 28th CCM, it was decided that all the regional entities, new Generating

Stations and CTU have to submit the Metering Scheme for the new projects and

Substations to CCM forum for the approval at least one year in advance.

It was noted that metering scheme does not only imply installation of SEMs, but also

includes finalising the accounting philosophy. Also, since transmission projects come up

in a planned manner, SRLDC suggested that it should not be a problem for PGCIL to

estimate and submit the SEM assessment in advance.

All constituents were requested to submit the Metering scheme to SRLDC / SRPC with

the requisite documents to get it approved in the CCM of SRPC.

MEPL Metering Scheme Approval

The Commercial committee approved the metering scheme as proposed by MEPL.

Submission of C1-C4 formats for New Element Charging

As per the new NLDC procedure, complete C1-C4 format need to be submitted, soon

after successful trial operation, to declare COD.

Failure to intimate new Bay charging details to SRLDC

All the entities were requested to inform the SLDC/SRLDC and the other end utility (if

applicable) regarding the bay changing works etc., that affect commercial accounting

issues to have effective and correct accounting system.

Non-compliance/Pending Issues as per 2nd

Meeting of Nodal Officers for SEM Data

Coordination

It was noted that most of the SEM issues raised are yet to be resolved

47.2 SRPC noted the above and requested the concerned entities to comply with the actionable

points.

48. REVIVAL OF UNITS AT SHARAVATHI GENERATING STATION

It was noted that all the generating units were revived on the dates given in the table below:

Unit No. Revived Date

Unit-7 23.03.2016

Unit-6 29.03.2016

Unit-8 03.04.2016

Unit-9 28.06.2016

Unit-10 08.07.2016

Unit-3 18.07.2016

Unit-4 30-07-2016

Unit-5 26-07-2016

Unit-1 07-08-2016

Unit-2 14-08-2016


220 kV Lines status:

Lines Revived Date To be revived by

SGS-Shimoga Line-3 21.03.2016

SGS-Shimoga Line-4 26.03.2016

SGS- Talaguppa Line - 2 27.06.2016

SGS- Sirsi-1 01-08-2016

SGS- Sirsi -2 16-07-2016

SGS-Shimoga Line-1 August’2016

SGS- Talaguppa Line - 3 August’2016

SGS-Talaguppa Line - 1 August’2016

SGS- Balligave line August’2016

49. REFERENCE FROM MNRE REGARDING COMPILATION OF DATA FOR

MEETING RENEWABLE ENERGY TARGETS OF 175 GW BY 2020

MNRE/ MoP /CEA vide letters dated 02.03.2016, 22.03.2016 and 29.03.2016

respectively had communicated regarding compilation of data for meeting renewable

energy targets of 175 GW by 2020. Concerned State Utilities/Generating companies are

requested to furnish the data suggested by MNRE. SLDCs had also been requested to

coordinate and furnish the data for the generators in their control area.

Constituents noted the above.

50. PROVIDING INFORMATION REGARDING COMMISSIONING AND

DECLARATION OF COD OF POWER GENERATING UNITS

CEA letter dated 31.05.2016 (Annexure-XXXIII) had requested that all related information

for date of commissioning and commercial operating of units may kindly be informed to

OPM Division of CEA so as to update CEA reporting system / database. Information may

be arranged to be sent to the following e-mail ids.

[email protected], [email protected], [email protected] &

[email protected]


51. FORECASTING, SCHEDULING AND DEVIATION SETTLEMENT OF WIND

AND SOLAR GENERATING STATIONS AT THE STATE LEVEL

Hon’ble CERC in its Order dt.13.07.2016 in respect of Petition No. 91/MP/2014 & I.A.

No. 20/2014 had noted the following:

‘….38. The Forum of Regulators (FoR) has evolved a „Model Regulations on

Forecasting, Scheduling and Deviation Settlement of Wind and Solar Generating Stations

at the State level‟ (Model Regulations), which outlines a model for operational and

commercial management of variable RE sources. The objective of above Model

Regulations is to facilitate large-scale grid integration of solar and wind generating

stations while maintaining grid stability and security as envisaged under the Grid Code,

through forecasting, scheduling and commercial mechanism for deviation settlement of

these generators. The Model Regulations have been proposed to be applicable to all wind

mailto:[email protected]




and solar generators which are connected to the State grid, including those connected via

pooling stations, and selling power within or outside the State………..

……………………

40. We are of the view that the Model Regulations on Forecasting, Scheduling and

Deviation Settlement of Wind and Solar Generating Stations at the State level have been

evolved to address the issues of forecasting, scheduling and settlement of over/under

drawl of power arising out of over /under injection of power from renewable sources

which are connected to the State grid and selling power within or outside the State. The

State Electricity Regulatory Commissions are advised to implement these regulations in

letter and spirit to ensure grid integration of huge renewable resources as envisaged to be

connected to grid in next 5 to 7 years.’


52. SKILL PLAN FOR POWER SECTOR BASED ON THE ASSESSED SKILL GAP IN

THE SECTOR

52.1 CEA vide letter dated 04.07.2016 (Annexure-XXXIV) had informed that a Meeting on

Skill Plan for Power Sector was conducted in MoP on 01.07.2016. The main emphasis

was on the following:

The Report has to be submitted by PSSC by 10th

of July, 2016 clearly indicating the

needs of training and skill gaps in power sector.

All the data captured, analysis made and other facts in the draft skill plan have to be

validated by CEA before finalization of the Report.

52.2 Further to this, MoP vide their letter No. 7/5/2015-T&R dated 01-07-2016 had sought

information in the matter. Based on the letter of MoP a proforma has been prepared. It is

requested that the relevant information pertaining to the sector/sub-sector as per the

proforma may please be arranged to be sent to CEA at mail id [email protected].

52.3 SRPC noted the above and requested the concerned to furnish the required information

to CEA.

53. ISSUES IN OPGW STRINGING UNDER FIBRE EXPANSION PROJECT OF SR

(REFER ITEM 25.16)

53.1 PGCIL vide their letter dated 01st August 2016 (Annexure-XXXV) had stated that out of

total 5,600 km OPGW cable on POWERGRID/SEB lines in Southern Region envisaged

under Fibre Expansion Project, stringing has been completed for 5,556 km while only 44 km

is balance on KPTCL lines.

53.2 KPTCL had requested to include the following additional OPGW links during the progress

of stringing in SR on various lines :

a) Hoody-LILO of Nelamangala-Hoody to Yelahanka

b) Mysore-Hootagalli

c) Hassan-Shantigrama

d) Kolar-Hoody (POWERGRID line)

e) Hoody-HSR

f) Hoody-HAL

g) NRS-Peenya-Hebbal



53.3 KPTCL had accorded approval and communicated to the concerned TL In-Charges vide

their letter dated 20.04.2015. OPGW stringing has been completed on Kolar-Hoody,

Mysore-Hootagalli, partially completed in Hoody-LILO of Nelamangala-Hoody to

Yelahanka & Hoody-HSR lines and stringing is yet to start on the balance lines. When the

stringing on NRS- Peenya- Hebbal was taken up after due confirmation, KPTCL instructed

to suspend OPGW stringing on all the lines. POWERGRID was advised to wait for one

month by KPTCL. Since then, POWERGRID has been pursuing for resuming the stringing

to complete the project. In spite of continuous follow up at all levels POWERGRID has not

received any communication from KPTCL to commence stringing.

53.4 All the above OPGW links, being executed on KPTCL lines around Bangalore city, are

very important and have been included in Fibre Expansion project for establishing reliable

alternate communication paths not only to SRLDC, but also to facilitate communication

among the control centres of KPTCL spread across Karnataka.

53.5 SRPC took up the matter with KPTCL during the Special Meeting on 17th

June 16. During

the meeting KPTCL agreed to arrange the permission by 21.06.16 for starting the works,

but till date, there has been no permission granted by KPTCL.

53.6 Since all works are completed in the subject project except the OPGW stringing of 44 km

on KPTCL lines and the contract cannot be kept alive indefinitely, POWERGRID is

constrained to short close the contract in case KPTCL does not grant permission within one

month time and the balance works may have to be carried out by KPTCL on their own.

TCC deliberations

SR-II, PGCIL had confirmed that all the material had been returned. It was pointed out

that the contract needs to be closed.

KPTCL had agreed to grant permission once the verification of returned ground wire

was concluded.

SRPC deliberations

53.7 MS, SRPC informed that non-completion of balance of 44 kms of OPGW stringing in

KPTCL was affecting the reliable communication to SRLDC. There had been a recent

incident where both the communication links to SRLDC had failed and there was no data

availability at SRLDC. In the TCC Meeting, PGCIL had confirmed that entire removed

ground wire had been returned to KPTCL.

53.8 MD, KPTCL said that a Nodal Officer could be nominated from PGCIL side and it could

be ensured that stock of removed ground wire is taken. He assured that he would look into

this issue.

54. REPLACEMENT OF WRAP FIBRE CABLE WITH OPGW IN GOOTY-

BANGALORE & UDUMALPET-TRICHUR LINKS

54.1 PGCIL vide their letter dated 01st August 2016 (refer Annexure-XXXV) had informed

WRAP Fibre cable was installed on Gooty-Bangalore (313 km) & on Udumalpet-Trichur

(130 km) lines under SR-ULDC project in 2002 and are in operation till date. The WRAP

fibre cable is exposed to outside environment since its installation and hence developed


high signal losses. Half of the 24 fibres are available for usage and rest got damaged in

mid-span and hence not possible to rectify. Wherever it was possible, the WRAP cable has

been replaced with available OPGW. In the recent past Gooty-Bangalore link had failed

many times due to high losses/fibre breaks in mid-span. This is leading to more

maintenance problems and long downtime. The above two inter-state fibre links are very

vital and are part of back-bone fibre network for real time data communication and need to

be maintained with high availability. Since the fibre links are also completing 15 years life

by June’ 2017 and in order to ensure reliable communication, it is proposed to replace the

WRAP fibre cable of Gooty-Bangalore and Udumalpet-Trichur links with OPGW cable.

54.2 The cost implication towards OPGW laying on the above two lines would be approximately

Rs 10.0 Cr.

TCC deliberations

APTRANSCO had observed that Gooty-Bangalore wrap cable was routed through

Hindupur, which needs to be ensured now also. PGCIL had agreed for the same.

TCC had recommended the proposal of laying OPGW on the two lines for approval of

SRPC.

SRPC deliberations

SRPC approved the recommendation of TCC.

55. SUBSTATION ICT- 3 BAY EXTENSION WORKS AT OUR 400 KV MADURAI

AND TRICHY STATIONS

55.1 PGCIL vide their letter dated 01st August 2016 ( refer Annexure-XXXV) had informed

works of Extensions of 230 kV Main and Transfer Buses in TANTRANSCO Switchyard at

Checkanoorani 230 kV Station (Madurai SS) under SRSS-XXIII and Alunder 230 kV

Station (Trichy SS) under SRSS-XX are yet to be taken up by TANTRANSCO.

55.2 PGCIL is expected to commission ICT-3 at Madurai by September 2016 and at Trichy by

December 2016. TANTRANSCO may kindly expedite the aforesaid works.

TCC deliberations

SR-II, PGCIL had stated that their ICT would come up in September 2016 and as per

their information, works had not been awarded for TANTRANSCO’s scope of work.

CTU had stated that the issue of coordination and downstream network not being ready

would come into picture and charges would be required to borne as per Hon’ble

CERC’s Order.

TANTRANSCO had informed that would furnish the update in SRPC

SRPC deliberations

55.3 Chairman, TNEB assured of necessary action at their end.

56. CALIBRATION TESTING OF SEMS IN SOUTHERN REGION CALIBRATION

TESTING OF SEMS IN SOUTHERN REGION

56.1 PGCIL vide their letter dated 01st August 2016 ( refer Annexure-XXXV) had informed that

as per the CEA metering regulations 2006, Interface meters are to be tested at least once in 5


years. Calibration testing of SEMs in the region was discussed in the 31st Meeting of

Commercial Sub-Committee of SRPC held on 22.06.2016. In the said Meeting, it was

concluded that “PGCIL and other utilities were requested to initiate the process of

calibration of testing of meters in the phased manner to meet the regulatory requirement”. In

accordance with the above decision and CEA Metering Regulations, POWERGRID has

initiated the process of Calibration testing of SEMS in the region. After completion of

calibration of SEMs, POWERGRID would approach Hon’ble CERC for reimbursement of

expenditure incurred.


57. CONCURRENCE FOR EARLY COMMISSIONING OF 765KV WARDHA –

NIZAMABAD D/C, 400KV NIZAMABAD – DICHPALLI D/C (HTLS) AND

765/400KV NIZAMABAD GIS

57.1 PGCIL vide their letter dated 01st August 2016 ( refer Annexure-XXXV) had informed the

following :

Investment approval for 765kV Wardha – Nizamabad D/C and 400kV Nizamabad –

Dichpalli D/C (HTLS) and 765/400kV Nizamabad GIS has been accorded on 29th

Jan’2015 with commissioning schedule of 40 Months.

In the 19th

meeting of SR constituents held on 29th

Dec’2015, members have agreed for

granting LTOA of 1,000 MW to Telangana from April 2017.

To meet the power deficiency in the state of Telangana and as per the request of

Telangana, all out best efforts are being put in to the project to commission the same

ahead of schedule. It is proposed to commission the said line along with GIS substation at

Nizamabad in January/February 2017.

PGCIL had requested that the Constituents may kindly agree for the same.

TCC deliberations

TCC had recommended for early commissioning of the above assets.

SRPC deliberations

SRPC agreed with recommendation of TCC.

58. SRPC CERTIFICATION TO CLAIM ADDITIONAL ROE FOR LILO OF 400 KV

KADAPA-KOLAR S/C LINE AT NP KUNTA AND ESTABLISHMENT OF 400/220

KV SUB-STATION AT NP KUNTA

58.1 PGCIL vide their letter dated 01st August 2016 ( refer Annexure-XXXV) had informed the

following :

In the Tariff Petition No. 26/TT/2016 for LILO of 400 kV Kadapa-Kolar S/C line at

NP Kunta and establishment of 400/220 kV Sub-station at NP Kunta under

"Transmission System for Ultra Mega Solar Park in Anantapur District, Andhra

Pradesh-Part A (Phase-I)", CERC has not allowed the additional 0.5% ROE due to

non-submission of SRPC certification and suggested to re-submit along with SRPC

certification during truing up.

POWERGRID commissioned the LILO of 400 kV Kadapa -Kolar S/C line and 01 No.

500MVA ICT at NP Kunta substation in April’2016 i.e. within 12 months from date

of investment approval against CERC time line of 30 months for additional ROE.

The total power generated by APSPCL’s 1st phase 250MW solar power plant was


transmitted from POWERGRID’s ICT from day one and with commissioning of NP

Kunta substation total power generated by APSPCL’s 1st phase was connected and is

useful for the system in maintaining the grid stability.

58.2 Subsequently PGCIL vide letter dated 23.08.2016 (Annexure-XXXVI) had requested to

consider additional ROE for LILO of 400 kV Kadapa -Kolar S/C line, 03 No. 500MVA ICT

and 01 No. 125 MVAR Bus Reactor.

58.3 The following was noted in the TCC:

Additional ROE for LILO of 400 kV Kadapa -Kolar S/C line was not agreed as line

length was less than 50 kms and it was not applicable as per CERC (Terms and

Conditions of Tariff), Regulations.

PGCIL had informed that 3 ICTs were commissioned on NTPC’s schedule of power

injection of 750 MW. This system was commissioned in record time period of 7

months.

TCC had recommended for approval of SRPC stating that 03 No. 500 MVA ICT and

01 No. 125 MVAR Bus Reactor were beneficial for the regional system and

recommended for Additional ROE.

SRPC deliberations

58.4 SRPC approved the recommendations of TCC.

59. NTPC KUDGI 400/220 KV LOSSES

59.1 A meeting was held on 29.7.2016 between NTPC and KPTCL regarding NTPC Kudgi

400/220 ICT losses. The Minutes of the Meeting are enclosed as Annexure-XXXVII (Ref.

Item No.7 of 29th

SRPC meeting held on 5.3.2016).

TCC deliberations

NTPC had stated that the 400/220 kV losses were to be borne by the beneficiary (ies).

KPTCL too reiterated their stand in this regard.

MS, SRPC had clarified that the accounting would be done on outgoing feeders. 400 kV

side SEMs had been installed by NTPC. 220 kV SEMs would be installed by KPTCL.

SRPC deliberations

59.2 MD, KPTCL said that this issue had already been considered by CEA and they would go as

per decision of CEA. They had sought permission to install the energy meters and NTPC

may kindly allow them to carry out the works.

59.3 NTPC stated that they would allow KPTCL to install the energy meters.

60. NTPC SIMHADRI-II SCHEDULING ISSUES

60.1 NTPC vide letter dt.16.8.2016 (Annexure-XXXVIII) had raised issues regarding scheduling

of Simhadri II units below technical minimum on 15.8.2016.

60.2 The following was noted in the TCC Meeting:

SRPC Secretariat had pointed out that 4th

Amendment of IEGC has been brought out. It

stipulated Technical Minimum of 55 % along with compensation for deterioration in

SHR/AEC. It was clearly spelt out that the same would be implemented from the date

to be notified by Hon’ble CERC. On 14th

& 15th

August 2016 there were certain

instances of schedule being less than Technical Minimum (TM is less than even if one


unit is taken out). Schedule of 285-320 MW was given against DC of 950 MW for

more than 20 blocks. NLDC’s procedure on RRAS stipulates that the unit would not be

scheduled below TM but Simhadri II Unit (even one unit) was schedule below TM due

to triggering of Regulation down.

NTPC had stated that running the units below TM involves monetary loss but more

than that safety of equipments is also at risk. Reliability would be affected as it may

lead to frequent breakdowns.

SRLDC had stated that 15th

August was historically a low demand day. The demand of

entire country falls by 20,000-30,000 MW while SR demand falls by about 4,000 -

6,000 MW. The issue had been clearly sensitized to all the entities on 14.08.2016. TN

& Karnataka had given zero requisition to Simhadri II and as per IEGC, SRLDC had to

schedule sum of all contracted sum of requisitions of all the beneficiaries and it has to

be operationally reasonable. There was a clear cut directive from Hon’ble CERC that

incase of low demand, wind generation has to be accommodated first. A number of

Petitions are also there in this regard. On 15.08.2016, there was drop of around 20,000

MW. Due to good wind injection, TM schedule could not be maintained for Simhadri

II. Schedule was furnished suggesting NTPC that unit could be taken out if they so

desired. Simhadri II was selected since it had the highest variable cost. SRLDC had

never suggested TM from 70% to 55% and never talked about RSD. Keeping in view

that one unit would be on bar, schedule had been finalized. SRLDC had ensured that no

wind was backed down. It was not correct on the part of NTPC to expect jacked up

schedules, for commercial reasons, as being done for other 364 days in the year. In the

Grid Disturbance petition Order, it had been stated that NTPC should have complied

with directions of System Operator rather than suggesting alternate solution. Entity

needed to comply with RLDC instructions, even if the results in commercial loss etc.

As per provisions of EA the RLDC decisions are to be complied. NTPC had earlier

raised concerns of vibration when schedule was given less than 70% in Ramagundam

and NTPC was more focused on commercial issues. Aggrieved party could approach

CERC if it so desired and SRLDC would justify its stand there.

NTPC had stated that low demand scenario was well known. Operation of machines

below TM was not good for machines and in critical situation Reserve shutdown should

have been directed. No Regulator/System Operator would want machines to operate in

unsafe zone. During partial loadings, both generators and beneficiaries stand to loose.

SRLDC had referred the case of 15.08.2016, but on 14.08.2016 also schedule of 282

and 486 MW had been given.

TSGENCO had endorsed the views of NTPC and stated that whenever unit operates

below TM, oil support is required, which could lead to tube failures. They had

analyzed boiler tube failures during recent past and most of the failures were due to

maintaining the units at TM. Running the unit in non economical and non technical

zone was not advisable. Most of the generators were also of Government, and paid by

consumers and hence SRLDC needs to take an overall view.

NLC had also supported NTPC’s view and stated that for lignite fired boilers on

reduced loading, it is very difficult to maintain fireball. Maintaining 55 % loading is

very difficult and frequent shutdown is not the solution.


KPTCL had stated that wind generators are must run, but in extreme contingency RE

can also be backed down by SLDCs. Time, frequency, TM, forecast of wind, certainty

of wind, need of thermal generator in coming hours etc are to be considered before

taking any generator out from the grid. SLDC are the entities who have to take such

decision and flexibility had to be given to them to take decisions in overall safety and

security of the grid.

CEA had stated that they have high regard for POSOCO as System Operator. SRPC

forum is a collective operating entity and one should not undermine the SRPC

institution. It is a collective decision to absorb wind and POSOCO is not solely

responsible to ensure that RE is must run. Collective decision of RPC is to be

implemented by POSOCO and decision of RPC cannot be different from what is

stipulated in Regulations. Principle is to be followed but the procedure has to be fair to

all.

SRPC Secretariat had enquired whether any State generator was asked to for shutdown

through SLDC as the situation was well known. Also, during the same period, some of

the other generators were given schedule higher than 70 %.

SRLDC had stated that they are taking care of merit order dispatch of only ISGS and

state generators are under purview of SLDCs. In fact SRLDC had suggested that in

case of schedule below/around TM, NTPC could generate 50-100 MW more. Also in

fact SRLDC had allowed injection of 100-150 MW more than schedule in real time. If

each action is scrutinized it would be very difficult to operate the system in real time.

NTPC had pointed out that as per Revision no 63, zero MW schedule was given for two

blocks and unrealistic schedules of 20 MW, 87 MW etc for Simhadri Stage II. During

contingency SRLDC was empowered to direct shutdown.

TANTRANSCO had stated that guidelines were required to be framed, since even

thermal generators of TN were getting affected. Many a time’s thermal generators are

running on oil support to integrate RE. TANGEDCO had informed that one 600 MW

unit shutdown costs around Rs 8 Crores.

CEA had stated that POSOCO has very rich experience in implementing TM in other

regions like Jajjhar, Gandhar etc. TM was equally distributed among generators. In

recent CERC’s Order on TN’s Petition it was clearly mentioned that TM was to be

ensured for state generators. POSOCO could approach CEA with this issue. Other Grid

Code provisions are also there, while ensuring Must Run status to RE. If the problem

persisted RLDC could approach CERC/CEA to develop a Procedure like TM/RSD etc.

SRLDC had pointed out that generators like CEPL are able to run around 50% on

sustained basis the apprehensions of generators does not appear justified. They have

gone through the Grid Code and nowhere is it mentioned that schedule is to be jacked

upto TM.

60.3 TCC had recommended that advice of CEA could be sought and CEA could be requested to

come out with guidelines which could be adopted by System Operators at RLDC/SLDC.

This would facilitate RE absorption in a well defined manner.

SRPC deliberations

60.4 GM, SRLDC appraised the forum about the situation which had led to lower schedules to

Simhadri II. Both Karnataka and Tamil Nadu had given zero requisition from Simhadri II


during night hours (02-04 hours) to accommodate wind. SRLDC had honored the schedule

of technical minimum of one unit and accordingly, schedules were finalized for Simhadri II.

Even during that period, SRLDC allowed Simhadri II to inject more than the schedule. Out

of 365 days, if for one day, lower schedules are given and the actions of RLDC are

analyzed it would become very difficult to operate the grid. It can be seen from the media

reports that not even a single unit of wind has been backed down in SR due to efforts of

SRLDC. He stated that it could take 3-4 months in case the matter is referred to CEA.

60.5 MS, SRPC suggested that CEA may be approached for getting general principle / statutory

advise.

60.6 Director (GM), CEA said that Chairperson, SRPC in his opening remarks had given very

good guidance. He had stated that renewable were not state/regional resources rather they

were national resources. They should be optimally utilized as national asset. Earlier, Tamil

Nadu was doing its best to maximize wind absorption and now SRLDC is also making

efforts to maximize wind integration. A long term solution with national approach is

required to have clarity on the roles and the responsibilities of various entities.

60.7 Chairperson, SRPC said that while advice of CEA could be sought, preference should be for

wind. In Tamil Nadu, units were being shutdown to absorb the wind since wind power had

become cheap and had other associated benefits. In real time grid operation, SRLDC had the

last call on the matter.

60.8 After deliberations, it was agreed that CEA’s advice would be sought for smoother

facilitation of renewable integration.

61 20-YEAR (2016-36) PERSPECTIVE TRANSMISSION PLAN REPORT

61.1 CEA vide letter dated 29.02.2016 had issued a consolidated perspective report on

Transmission System Requirement for the next 20 years. The report has two parts ie., Part-

A : ‘Advance National Transmission Plan for 2021-22’ and Part-B : ‘Perspective

Transmission Requirement for 2022-36’. Following are the highlights in SR context:

Report (Part-A) on Advance National Transmission Plan for Year 2021-22

SR load is expected to be around 60,120 MW by 2021-22.

Generation addition in SR considered for study was around 29,290 MW (Coal), 1,500

(Nuclear) and 236 MW (Hydro) for the period November 2015-2022.

Deficit may be around 4,872 MW (Q1), 4,732 MW (Q2), 3,662 MW (Q3) and 6,748

MW (Q4). During analysis for sensitivity of 5% generation not available in SR the

deficit may go up to 7,930 MW.


Above analysis and studies indicate that major high capacity transmission corridors

that have already been planned and which are under implementation would be

sufficient to meet import/export of power among various regions in the year 2021-22.

This is based on the assumptions of load growth and generation capacity addition as

stated in this report.

State Transmission Utilities (STU) need to take up planning and implementation of

their respective intra-state systems and its interconnection with ISTS matching with

the schedule of implementation of various ISTS schemes.

Report on Perspective Transmission Requirements for 2022-36

SR Demand could be around 98,210 MW (2026-27), 1,46,700 MW (2031-32) and

2,03,400 MW (2035-36).

SR Generation capacity could be around 1,90,878 MW (2026-27), 2,58,927 MW

(2031-32) and 3,26,548 MW (2035-36).

SR would be importing around 16,200 MW (2026-27), 30,100 MW (2031-32) and

47,700 MW (2035-36).

Transmission corridor capacity requirements have been worked out based on advance

estimates of peak load demand and preliminary assessment of region-wise generation

addition possibility of next 20 years. It is seen that massive transmission corridors may

be needed towards Northern and Southern regions. There is need to enhance hydro

generation capacity in Northern and Southern regions to lessen this massive

transmission system.

It is seen that the renewable energy sources contribute very less towards meeting peak

load requirements. In view of large RE capacity addition being proposed, we would

need to review, explore and adopt different approach to maintain load-generation

balance and operation of grid.

Transmission capacity requirements are sensitive to load growth and generation

addition assumptions, especially when load growth may be in a range of 5-8 % per

annum and location of generation additions of next 20 years cannot be accurately

ascertained. As such, these transmission capacity requirements are only indicative in

nature.

61.2 SRPC noted the above

62 REIMBURSEMENT OF SRPC EXPENDITURE

Statement showing net amount payable by Member Utilities of SRPC for the year 2016 -17,

after adjustment of surplus/deficit for the previous period is furnished in Annexure-

XXXIX.

Members were kindly requested to ensure payment, wherever due.

63 VOTE OF THANKS

Chairperson, SRPC thanked all the Members for their cooperation in smooth conduct of the

Meeting.

64 DATE & VENUE OF THE NEXT SRPC MEETING

KPTCL kindly agreed to host the next SRPC/TCC Meetings. The date and venue would be

decided in due course.

*********