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MOM of 144th OCCM held on 12.06.2018 at SRPC Bangalore Page 1

Southern Regional Power Committee Bengaluru Minutes of the 144th Meeting of Operation Coordination Committee

held at SRPC Bangalore on 12.06.2018 1. Introduction

1.1 The 144th Meeting of Operation Coordination Committee was held at SRPC Bangalore, on 12th

June 2018. The list of participants is given at Annexure-1A.

1.2 Shri S R Bhat, Member Secretary SRPC welcomed all the participants to the 144th OCC Meeting

being held at SRPC. He extended a special welcome to Shri V Chandrashekhar who had taken

charge as Chief Engineer, ED, KPCL & was attending the OCC Meeting for the first time. He also

welcomed Shri Jayadeb Nanda, COO Adani, UPCL. On behalf of the forum he conveyed heartiest

congratulation to Shri Srinivas Shenoy who had been promoted as Superintending Engineer,

KPCL and wished him a bright career in future.

On Grid Operation side, Member Secretary highlighted the following:

In the 143rd OCC it had been decided that further studies would be carried out on three

specific issues. One issue was the Simhadri – Kalpaka- Gajuwaka corridor reported

overloading. SRPC/SRLDC team had finished the studies in this regard and circulated the

report. System studies to analyse the reasons for low voltage at some of the nodes in Kerala

and Karnataka and arrive at solutions was also carried out. On 4th May 2018 a VC was

conducted with KSEBL. Studies regarding enhancement of net exportable quantum for SEIL

were also covered.

Talcher RTU issue had been resolved and link to SRLDC had been established which was a

long pending issue. He congratulated NTPC for completing the same.

A Special Meeting had been convened to deliberate on the scheduling issues of

Ramagundam, NTPC Solar on 07.06.2018 at SRPC. He hoped that in the meeting scheduled

on 15.06.2018 at NTPC, SRHQ, Secunderabad, this issue would be resolved.

Validation committee Meeting was scheduled to be held on 28th June 2018 and he requested

all the States to kindly participate in the Meeting.

Issues regarding ICCP reliability during first week of May 2018 had been deliberated in last

OCC as well as in the Special Meeting held on 23.05.2018 at SRPC. A group had been

formed to formulate a procedure to be followed during ICCP failure..

On 13.06.2018 a Sub Group Meeting is scheduled to be held to finalize the guideline for

Cyber Security Audit. A draft procedure had already been circulated.

In respect to frequency of operation of the grid he observed that during first half of the month

frequency was below IEGC range for considerable duration of time whereas in the latter half

instances of high frequency with under drawls were also noticed.


NLDC had issued a report on the tower collapses in the country in which 765 kV Narendra

(New) – Madhugiri (Tumkur) tower were also mentioned. SRPC had requested KTL to furnish

status report/action being taken in this regard since progress was being monitored.

During the last month, loss of DC with respect to Normative was around 292 MW which

appeared to be quite high.

Revision of Ramp rates of Thermal stations had been discussed in the 143rd OCC Meeting.,

Accordingly, all NTPC stations, NTECL and NTPL had revised the ramp rates which had

resulted in an increase in ramp of around 262 MW/block. He thanked the generators in this

regard.

1.3 Superintending Engineer (O), SRPC took up the Agenda for discussions.

2. Confirmation of the Minutes of the 143rd Meeting of OCC of SRPC held on 14th May 2018 at Hyderabad

The Minutes of the 143rd OCCM were confirmed with the following observation:

In para 3 of item No 4 of the 143rd OCC meeting, it had been inadvertently recorded that

both the units would be available with full DC till August 2018. This sentence may be

considered as deleted.

Further the in the approved Outages uploaded on 13.06.2018 (approved outages of 143rd

OCCM) on SRPC website Unit-I of UPCL has to be read as Unit-II.

3. MAJOR ISSUES

3.1 Review of UFR quantum and set points

NPC letter dated 30.05.2018 regarding review of UFR quantum is at Annexure-3A.

MS, SRPC stated that AUFR quantum had not been revised since quite some time. Now the

revised quantum had been worked out by NPC is as per agreed procedure. States could kindly

respond regarding raising of the triggering frequency for all the stages by 0.2 Hz.

All the states informed that they would revert back after consulting with their Higher Management.

It was decided that states would revert back on the NPC proposal of the set points for

UFR (49.2 Hz, 49.0 Hz, 48.8 Hz & 48.6 Hz) or (49.4 Hz, 49.2 Hz, 49.0 Hz & 48.8 Hz) positively

by 19.06.2018.

3.2 Study Reports on issues discussed in the 143rd OCC Meeting(Annexure-3B-Attached

separately )

In the 143rd OCC Meeting held on 14th May 2018, it had been agreed that the three following issues

would be further studied by SRPC and SRLDC.

A. Low Voltage in certain pockets in SR

After deliberations in the 143rd OCC Meeting on the issue of low voltage prevailing in some of the

nodes of Karnataka, Kerala and Tamil Nadu the following had been noted:


UV Relay logic is to be changed by KPTCL. After tripping of 25 MW at 3rd minute, 50 MW would

be tripped at 6th minute, 75 MW at 9th minute and 100 MW at 12th minute. This would be done on

the same set of 100 MW loads identified in Stage I.

With respect to low voltages and implementation of UV relays at Madakathra, Kozhikode, Kochi

and Palakkad in Kerala , a VC would be conducted.

System Studies will be carried out regarding low voltage in Somanhalli / Hoody / Nelamangala

(Bengaluru ring) before month end. The study would also cover the reactive drawal pattern of

KPTCL.

TANTRANSCO to revert back on the low voltage issues on 12.04.2018 and 13.04.2018 along

with the action plan to mitigate the low voltage scenario by end of May 2018.

In the Meeting it was noted that a detailed study was carried out by SRPC/SRLDC and the study

report had been submitted. A VC was also had been conducted on 4th June 2018 with KSEBL. The

same has also been dealt in the Report.

The following was noted

Regarding low voltage in Kerala, KSEBL stated that they would revert back on the study report of

SRLDC / SRPC considering the Edamon – Kochi line. It was agreed that the issue would further be

discussed through VC.

Regarding the low voltage in Bengaluru 400 kV ring (SRLDC/SRPC study report), it was noted that a

special meeting would be called with participation from BESCOM, KPTCL, SRLDC and SRPC. There

was huge drawal of VARs. The delay in commissioning of the capacitors would be discussed.

TANTRANSCO vide letter dated 11.06.2018 (Annexure- 3C) had replied for the reasons for low

voltages on 12.04.2018 and 13.04.2018. The issue was due to multiple 400 kV line outages viz. 400

kV MTPS-Palavadi line I.

B. Simhadri – Kalpakka- Gazuwaka Power Corridor Loading Issue on 23.04.2018 NTPC had furnished observations during the Kalpaka-Simhadri-line-2 shut down on 23.04.2018.

SRPC/SRLDC‟s report was further discussed in a Special Meeting with NTPC and SRLDC held on

31.05.2018.

In the Special Meeting, NTPC had brought to attention the incident that happened on 23.04.2018

during Kalpaka-Simhadri-line-2 shut down (requested by APTRANSCO). It was noted that the code

for opening the Circuit II had been “cancelled” by SRLDC on the request of APSLDC. The manner of

:”cancellation” was not understood since it was understood that only a separate code was required to

bring back the line. NTPC had desired that an Operating Philosophy be devised in advance prior to

any such planned outage. SRPC vide letter dated 01.06.2018 (Annexure-3D) had requested

APTRANSCO to arrange for the presence of the concerned Officers in the OCC to enable meaningful

discussion on this issue.

In the Meeting MS, SRPC desired to know regarding the reason for closing the line after availing the

shut down and also what was meant by “cancellation” of the Code.


DE, APTRANSCO informed that after availing the shutdown of one of the line, the other lines were

getting loaded above 600 MW. State demand was high around 8,000 MW and the generation at

Simhadri Stations was maximum at that time. Operators at both Simhadri and Kalpakka ends had got

little apprehensive and had requested to charge the line to avoid tripping of the other lines.

DGM, SRLDC explained that 3 minutes after opening the line, the line had been closed without

informing SRLDC and afterwards it was informed that the Code for opening the line was cancelled.

NTPC, Simhadri informed that line shutdown had been availed by APTRANSCO. After opening, the

line had been charged from Kalpakka end and Simhadri was asked to synchronize at their end.

SRLDC observed that approvals for shutdowns are being concurred by OCC only after adequate

system studies. Further any Code is being issued in real time only after analyzing the current system

conditions. In case of any apprehensions regarding this shutdown, APTRANSCO should have carried

out their own studies/or consulted SRLDC well in advance. Code should be availed for opening the

line and a separate code for closing the line. In this case Code had not been availed for closing the

line.

After deliberations the following was noted: Study report by SRLDC / SRPC for the Simhadri-Kalpakka-Gazuwaka corridor loadings was

noted by the OCC. It was noted that the loading on Simhadri-Kalpakka line would be around

600-650 MW during outage of one of the line. This was within the thermal loading limit of

line. SRLDC pointed out that APSLDC needed to have a dedicated study group to

comprehend such situations before availing shutdown and till such time should rely on

SRLDC. There is no procedure termed “cancellation” of Code. Both for any opening and

closing, the line/element code should be invariably taken unless otherwise in case of any

contingencies like danger to equipments etc. Respective ends should avail the Code from

SRLDC for opening/closing in case both the end ownership are different.

C. Enhancement of net exportable quantum for SEIL (2 x 660 MW)

SEIL vide letter dated 22.03.2018 had requested that Net Exportable Capacity Quantum for SEIL

Unit(s) may please be updated and recorded as 1254 MW (627 MW each unit) against 1240(620

each). The issue had been deliberated in the 142nd/143rd OCC Meetings. It was noted that SRPC

and SRLDC would finalize the methodology/procedure to be followed in this regard. RGMO

compliance as per IEGC provisions was to be ensured.

Recommendation of the study report of enhancing the exportable quantum from 1240 MW to 1254

MW were noted by the OCC.

3.3 Signing of Agreement / MOU between Powergrid and Constituents for Replacement of S-900

RTUs in Northern Region

SRPC vide letter dated 24.05.2018 (Annexure-3E) had communicated the concern to ED (LD &

C), PGCIL and requested that a review exercise regarding this may kindly be taken up for SR also.


SR-I & SR-II clarified that the CPU card was to be replaced to handle the present communication

requirements for various applications. The ISG stations requirement of replacing the CPU card

could be covered in the scope of PGCIL works on payment basis. ISG stations were requested to

revert back. SR-I and SR-II were also requested to come out with a comprehensive proposal which

could be put up for approval in the next SRPC meeting.

3.4 Scheduling of Ramagundam NTPC Solar Plant

The matter regarding scheduling of Ramagundam Solar Plant had been under discussion in the

SRPC forum for quite some time. SRPC vide letter dated 20.04.2018 had requested NTPC to

update on the present status and also arrange for the immediate action for scheduling of this plant

by SRLDC. In the 143rd OCC Meeting it was decided that NTPC Ramagundam Solar Scheduling

would be carried out by SRLDC from 01.07.2018.. SRPC vide letter dated 24.05.2018 (Annexure-

3F) had requested RED, NTPC that necessary instructions may kindly be arranged to be issued

for timely compliance of the OCC decision.

A Special Meeting had been convened on 07.06.2018 at SRPC Bangalore to further deliberate on

the issue.

Subsequently a Meeting had been conducted at NTPC SRHQ, Secunderabad on 15.06.2018

Minutes of the Meeting is at Annexure- 3G.

The following had been summarised after the Meeting:

SRPC would take up the issue of allocation of 10 MW of pooled unallocated power from

NTPC stations of SR to Telangana with CEA.

It was agreed that 10 MW of Ramagundam Solar Power Project would be availed by

Telangana from 1st July 2018 along-with 10 MW of pooled unallocated power from NTPC

stations for SR.

The status quo would continue till the approval/ revised allocation is received from CEA.

Once the approval/ revised allocation is received from CEA the above arrangement would be

implemented within three days.

SRPC vide letter dated 15.06.2018 (Annexure-3H) had requested CEA that necessary

concurrence for allocating 10 MW of unallocated power of coal based NTPC stations in SR for

pooling with power from solar power project 10 MW at Ramagundam to Telangana may kindly be

conveyed.

3.5 Kudgi –schedules requested from states for performance tests

In the Meeting, NTPC Kudgi requested that Kudgi Unit I & II need to carry out some performance

tests. Some amount could be released to the OEM only after performing the tests. States were

requested to give schedules as required to carry out the tests. States expressed that in the present

scenario it is not possible to give schedules and the same may be considered one unit at a time in

July 2018 or later.


After deliberations, it was suggested that NTPC may kindly furnish a complete plan like

number of tests, likely date of tests, block wise needed schedules etc well in advance (by

next week) and the same would be discussed in the next Meeting of OCC.

TSTRANSCO suggested that in the present scenario of high RE integration, other costlier stations

also may be taken out under RSD. SRPC clarified that the matter would be decided according to

the requisition and as per RSD Procedure.

3.6 Adoption of uniform procedure to prepare Merit Order Despatch List

In the meeting it was noted that different methods are followed by states to prepare Merit Order

Despatch List. For example it was noted that an ISGS had changed the variable cost

subsequently while scheduling was carried out as per original MOD list. MS, SRPC opined that

states may share their merit order preparation procedure. It was suggested that common

guidelines for preparation of Merit Order Dispatch List may be formulated which may be included

as an agenda item in the next Commercial Meeting scheduled on 29th June 2018.

3.7 Ramp Rates

In the 143rd OCC Meeting it had been felt by the forum that the issue was significant since RE

penetration was increasing day by day and SRPC could take up the issue with Hon‟ble CERC. In

the interim period all ISGS generators were requested to give a ramp rate of 0.5% minute or

more in the next RRAS Form. The same ramps would be utilized for scheduling.

Subsequently SRPC vide letter dated 23.05.2018 (Annexure-3I) had taken up with ISG stations

and had requested that this matter may kindly arranged to be examined urgently and necessary

instructions for upward revision of the ramp rates issued under intimation to SRLDC and SRPC.

In the Meeting it was noted that all the ISG Thermal Stations of NTPC, NTECL and NTPL had

revised the ramp up and down rates. It was noted that around 262 MW was additionally available

for SR constituents for ramp up and ramp down in each block. (details at Annexure-3J)

SRLDC informed that even though the ramp rates were changed in RRAS form, the generators

were yet to feed the same in scheduling program.

SRPC reiterated that SLDCs should also ensure enhanced ramp rates from the state generators.

All units irrespective of control area jurisdiction/ownership need to contribute with higher ramp

rates.

TSTRANSCO informed that their thermal stations are coming up to full load from no load within

two-three time blocks. TSTRANSCO was requested to kindly share the details.

It was noted that all RRAS entities had increased the ramp up / ramp down rates at least to

0.5 % and the same would be entered into the scheduling software from 16th June 2018

onwards. SRLDC will furnish an exception report on ISG Stations not complying to same.

SLDCs were requested to ensure the same or higher ramps from the state embedded

generators and the follow up / compliance would be discussed in the 145th OCCM.


3.8 Utilization of RE Generators for Reactive Compensation & High Voltage

SRPC vide letter dated 24.05.2018 (Annexure-3K) had circulated a Note regarding MVAR power

restrictions/support from RE generators. It was felt that suitable penal rates/incentives may need to

be in place for RE generators for their contribution, in the interest of smooth grid operation. All

states had been requested to give their comments in this regard so as to help in to arrive at

consensus on this matter in Southern Region and to take the matter further.

SRPC vide letter dated 24.05.2018 (Annexure-3L) had taken up the issue of reactive power

support by the generating stations including RE with Hon‟ble CERC.

TSSLDC vide letter dated 09.05.2018 (Annexure-3M) had requested to clarify whether state

utilities and distribution utilities can be addressed to include suitable clause in the connectivity

conditions, that models figuring in the RLMM list are added to the Grid. SRPC vide letter dated

28.05.2018 (Annexure-3N) had informed that in the Guidelines issued by MNRE for development

of Onshore Wind Power Projects it had been mandated that no wind turbine model shall be

allowed for installation in the country until it has obtained type and quality certification. MNRE has

stipulated verification of complete certificates of the models etc which needs to be carried out by

the concerned procurement agency.

In the Meeting, APTRANSCO informed that they had conducted a Meeting with RE generators and

they are approaching APERC.

SRLDC informed that at Urva Konda, RE generators are injecting MVAR of around 80-120 MVAR

(equivalent to a Reactor) at a voltage above 430 kV.

TANTRANSCO informed that the issue had been taken up with RE Generators.

MS SRPC informed that the existing provisions of PPA and constraints in present scenario had

been tabulated and furnished. PPA conditions need to be aligned with present day grid

requirements. Before approaching RE generators, SLDCs may need to arrive at their requirements

from grid operation point of view.

KSEBL informed that RE generators are not being penalised (charges suspended) on injection or

absorption of MVAR in case the same is as per SLDC instructions.

After deliberations it was agreed that comments on SRPC note on reactive support by RE

Generators circulated vide letter dated 24.05.2018 would be furnished by the states by

month end. It was noted that the reactive support was required from grid operation /

reliability perspective and the same needed to be internally discussed by the SLDC /

TRANSCO / DISCOMs / Commercial sections and then it could be taken up with the RE

generators.

URS from CGS/ISGS-Surrender on day ahead basis


TSTRANSCO vide letter dated 08.06.2018(Annexure-3O) had pointed out certain practical

difficulties in the surrendering of URS by entities on day ahead basis at different timings for various

time blocks as per their convenience.

In the Meeting DE, TSTRANSCO informed that system operators need to frequently check the

surrendering of power by other utilities on day ahead basis also since the surrendering entity is

surrendering the power on day ahead basis at different timings for various time blocks. First come

first serve is adopted in real time as well as on day ahead basis also which causes stress on

system operator.

SRLDC stated that they would look into the issue.

APTRANSCO stated that if they are availing URS power of Kudgi and later when suddenly wind

power comes, surrender of its own share was only possible after surrender of availed URS.

TANTRANSCO also expressed some practical difficulty in entering the URS requisition in the web

based programme for the next day. The forum felt that the scheduling of URS power on day ahead

as well as daily basis needed more clarity and requires detailed deliberations. SRLDC & SRPC

requested all the states to furnish the problems faced by them in this regard.

After deliberation it was decided that regarding URS and other scheduling aspects, the agenda

would be furnished by the state and the same would be discussed through VC.

3.9 Non Availing of Unit I of UPCL as per approved Outage Plan

KPTCL communication regarding non availing of UPCL Unit I for shutdown as approved in the

143rd OCC is given at Annexure-3P SRPC letter dated 11.06.2018 addressed to UPCL/KPTCL is

at Annexure-3Q. UPCL communication dated 11.06.2018 and 12.06.2018 to SRPC in this regard

is also given at Annexure-3R.

In the Meeting, COO, UPCL informed that UPCL had undertaken COH during forced outages in

2017 for both the units. While Unit I shut down was availed for 78 days from 07.07.2017 to

23.09.2017, Unit II shutdown was for 60 days from 31.10.2017 to 31.12.2017. COH is being

carried out once in four years and the next COH is required in 2022 only. In the meantime on

01.05.2018 UPCL had communicated both to KPTCL SLDC as well as SRPC that there is no

outage planned for the month of June 2018. Provision is provided in the IEGC for revising the

Outage Plan on monthly and quarterly basis. In the Minutes of 143rd OCC Meeting also it was

mentioned that both the Units of UPCL would be available till August 2018. He said that both the

units should be considered available throughout the year. KPTCL had requested UPCL to avail

shut down Unit I as approved in OCC which was not acceptable.

EE, KPTCL informed that as per approved outage plan uploaded on SRPC website, the schedule

of outage of Unit –I was from 01.06.2018 to 10.07.2018 and the Unit was not taken out on

01.06.2018 as per plan. On 08.06.2018 KPTCL had requested UPCL to take out the unit since the

optimum operation of KPTCL grid was being affected by UPCL power injection. UPCL had taken


out Unit II instead of Unit I on 09.06.2018. He stated that UPCL should stick to the OCC approved

outage plan.

COO reiterated that on 01.05.2018 UPCL had communicated to KPTCL that were no outages

planned in June 2018 for any of the units and from 01.06.2018 to 08.06.2018 KPTCL had

scheduled power from UPCL. There was no communication from KPTCL till 08.06.2018 in this

regard.

MS, SRPC stated Annual Outage Plan had been earlier uploaded in SRPC website in March 2018

in which UPCL had furnished outage schedule of Unit II from 01.06.2018 to 10.07.2018. He

clarified that in the minutes it was inadvertently recorded that both the units will be available at full

DC till August 2018 which will be amended. But in the Appendix of Minutes it can be seen that

availability had been considered keeping in view outage of the UPCL Unit II in the month of

June/July 2018. In the approved shutdown list uploaded in SRPC website on 13.06.2018 the

approved shut down of UPCL Unit I (it should have been Unit II) was from 01.06.2018 to

10.07.2018. However, KPTCL was scheduling UPCL power from 01.06.2018 to 08.06.2018 and

had never communicated to UPCL on non-availing of shut down till 08.06.2018. He opined that no

generator can be forced for availing COH. Revision of Outage Plan/LGBR is also possible as per

IEGC provisions.

SE(O), SRPC clarified that as DC declaration by UPCL and scheduling by SLDC needs to be

carried out as per Grid Code provisions.

GM, SRLDC expressed that UPCL could have furnished the revised outage plan when the units

were taken out the units under forced outage and utilised for COH. KPTCL also didn‟t respond to

UPCL‟s message dated 01.05.2018 and was scheduling power from UPCL. However, he also

opined that no unit can be compelled to go for COH.

Generators opined that as per request from states/transmission agencies, many outages had been

postponed. However, a generator cannot be forced to go for COH if already it has been completed.

After deliberations the following was concluded:

UPCL pointed out that the COH of both the units had been carried out during FY

2017-18 and there was no planned maintenance programmed for FY 2018-19 for any

of the units. It had been clearly communicated in the 01.05.2018 mail that there was

no planned maintenance for the months of May/June 2018. SRPC pointed out that

the approval was in respect of Unit-II which was wrongly uploaded in the approved

outages as Unit-I. Further, in para 3 of item No 4 of the 143rd OCC meeting, it was

inadvertently recorded that both the units would be available with full DC till August

2018. Both the amendments have been incorporated in the confirmation of the

minutes in Para 2 of the 144th OCC meeting. SRPC & SRLDC pointed out that LGB

was also a statutory document being prepared and by and large it needs to be

adhered to. KPTCL pointed out that the COH needed to be carried out as agreed in


the 143rd OCC meeting and as uploaded. There were purchase implications also.

KPTCL informed that they may not accept the change in the outage plan of the UPCL

and will further revert back after discussion with higher Management. The purchase

plan was according to LGBR. UPCL also pointed out that power had been availed by

Karnataka from 1st to 8th and both the units are available and the power could be

scheduled. Other generators pointed out that generation station cannot be forced to

go for COH / maintenance if not required. KSEBL pointed out that there were

changes to LGB by generators and even by states. UPCL also pointed out that as per

IEGC Regulations, there is a provision for monthly review of outage plan. UPCL

further pointed out that a generator can’t be forced to avail a COH and also added

that it will not avail any planned outage in FY 2018 -19.

3.10 SPS Mock Tests

Mock tests to check the healthiness of KKNPP & Talcher-Kolar SPSs were carried out on

21.05.2018 and for Raichur -Sholapur SPS on 22.05.2018. SRLDC had submitted the Reports on

Mock Test (Annexure-3S).

KSEBL vide letter dated 23.05.2018(Annexure-3T) had furnished etails/observations of the test

w.r.t KSEBL.

Load Grouping of SPS schemes are at Annexure-3U

In the Meeting, it was noted that at many stations the trip signal was not received due to DTPC link

failure at Kolar. In Karnataka signal of KKNPP one was not received at 220 kV Gowribidanur

Substation due to unhealthy link between 220 kV Dodaballapur to Gowribidanur. KSEBL informed

that the issue of Pothencode had been rectified on the same day. Signal was not received at

Arasur, Trichy, Madurai and Thiruvarur in Tamil Nadu.

After deliberations it was noted that the compliance report on the SPS mock test would be

furnished by SR-II. KPTCL informed that the link between Doddaballapura – Gowribidanur

would be established. TANTRANSCO informed that the link issues (between Erode and

Trichy would be addressed and compliance would be communicated.

3.11 Observations of the Techno Group with regard to the proposals of Installation of Capacitors

Convener, TESG & Consultant, NLDC vide letter dated 21.05.2018(Annexure-3V) had furnished

the extracts of the 38th Meeting of TESG held on 26.02.2018 and had requested for needful on

priority with regard to observations. With respect to SR it was mentioned that the Capacitor Study

Report submitted by SRPC prepared by CPRI deals only with transmission level (132 kV and 220

kV voltage level) whereas requirement was also for distribution level(33 kV and 11 kV).

SRPC vide letter dated 29.05.2018(Annexure-3W) had submitted the reply in this regard to

Member Secretary, Appraisal Committee.

OCC noted the above.


3.12 Geo-tagging of Wind turbines

NIWE vide letter dated 09.05.208(Annexure-3X) had communicated that NIWE is in process of

carrying out Geo-Tagging/Online registry of wind turbines for maintaining a centralized system of

data base. SRPC was requested to revert back with suggestions/clarifications, if any.

SRPC vide letter dated 18.05.2018(Annexure-3Y) had replied to NIWE in this regard.

OCC noted the above.

3.13 Sub-Group to finalize the standard procedure for cyber security audits

A Special Meeting on compliance of CERC (Communication System for Inter-State transmission of

Electricity) Regulations, 2017 was held on 08.05.2018 at SRPC.

The procedure being followed by the entities in respect of Cyber Security was to be shared in the

web group ([email protected]). APTRANSCO

/TSTRANSCO had furnished the Executive Summary of Vulnerability Assessment.

A sub group Meeting to finalize the standard procedure on Cyber Security was held at SRPC on

13.06.2018. The draft guideline after deliberation in the Meeting was circulated to the concerned

entities for further comments, if any.

Further the list of communication channels including PLCC and terminal equipments in the intra-

state and inter-state which would come under the ambit of the Audit were be furnished to SRPC by

31.05.2018 (The format available in MOM of meeting held on 08.05.20118).

Subsequently it was noted that the Meeting was conducted on 13.06.2018 at SRPC Bangalore.

3.14 Talcher RTU issue

It was noted that NTPC Talcher had procured a new RTU with a dual porting reporting system

(ERLDC and SRLDC) and the link to ERLDC had already established. Link to SRLDC iwas yet to

be established.

SRPC vide letter dated 24.05.208 (Annexure-3Z) addressed to NTPC Talcher had requested to

ensure that the link is established. NTPC vide letter dated 05.06.2018 (Annexure-3AA) had

communicated the status in this regard.

In the Meeting it was noted that the Talcher RTU link to SRLDC had been established which was

confirmed by SRLDC.

NTPC letter dated 14.06.2018(Annexure-3AB) had informed that the direct communication of

SCADA data from NTPC/Kaniha to SRLDC, Bangalore has been commissioned.

3.15 Power Number for the year 2018-19

Power Number Calculation for SR states for the year 2018-19 (based on the actual consumption

and Maximum Demand figures during the year 2017-18) is at Annexure-3AC. It may please be

noted that this new power numbers would be used for frequency correction in PSP and other

reports.

The new power number are as follows :

AP: 301, TS: 328, KAR: 355, KER: 129, TN:524, Pudu:13. (Total SR: 1650)

mailto:[email protected]


In the Meeting, SRLDC informed that they had implemented the new power number in all their

calculations. States were requested to adopt the same in their computations.

3.16 P PA wise DC to be furnished by the IPPs

Earlier SRPC had informed that in line with CERC Order dated 31.08.2017 in Petition No

28/MP/2016 PPA wise DC has to be furnished by all ISGS. SRLDC vide letter dated

28.05.2018(Annexure-3AD) had requested all the IPPs in SR to furnish the PPA wise DC (as per

the format attached with the letter).

In the Meeting, SRLDC informed that the PPA wise DC was being furnished by all IPPs except

CEPL and they were pursuing it with CEPL.

CEPL representative informed that they would also furnish the PPA wise DC in the required

format.

3.17 PGCIL SR II Agenda Items

PGCIL vide letter dated 09.06.2018(Annexure -3AE) had submitted the following agenda items for

discussion in the meeting:

Shutdown proposal for major elements (400 kV Hosur - Somanahalli line, 230 kV Thirunelveli -

Edamon 1 & 2, Narendra ICT II, Kozhikode ICTs)

Eventual replacement of Kolar -Talcher PLCC with wide band (WB)

Relocation of SPS schemes

Extension of PMU data to RTAMCs

High Voltage in SR II

Frequent auto reclosing of Pavagada-Bellary I & II and 220 kV Kochi lines

In the Meeting, SR II informed that further delay had been occurred due to ROW issues. Hosur -

Somanahalli will come by 15th July 2018 and Dharmapuri - Somanahalli will come by 31st July 2018

if clear ROW is available.

KSEBL informed that Thirunelveli – Edamon I & II may be taken from 14th July 2018 to 19th July

2018. The dates were approved.

KPTCL approved the Narendra ICT outage.

Regarding Kozhikode ICT it was clarified that ICT II & III will be out on 24th June 2018 and ICT III

will be continued till 25th June 2018 (for ERS removal) .

The forum noted the process of shifting Kolar-Talcher PLCC with Wide Band (WB).

Relocation of SPS schemes: A comprehensive report on the SPSs to be shifted to Raichur and

SPSs being retained at Kolar would be furnished by SR-I and SR-II to all the states/UT, SRPC and

SRLDC. States would also communicate the corresponding load to the mapped to the respective

SPSs. The location of new DTPCs would also be coordinated in the exercise.

Frequent auto reclosing of Pavagada-Bellary I & II and 220 kV Kochi lines: KPTCL would

communicate to the respective transmission zone for improved maintenance of Pavagada-BPS


lines. Copy of the communication would be furnished to SRLDC/SRPC. Auto Reclose would be

kept enabled.

SR-II would furnish the Auto Reclose incidents for Kochi lines. KSEBL would revert back.

Extension of PMU data to RTAMCs: SRLDC would revert back on the request of specific PMU

data to RTAMC.

With respect to high voltages, SR II was requested to furnish specific requests and SRLDC would

consider the feasibility.

3.18 Coal Stock position

Coal stock position as on 11.06.2018 as uploaded in the CEA website.

ISGS Stations: NTPC Simhadri: 13 days, Kudgi:5 days, Ramagundam : 20 days, Talcher: 2

day, NTECL: 18 days & NTPL: 25 days

State Sector: AP: Krishnapatnam: 3 day, VTPS: 1 day, , RTPP: 3 days & HNCPL: 19 days.

SGPL: 15 days

Telangana: KTPP: 35 days, Kakatiya TPS: 13 days & KTPS New: 23 days

Karnataka: BTPS: 0 day & RTPS: 0 day.

TN: MTPS: 7 days, MTPS II: 13 days, NCTPS: 3 days, TTPS: 12 days

SRLDC pointed out that daily coal stock position was not being entered by the entities on the link

(https://goo.gl/y3LL4n). The information has to be furnished before 06:00 Hrs every day (it is

critical as the information is shared with MoP). It was also observed that the values available on

CEA web site and what SRLDC was receiving were not matching. It was noted that the absolute

quantum of the coal stock available should match. AP, all ISGS stations and Regional IPPs had

started uploading the information. TS, KPTCL and TN were also requested to kindly arrange for

the same.

After deliberations it was decided that SLDCs would ensure that the daily coal stock

position is uploaded on the link (though it may be delegated by the SLDCs to the respective

generating stations). SRLDC would follow up with SLDCs only.

In the last few OCC Meetings Generators/GENCOs were requested to furnish the issues with

regard to coal receipt ( Railways as well as Coal Companies ) so that Chairperson SRPC could be

requested to take up with Railway Board and Coal Companies/Ministry.

In the Meeting it was noted that only APGENCO and NTECL had furnished the railway

issues in respect of coal transport and therefore, this issue would be dropped for the time

being.

3.19 Compliance of CEA Regulations for Grid connectivity of Renewable Energy Sources

The following was the updated status on RE SCADA availability as noted in the 144th OCC

Meeting:

https://goo.gl/y3LL4n


SCADA availability as on 30.06.2018

Mapped I/C

Remarks

AP Wind: 3951.87/3977.87 MW (99.35%) Solar: 2147.88/2213.78 MW (97.02%) Total: 6699.75/6191.65 MW (98.52%)

Pending SCADA availability was for RE connected distribution level and for which action had been taken for compliance.

TS Wind: 100.8/100.8 MW (100%) Solar: 3126.62/3269.93 MW (95.62%) Total: 3227.42/3370.73 MW (95.75%)

Action for balance SCADA availability at 33 kV and below was being followed up and notices had been issued.

KAR Wind: 4398.895/4419.695 MW (99.53%) Solar: 4409.56/4848.55 MW (90.95%) Total: 8808.45/9268.25 MW (95.04%)

KER Wind: 16/59.3 MW (26.99%) Solar: 71.18/90.858 MW (78.34%) Total: 87.18/150.133 MW (58.07%)

TN Wind: 7988.96/8152 MW (98%) Solar: 648/1918 MW (33.79%) Total: 8636.96/10070 MW (85.77%)

Notices had been issued for SS under 10(1) for SCADA availability. 100% SCADA availability of wind would be ensured. TANTRANSCO (Communication) and TANGEDCO (Metering) had jointly initiated action for Solar SCADA availability and was targeted to be completed by July 2018.

A Special Meeting was convened under Chairmanship of Member Planning at Jaipur on

04.05.2018 on the Real Time data Availability of RE Generation. Minutes of the Meeting had been

circulated and are available at CEA website. The following may be noted:

100% data availability need to be ensured. The states to ensure that the target of 100% real time generation data is achieved in next two months.

The status of how many of the pooling stations are connected for communication of data and the percentage of availability of Communication link/system should be monitored and reported on a weekly basis.

States can also interact with Gujarat for installation of Radio Modems, which have helped them in data acquisition from remote locations.

States which are facing problems in achieving 100% communication of RE generation data could emulate the approach adopted by the States like Gujarat, Madhya Pradesh, Karnataka, Telangana etc.

Central Electricity Regulatory Commission (Communication System for inter-State transmission of electricity) Regulations, 2017 which have come into force w.e.f. 1.7.2017 should be followed.

3.20 Kudgi - RSD Procedure

It was noted that SRPC vide letter dated 16.04.2018 had furnished the comments TM/RSD

procedure to Hon‟ble CERC. NTPC Kudgi vide letter dated 19.05.2018 (Annexure-3AF) had

requested SRPC to kindly include the requirement of 35 hours for bringing back a super critical

unit from RSD in the feedback submitted to CERC in regard to detailed procedure on RSD.


In the Meeting, Kudgi NTPC requested to consider 35 hours time for cold start up and it can be

conveyed as feedback to Hon‟ble CERC.

MS, SRPC stated that there are two aspects on this issue. As per Hon‟ble CERC directives,

feedback on RSD procedure was to be communicated by NLDC while that on Compensation

Procedure by RPCs. SRPC had communicated the forum‟s views vide letter dated 16.04.2018.

Further station wise comments cannot be communicated and thus NTPC may need to present the

issue for all the NTPC stations through its Corporate .

After deliberations, NTPC, Kudgi informed that the requirement of 35 hours to bring back

the Kudgi super critical unit from cold start under RSD would be taken up through NTPC

Corporate with NLDC / CERC.

DE, TSTRANSCO recalled that they had desired to discuss and finalise the issues on RSD

procedure at a regional level as one states requisitioning pattern was affecting other states‟ share.

He requested that issues of TS & Kerala could be considered by NLDC in its feedback to CERC.

SRLDC & SRPC clarified that presently Regulations in vogue are being strictly followed (confirmed

by NLDC also and at all India level same practice was being followed). SRLDC assured that the

views of all the constituents would be conveyed to NLDC on RSD Procedure.

3.21 Daily Load Forecasting by SLDCs

SRLDC presented the error (forecast Vs actual demand) for the month of May 2018. It was

observed that on 3rd and 4th of May 2018 the variation was more w.r.t TS (33) and AP(23) and the

reason was reported as heavy gale and wind in AP and TS.

States had been requested to break the state load into sub components like district

wise/substation wise while carrying out the forecasting incorporating weather conditions etc.

3.22 Task Force Committee Report on Flexibilisation of Thermal Power Plants-Unit

identification for Pilot project demonstration

In the meeting in CEA held on 08.02.2018 it was decided six units, including two units of NTPC

and one unit each from DVC, GSECL, APGENCO, MSPGCL, would be taken up for 55 %

minimum load operation in line with the CERC notification.

APTRANSCO informed that APGENCO had agreed for any of the Rayalaseema unit for

flexibility (CEA letter 16.02.2018). APGENCO would be informing the same to CEA.

CEA vide letter dated 10.04.2018 had requested for Location of installed capacity of all current

renewable energy sources and location of anticipated RES installations by 2022.

All the states except AP were kindly requested to furnish the location of installed capacity of all

current renewable energy sources and location of anticipated RES installations by 2022.

3.23 Data required for development of Geospatial Energy Map of India

The data required (as per CEA letter dated 04.05.2018) for development of Geospatial Energy

Map of India was to be furnished to CEA at email [email protected] by all the concerned entities



latest by 31.05.2018. SLDCs were kindly requested to communicate the requirements to

DISCOMs and other entities in the control area.

3.24 Overarching Agreement

It was noted that Overarching Agreement in SR had been signed by all states in SR except Tamil

Nadu. In various forum of SRPC, constituents had been requested to make use Overarching

Agreement.

TN had been requested to also kindly sign the Agreement.

3.25 TTC assessment considering temperature dependent rating of lines/terminal equipment

NLDC need to share the status/correspondence in respect of TTC assessment considering

temperature dependant rating of lines/terminal equipment

3.26 Certification of availability of Transmission system of Inter State/RPC certified lines

SRLDC had pointed out that the inter-state lines were to be certified by the SLDCs of both ends

before submitting to SRLDC for verification. SLDCs agreed to coordinate in this regard.

3.27 Automatic Generation Control(AGC) (Refer Item No. 4 in the Minutes of 7th NPC Meeting)

In the meeting, KPCL had informed that M/s Andritz for Varahi and M/s ABB for Sharavathy have

been identified for the AGC implementation by USAID / PRDC for which, KPCL had given

approval. This was expected to be completed by December 2018. Further, AGC for 10 MW of

Solar project at Sivasamudram was also under consideration.(KPCL update at Annexure- 3AG

Simhadri, NTPC informed that the infrastructure readiness for AGC was likely to be in place by

August 2018.

3.28 Common Transmission System Data Base (Refer Item No. 5 in the Minutes of 7th NPC

Meeting)

In the 7th NPC Meeting held on 8th September 2017, NPC had emphasized the need for having an

accurate All India power system data base for carrying out accurate power system studies for

operational and planning horizons. POSOCO was to prepare requires formats and circulate to all

RPCs and in turn RPCs may obtain data from their constituents. It was noted that NLDC had

furnished the formats to NPC.

3.29 State-wise allocation of 540 MW power from RGPPL to Railways

Allocation of 50 MW to Telangana (SCR) and 100 MW to Tamil Nadu (SR) was to be

operationalized.

3.30 Monitoring of scheme funded from PSDF

In the 7th NPC Meeting (08.09.2017) and in the 6th Meeting of the Monitoring Group of PSDF

(05.01.2018), RPCs were further requested to examine the implementation of schemes in OCC &

TCC meetings and intimate NPC about any bottlenecks.

.All the states/entities were requested to kindly furnish the updated status in a time bound

manner.

3.31 PSS Tuning of generators

5th Meeting to review the status of PSS tuning of the generators had been convened on 26th July

2017 and minutes of the Meeting are available at SRPC website. All the generators need to follow

the action plan finalized in the 5th PSS meeting.


3.32 Prolonged Outage

KKNPP informed that tender for second reactor was opened in May 2018 and would be

commissioned by December 2018. SRLDC requested KKNPP to furnish the schedule of works

planned till commissioning of the reactor which was agreed by KKNPP.

3.33 Internet connection for Patch Management and Remote Diagnostics support for URTDSM

project

In the Meeting, it was noted that internet connection for patch management and remote diagnostic

support for URTDSM project would be settled mutually between SRLDC and SR-II.

4. Outage Proposals 4.1 ISGS/CGS Shut Down Proposals/ Rescheduling of Planned outages of Generating Stations

Outages of NPCIL Units in Peak Demand period

In the 143rd OCC Meeting, KKNPP had informed that Unit II will be coming on bar by 4th week of

June 2018. KKNPP was requested to follow-up the response to the Chairperson SRPC‟s letter to

CMD, NPCIL on the request of states to bring back the unit only in September 2018/or agreeing

for part load operation. TANTRANSCO had been suggested to take up the issue with KKNPP to

pre-pone the shutdown of Unit-I (requested from 21st July 2018) to avoid two units on bars during

the low demand period.

In the Meeting TANTRANSCO informed that they had taken up the issue with NPCIL vide letter

dated 11.06.2018 (Annexure-4A). The following options were requested:

To postpone bringing back the unit II into service till July end ie till availing shutdown of

Unit I

Avail AOH of Unit I once Unit II is brought into service

Ensure that either one unit only in service till September 2018 end and both the units to

be available from October 2018.

KKNPP informed that HQ, Mumbai would be responding on the letter and reconfirmed that the

Unit II is expected to be on bar by 28/29th June 2018.

The forum suggested that immediately after Unit II is back on bar, Unit I may be taken out and

KKNPP need not wait till July end. KKNPP informed that it is not possible to take out that Unit in

first week of July since fuel will be left out in the core and the full core cycle/core dynamics will

be affected,.

After deliberations KKNPP was requested to revive unit-II by 15.07.2018 and take unit-I for

maintenance around the same time since SR grid was having high ingress of renewables

along with lower demand. Operation of two units of KKNPP simultaneously on bar in June

& July could be possibly avoided.

Ramagundam Units VI and V(Annexure-4B)


NTPC vide letter dated 29.05.2018 had requested to concur for the rescheduling the Annual

Maintenance of Unit VI ( 01.07.2018 to 30.07.2018 against the approved date 01.08.2018 to

30.08.2018) and Unit V (16.08.2018 to 19.09.2018 against the approved date 15.06.2018 to

19.07.2018) based on the recommendation in the review Meeting held on 21.05.2018 under

Chairmanship of Secretary(Power).

In the Meeting the forum approved the shutdown of Unit V from 05.08.2018 to 08.09.2018 for 35

days. Unit VI shutdown was approved from 01.07.2018 to 30.07.2018. However NTPC was

advised to start the shutdown of Unit VI from 21.06.2018.

Simhadri Units (Annexure-4C)

In the Meeting, Simhadri Unit I outage was postponed to November 2018. Unit IV shutdown was

approved from 23.06.2018 to 27.07.2018 with the condition that Unit III revival on 16.06.2018

(out since 05.05.2018).

NLC TS II Unit VI(Annexure-4D) :

Vide letter dated 29.05.2018 NLCIL had requested for shifting of the Unit VI AOH to 11.06.2018

to 10.07.2018 against the approved date 01.06.2018 to 30.06.2018 due to delay in receipt of

spares.

In the Meeting, NLC informed that the outage would be availed for five days from 14.06.2018 to

18.06.2018 (Boiler License Renewal) which was approved by the forum.

Talcher Unit V(Annexure-4E)

In 141st OCC Meeting Talcher Unit V shutdown was approved was from 25.05.2018 to

08.07.2018.

In the Meeting the outage was approved from 16.06.2018 to 30.07.2018.

4.2 Request for approval of shut down of transmission elements

Non-availing the OCC approved shut downs

PGCIL, SR II had furnished their views on certain outage related issues which is given at

Annexure-4F

CT Ratio change request from SLDCs Powergrid

SR II had informed that incidents have come up wherein SLDCs are approaching PGCIL for CT

Ratio change. SLDCs were requested to approach RLDCs for needful instructions. New E-mail

IDs from SRLDC for intimating the system reconfiguration, restoration etc is awaited please.

NLC Complex: HTLS associated enhancement works

DGM, NLC informed that enhancement related works at NLC TS II were yet to be completed by

SR-II . SR-II agreed to carry out the HTLS associated enhancement works at NLC TS II.

4.3 LGBR for upcoming five months & TTC/ATC computations

All states were to kindly furnish PSSE base case for October 2018 and following is the status:


State 5 months

LGB

Converged

PSSE Base

case

ATC/TTC

Computation

furnished to

SRLDC

ATC/TTC

Computation

posted on

SLDC website

Nodal

Officer

Status

AP

All

Furnished

Not

submitted

No Nil No

TS Submitted Yes

KAR Submitted. No

TN Submitted Yes

KER Submitted Yes

In the Meeting, the following was noted:

DE, APTRANSCO informed that a DE has been posted for the Study Group while the supporting

staff was yet to be posted / join. It was suggested that DE and the supporting staff of the Study

Group could jointly undergo training at SRLDC. APSLDC assured that from July 2018 onwards

PSSE base case would be submitted.

SRLDC informed that in the HRD Training program of NLDC which is scheduled in July 2018 for

5 days , PSSE also would also be included.

States to update the network addition / modifications/RE generation/evacuation in the

PSSE base case.

SRLDC & SRPC pointed out that the demand being furnished for POC, ATC and LGB should be

in synch with each other. Different values should not be furnished for different requirements.

Node wise data should be as per the demand which is likely to be met from various sources

keeping in view MOD etc. Any tendency to increase the internal generation for POC computation

also needs to be avoided.

5. Availability and Requirement Availability and requirement for the period from June 2018 to October 2018 is given at Annexure-5A)

6. REVIEW OF THE POWER SUPPLY POSITION

Grid Highlights

Frequency remained within IEGC range during May 2018 (49.90 - 50.05 Hz) for 69.85% of

time. Average frequency for the month was 49.95 Hz.

Frequency remained below 49.90 Hz for 22.51 % of time during May 2018.

Frequency remained above 50.05 Hz for 7.64 % of time during May 2018.

187 MU of Wind generation recorded on 10.06.2018 in SR during this season.

12 MW(WM) & 4.004 MW(Solar) were added to Andhra Pradesh Installed Capacity(Private

Sector)

6 MW(Solar) were added to Telangana Installed Capacity(Private Sector).

1.25 MW(Solar) were added to Kerala Installed Capacity(State Sector)


Mock tests to check the healthiness of KKNPP and Talcher- Kolar SPSs were carried out on

21.05.2018 and for Raichur Sholapur SPS on 22.05.2018.

Talcher stage II SCADA data extended to SRLDC

Andhra Pradesh, Telangana, Karnataka & Tamil Nadu imported 191 MU, 537 MU, 281 MU, &

759 MU respectively intra-regionally through bilateral exchanges.

Andhra Pradesh, Telangana, Karnataka & Tamil Nadu exported 955 MU, 45 MU, 6.423 MU &

762 MU respectively intra-regionally through bilateral exchanges.

Utilities located in Andhra Pradesh, Telangana, Karnataka, Kerala, Tamil Nadu & Puducherry

imported 183 MU, 63 MU, 109 MU, 17 MU 200 MU & 0..00 MU respectively through Power

Exchange.

Utilities located in Andhra Pradesh, Telangana, Karnataka, Kerala, Tamil Nadu, SEPL, MEPL,

TPCIL, IL& FS & SGPL Unit I exported 51 MU, 744 MU, 127 MU, 32 MU, 24 MU, 88 MU,

08MU, 39 MU & 335 MU respectively through Power Exchange.

220 kV S/C line from Chakrayapeta to LILO point of 33/220 kV pooling SS in Animala of

25.662 Ckm was commissioned on 19.05.2018 by APTRANSCO.

220 kV D/C line from Chakrayapeta to Talamanchipatnam in Kadapa dist of 174.396 Ckm was

commissioned on 19.05.2018 by APTRANSCO.

220 kV D/C line for making LILO of existing one circuit of 220 kV Vemagiri to Undil ine at

proposed 220/132/33 kV SS Duvva in West Godavari district of 0.64 Ckm was commissioned

on 27.05.2018 by APTRANSCO.

220/132/33 kV SS Duvva in West Godavari district with 116 MVA capacity was commissioned

on 27.05.2018 by APTRANSCO.

220/132/33 kV SS at Chakrayapeta in Kadapa district with 100 MVA capacity was

commissioned on 19.05.2018 by APTRANSCO.

220 kV SS Tekkali in Srikakulam district of Existing 2x100 MVA was commissioned on

16.05.2018 by APTRANSCO with augmented capacity of 3x100MVA.

400 kV Gajwel to Ramadugu I 129.529 Ckm was commissioned on 06.05.2018 by

TSTRANSCO.

400 kV Ramadugu to STPP I 67.909 Ckm was commissioned on 06.05.2018 by TSTRANSCO

400 kV KTS – VII to Julurupadu I 39.08 Ckm was commissioned on 19.05.2018 by

TSTRANSCO

400 kV KTS – VII to Julurupadu II 39.08 Ckm was commissioned on 19.05.2018 by

TSTRANSCO

400/220 kV Gajwel SS in Siddipet district of existing 3 x 315 MVA was commissioned on

03.05.2018 by TSTRANSCO with augmented capacity of 3 x 315 + 1 x 500 MVA.

220/132 kV SS Gunrock in Hyderabad District of existing 2 x 160 MVA was commissioned on

24.05.2018 by TSTRANSCO with augmented capacity of 3 x 160 MVA.

220/132 kV LI SS Huzurabad in Karimnagar Dist of PTR I 100 MVA capacity was

commissioned on 14.05.2018 by TSTRANSCO.


SR II, Power grid vide letter dated 10.06.2018 (Annexure-6A) had informed that consequent to

the successful completion of Trial Operation, the following assets under “System

Strengthening-XII in Southern Region” have been put under Commercial Operation w.e.f 00:00

hrs of 1st April 2018 in terms of clause 4 of CERC (Terms and Conditions of Tariff

Regulations, 2014).

LILO of 400kV S/c Neelamangala – Hoody Transmission Line at new 400/220kV GIS Substation at Yelahanka with 1 x 63 MVAR 420 kV Bus Reactor along with associated bays & equipments.

2 x 500 MVA, 400/230kV ICT‟s along with associated bays and equipments at 400/230 kV Yelahanka Substation.

Transmission charges for the above assets are payable with effect from 1st April 2018

SR I, Power grid vide letter dated 07.06.2018 (Annexure-6B) had informed that consequent to

the successful completion of Trial Operation, the following assets under “Conversion of Fixed

line reactors to Swichable Line reactors in Southern Region” have been put under

Commercial Operation w.e.f 00:00 hrs of 24th May 2018 in terms of clause 4 of CERC (Terms

and Conditions of Tariff Regulations, 2014).

Conversion of 50 MVAR Fixed Line Reactor of 400kV Nellore-Thiruvalam –I line to

Switchable Line Reactor at Nellore S/s.

Conversion of 50 MVAR Fixed Line Reactor of 400kV Nellore-Thiruvalam –II line to

Switchable Line reactor at Nellore S/s.

Conversion of 50 MVAR Fixed Line Reactor of 400kV Kurnool PG – Gooty line to

Switchable Line reactor at Gooty S/s.

Conversion of 50 MVAR Fixed Line Reactor of 400kV Hyderabad – Gajwel S/c line to

Switchable Line reactor at Hyderabad S/s.

Transmission charges for the above assets are payable with effect from 24th May 2018

SR II, Power grid vide letter dated 10.06.2018 (Annexure-6C) had informed that consequent to

the successful completion of Trial Operation, the following assets under “Green Energy

Corridors: Inter State transmission Scheme (ISTS)- Part-A” have been put under Commercial

Operation w.e.f 00:00 hrs of 10th June 2018 in terms of clause 4 of CERC (Terms and

Conditions of Tariff Regulations, 2014).

2 x 400kV D/C (Quad) Tirunelveli Pooling Station- Tuticorin Pooling Station lines along with new 400/230kV GIS Tirunelveli Pooling Station with 2 x 125 MVAR 400kV Bus Reactors along with associated bays & equipments at 400/230kV (GIS) Tirunelveli Pooling Station & associated bays & equipments at 400/230 kV Tuticorin Pooling Station.

2 x 500 MVA, 400/230 kV transformers along with associated bays and equipments at new 400/230 kV (GIS) Tirunelveli Pooling Substation.

Transmission charges for the above assets are payable with effect from 10thJune 2018

7. GRID FREQUENCY

7.1 High frequency

It was noted that the Regional Grid had operated above IEGC range i.e.50.05 Hz for 7.86 % of the

time. It was also noted that the frequency on some of the days was higher for considerable duration

of times.(Refer Table-V of Appendix )


SRLDC informed that maximum frequency had touched 50.21 Hz at 18:03 hrs on 12th May 2018. It

was observed that during such instance drawal of all the SR States were within the limits (Graph at

Annexure-7A).

SRLDC noted that on 9th June 2018 there was heavy under-drawal by KPTCL. KPTCL informed that

there was a sudden injection of wind to 3,000 MW and solar to around 2,000 MW. All the thermal

units except two units at RTPS were taken out of bar. All ISGS power was also surrendered.

It was suggested that KPTCL may give due attention to more accurate forecasting and could sell

power during condition of high RE integration. KPTCL informed that PCKL was considering selling

power (subsequently it was noted that PCKL had started selling power from 13.06.2018).

Dy CE, KSEBL stated that some OA consumers are directly approaching Power Exchange for short

duration of time when PX rates are less and during other times they were availing power from the

DISCOMs. During last year KSEBL had suspended NOC of such consumers but they had

approached KERC and High Court with the prayer that NOC cannot be rejected on account of lower

demand. High Court had directed KERC to give a solution and Commission had stated that NOC can

be rejected only if there are transmission constraints. He observed that in Gujarat, GERC had

incorporated a clause that consumers can purchase power from Exchange only if they are taking

RTC power and also off peak quantum should not be more than peak purchase.

UPCL informed that various SLDCs had expressed their difficulties in maintaining load generation

balance due to huge variation in drawal by OA consumers on a daily basis.

Representative informed that the following modalities / procedure for granting OA to consumers in

states like Gujarat, Rajasthan and Himachal Pradesh to mitigate this problem as given below:

OA is granted on RTC basis and not for few blocks during the day.

Once consent is granted for OA, the consumers have to compulsorily purchase through OA.

For taking consent for OA for any particular day, the application were to be filed by the consumers

two days in advance. For taking OA for the whole month, the consumers have to file the O.A.

application by the 15th of the previous month.

Such conditions had helped Discoms to assess the demand supply in a more efficient manner.

It was suggested that the best practices of different states could be studied for further finalising a

procedure / guideline which could be implemented in the states after due approval of the SERCs.

DE, TSTRANSCO informed that they had also approached CERC with issues/suggestions on the OA

consumers power availing pattern affecting the operational planning.

NLC requested APTRANSCO to give NOC for the URS quantum for trading. APTRANSCO informed

that they were trading in Exchange where rates were higher.

SRLDC presented the underdrawal of states when frequency was above 50.05 Hz. (Annexure-7B).

The maximum Under-drawals touched by States during May 2018 also was presented. (Refer Table

VI of Appendix)

Constituents were advised to kindly avoid uneconomic operation at high frequencies. MS, SRPC

requested all the constituents that action needs be taken to adhere to the schedule since it had

commercial/operational impacts even for under drawals.

Pump mode operation at Nagarjuna Sagar/Srisailam and Kadamparai


• It was noted that there was a consumption of 13.47 & 62.3 MU in pump mode for N‟Sagar and

Kadamparai stations respectively during the month of May 2018.

7.2 Low Frequency

It was noted that the frequency of grid operation was at times lower than IEGC range. Grid had

operated below IEGC range i.e. 49.90 Hz for 12.76 % of time during the month.(Refer Table-VII of

Appendix)

SRLDC informed that minimum frequency touched was 49.57 Hz at 19:49 hrs on 26th May 2018. It

was observed that over drawals of Southern Regional states at such instance were within limit

(Graph at Annexure-7C).

Overdrawal by SR constituents at frequency less than 49.90 Hz (Annexure-7D) was presented by

SRLDC. The maximum over-drawals touched by States also was presented.(Refer Table VIII of

Appendix)

8. VOLTAGE PROFILE

8.1 Low voltage

In the Meeting, it was noted that low voltage was observed at few nodes in May 2018.

8.2 High Voltage

SRLDC highlighted the severity of high voltage problem in many of the nodes (Refer Table IX of

Appendix)

SRLDC informed that Srisailam Left bank units are not being operated in condenser mode.

TSTRANSCO informed that water level was not sufficient to keep the units in condenser mode.

8.2.1 Status review of GT Tap positions

GT tap Positions – GT taps yet to be changed as per recommendation (Refer Table-X of

Appendix)

8.2.2 Status review of Bus/Line Reactors, Line Reactors and STATCOM

Status of implementation of Bus / Line Reactors approved in the Standing Committee / SRPC

pending for commissioning by the SR constituents is furnished at Table XI of Appendix.

In view of very high voltage at some nodes, it was emphasized that urgent action needs to be

taken to commission reactors as per committed dates.

KGS was requested to furnish the milestone details for each activity to SRLDC & SRPC.

8.2.3 Reactive Power Planning

Status update on capacitor installation is given at Table XII of Appendix.

SRPC & SRLDC requested all the states to come up with updated information like till date

commissioned, plan for new commissioning, quantum in working condition, action taken to

rectify/replace faulty capacitors, etc.

8.2.4 MVAR Testing


Nodal Officers may kindly ensure that the data reaches SRLDC/SRPC in time (by fourth of every

month) so that SRLDC can correlate it with SCADA data and analysis could be done facilitating

actions for further improvement.

Recommendations finalized in the Special Meetings are required to be implemented.

All the SLDCs to kindly monitor VAR absorption/injection of generating units in their respective

control areas in real-time.

It was pointed out that in the Meeting held on 11.01.2018, Kaiga GS / NPCIL had agreed in

principle for MVAR testing of Kaiga GS units III/IV.

MVAR Testing summary

SRLDC had furnished the Summary of MVAR Testing carried out and concerned generators were

requested to furnish the status update on recommendation of MVAR testing at the earliest.

In the Meeting, SRLDC informed that during the MVAR testing was carried out on 3rd August 2017

as Singareni, tap change to 400 kV had been suggested. TSTRANSCO stated that they will

ensure the tap change during the next shutdown.

9 Network Protection/Security issues

9.1 U/F & df/dt Relays Schemes

Implementation of SRPC recommended quantum

It was noted that all the States had implemented AUFR and df/dt schemes fully.

In the Meeting, SRLDC presented the load relief realized as a percentage of AUFR quantum

declared in the identified feeders during the month of April 2018 as follows: (Detailed

Presentation is at Annexure-9A)

AP: 95 %, TS: 46 %, KAR: 61 %, KER: 91 %, TN: 80 %, Pudu: 91% &.SR : 72%.

UFR & df/dt relief visualization of TSTRANSCO was less. TSTRANSCO informed that the

mapping was being undertaken. It was agreed that mapping validation would be undertaken on

27.06.2018 (Wednesday) between SRLDC and TSSLDC. A report would be prepared and

communicated.

KPTCL informed that the average demand for last month was significantly less.

TANTRANSCO informed that 172 RTUs are being procured, commercial bid has been opened

and LOA will be placed. Commissioning schedule was one year from date of LOA.

9.2 SCADA mapping of feeders of AUFR & df/dt schemes

Status update as per SRLDC after validation of all the States is as follows:

State SCADA

mapped %

Status

AP 59 One RTU to be commissioned. Balance RTUs are

covered under OPGW scheme approved through PSDF.

TS 78 6 RTUs had been provided for Solar Generators and for 18 RTUs, procurement was being taken up and it could take 4-5 months. There were 18 RTUs for Interstate feeders and some would provide UFR and df/dt relief quantum also. There is an additional requirement of 11 RTUs for railway feeders also. With this they were likely to achieve 100% mapping.


KAR 101

KER 119

TN 105

Pudu 92

SR 87

UFR & df/dt relief mapping was less for AP, TS and Puducherry and they were requested to

furnish the action plan for improving the mapped figures.

AUFR/df/dt relay Inspection Report

SRPC vide letter dated 04.05.2018 had communicated the observations on the inspection carried

out on 02.05.2018 at Ranipet(SIPCOT), Thiruvalam, Mosur and Sholinghur substations of

TANTRANSCO. TANTRANSCO vide letter dated 07.06.2018 (Annexure-9B) had replied in this

regard.

In the Meeting, TANTRANSCO was requested to carryout AUFR /df/dt testing once in six months

as noted in NPC meeting. SRLDC suggested meeting of MRT officials to highlight the significance

of UFR and df/dt relays testing/calibration etc.

9.3 Automatic Demand Side Management Scheme (Petition No. 250/MP/2012) & GSES (Petition No.

265/MP/2012)

It was noted that all the states had implemented revised ADMS logic. (Alarm at 49.90 Hz and

below for 10 minutes, Trip at 49.85 Hz , Min DSM limit for 15 Minutes)

There were 107 incidences when frequency was below 48.85 Hz. The incidences which satisfy

the ADMS logic (OD<49.85 HZ.) were 13 in AP, 1 in TS and 9 in TN.

There was 1 incident each in AP and Karnataka of UD (>15 minutes) > 50.05 Hz.

SRLDC informed that the details of these incidences will be shared to respective states and

analysis on the same will be discussed in the next OCC.

9.4 Grouping of loads (IEGC clause 5.4.2 (e))

As per IEGC, to maintain the frequency within stipulated band and also to ensure network

security, the interruptible loads were 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 is no overlapping between different groups of

loads.

This issue was noted for compliance by the concerned utilities.

9.5 LVRT Implementation

Hon‟ble CERC had passed Order in respect of Petition No. 420/MP/2014 on 05.01.2016. Five

Special Meetings were conducted at SRPC on 05.02.2016, 18.04.2016, 05.07.2016, 25.10.2017

and 23.04.2018 (Meeting minutes are available at SRPC website).

Quarterly reports of the SR constituents jointly validated by SRLDC/SRPC Secretariat are being

communicated to Hon‟ble CERC with regard to monitoring of the installation and performance of

LVRT installed on existing WTGs as per the directives of Hon‟ble CERC.

CEA had issued draft second amendment in CEA (Technical Standards for connectivity to the

Grid) Regulations. The final notification is awaited.


10 Emergency Restoration System (ERS)

As per ERS requirement outlined in MoP letter dated 05.12.2014, status update on ERS is given

at Table XIII of Appendix.

In the meeting held under the Chairmanship of Secretary (Security) on 28th June 2017 it was

noted that ERS were in procurement stage in most of the states and the response from the states

was not very encouraging.

11 SCADA AND COMMUNICATION

A Special Meeting was held on 13.03.2018 to deliberate on pending SCADA/Communication

issues. Minutes of the Meeting is uploaded on SRPC website. The status of pending Items as

deliberated in the Special Meeting is at Table XV of Appendix.

SRLDC had invited attention of the forum that Hon‟ble CERC had brought out Order on Suo moto

Petition 007/SM/2014 dated 29.01.2016 regarding SCADA. SRLDC had started posting this

information from February 2016 on their website.

12 Implementation of URTDSM (PMU) project in Southern Region

Status update as per the Minutes of the Meeting held on 13.03.2018 is in Table-IV.

13 Black Start Procedure

All the concerned entities were requested to kindly furnish the details of BSRP Mock test

completed during May 2018 and schedule for next period ie July 2018 to December 2018.

In case of postponement or non-conducting of mock drill exercise then the same must be intimated

to SRLDC along with reasons.

13.1 Black Start Mock Drill

In the Meeting, SRLDC requested KPTCL plan the BSRP in respect of Nagjheri to BTPS. KPTCL

informed that they will furnish the detailed plan for the BSRP by month end.

BSRP mock exercise for inter-regional links will be submitted by SRLDC in the next OCC Meeting.

To discuss all pending issues with respect to Kaiga, a Special meeting will be convened on

22.06.2018 at Kaiga in which BSRP also will be discussed.

MAPS would conduct the mock drill under intimation to SRLDC/SRPC. It was noted that MAPS

unit-II BSD was planned during May/June 2018 shutdown. It was noted that unit I is under forced

outage from 30.01.2018.

14 RGMO/FGMO

RGMO response had been deliberated in various Special/OCC/TCC/SRPC meetings. Inadequate

response was an area of serious concern and there was no noticeable improvement.

Extension of RGMO status point to SLDC (Refer Table-VI of Appendix).

SRLDC vide letter dated 29.05.2018(Annexure-14A) had requested all SLDCs to furnish the list of

all hydro stations and gas stations which are covered under FGMO/RGMO response along with

the status clearly mentioning the CERC Order in case exemption/extension is received from

Commission may be furnished.

The communication for RGMO compliance by LANCO Stage I & II is at Annexure-14B


In the Meeting, SRLDC informed that even though SRLDC had taken up with individual generators

regarding the non-response/inadequate response for the incidence on 23.04.2048 only IL & FS

had replied back. Other generations were requested to kindly revert back.

NTPC, Simhadri assured that no Valve Wide Open (VWO) operation of units was being carried out

(23.04.2018 incidence was a rare one) on full or even part load, and shall ensure that there is

margin available for providing Governor Action as primary response.

As per 5th

Amendment to IEGC, gas stations above 50 MW Installed Capacity were also to come

under RGMO/FGMO Operation w.e.f. 1st

October 2017. SLDCs were requested to take action to

comply the Amendment. AP, TN and KSEBL (Kayamkulam) were requested to ensure compliance. AP

informed that LANCO Stage I & II had confirmed FGMO and they have requested to confirm RGMO

(Communication regarding this is at Annexure-14C). Other stations have responded that there were

no schedules, however the issue was being followed up. TN was requested to share the

communication taken up with their gas generators. SRLDC to ensure compliance of RGMO/FGMO by

LANCO units under its control.

All the SLDCs were requested to take up the issue of non-performance of RGMO/FGMO with MI with

the respective generators. A meeting of RGMO/FGMO may be convened in July 2018.

15 SYSTEM OPERATION ISSUES

Loadability of ICTs and revisit of the associated protection settings to prevent cascade tripping of

ICTs/high loading of transmission lines. Insufficient action in controlling the loading of ICTs leads

to N-1 criteria violation in compliance of Regulation 3.1 f(8) of CEA(Grid Standards) Regulations

2010 and Regulation 3.5 a(i) of CERC Indian Electricity Grid Code Regulations 2010.

Over loading of ICTs and N-1 violation at Hoody, Gazuwaka & Nellore was being observed.

16 Upcoming Generating Stations

Status update of Central sector and State Sector Upcoming generating stations is given at Table

XIV of Appendix.

SRPC stated that declaration of COD letter from SLDC was required to be submitted to CEA,

Fuel Management Division for purpose of coal linkages etc.

SRLDC stated that new ISTS connected units should come out with detailed metering schemes

for various units commissioning schedule, at least one year prior to synchronization. The scheme

needs to be discussed and finalized in the Commercial Sub Committee.

17 Wind Generation

SRLDC presented the day-wise Wind Generation pattern in Andhra Pradesh, Karnataka & Tamil

Nadu during the period 1st May 2018 to 31st May 2018. Wind generation in Andhra Pradesh had

varied between 22.86 MU (20.05.2018) to 4.09 MU (15.05.2018). Wind generation in Karnataka

had varied between 28.59 MU (29.05.2018) to 5.83 MU (05.05.2018). Wind generation in Tamil

Nadu had varied between 83.23 MU (30.05.2018) to 1.92 MU (05.05.2018). (Annexure-17A).

18 Vote of Thanks

MS, SRPC thanked all the participants for their active participation in the Meeting.

19 Date & Venue of the next Meeting

The schedule for the next OCC Meeting is as follows:

Meeting : 145th OCC of SRPC

Date : 17.07.2018 (Tuesday)


Time : 10:00 Hours

Venue : Bengaluru

Appendix Follow up Issues

ROW issue of 400 kV

Nelamangala-Hoody Line/

commissioning of 400 kV

Yelahanka substation/220 kV

evacuation system of KPTCL

at Yelahanka substation.

PGCIL: S/s commissioned on 22.03.2018 by PGCIL, SR II

KPTCL: 6/16 sections (4.5 kM out of 5.9) cable laying completed

from Yelahanka station end. Commissioning of the cable from

PGCIL SS to KPTCL SS at Yelahanka is expected by July 2018.

REMC Project

03 modules of Training programs at contractor's premises are

completed & 4th & 5th are to commence from 25.06.18

VC facility Puducherry to take up VC requirement in 2018-19

Completion of Kamudhi bays

at Karaikudi by PGCIL

First bay charged.

Works are completed. Ready for commissioning.

Operation of Nagarjunasagar

/ Srisailam / Kadamparai

units in pump mode

Srisailam, Maximum 4 Units are being put in pump mode

operation simultaneously. Since there is some pressure issue

more than four at a time is not possible at present even though

all the 6 units are capable of operating in pump mode.

Only 3 units at Nagarjunasagar can be operated simultaneously

due to some constraints in suction side of the water conducting

system.

Condenser mode of

operation of Nagarjunasagar

and Srisailam LB

All the 6 units at Srisailam operated in condenser mode at

different times. During day time four units together also had been

operated in condenser mode.

At Nagarjunasagar all the units except Unit IV and VI put in

condenser mode and four units simultaneously also being

operated at condenser mode.

Closing of 220 kV Upper

Sileru- Balimela line

Idle charged from 8th January 2015 from Upper Sileru end.

PMU Status

All the States were requested to give the requirements for

Second Phase to CTU. KSEBL & APTRANSCO had submitted

the requirement.

Priority for Railways/Metros

in the matter of Restoration

of Supply

TSTRANSCO had informed that meters/communication

equipment‟s are being procured.

TANTRANSCO had informed that TANGEDCO was to enter into

the Agreement.

TABLE – I

Number of Outages approved V/s Availed

Status of shut down availed vs shut down approved as furnished by states is as below:


TTABLE – II

Status of shut down availed against shut down approved as furnished by SRLDC is as below:

AP KAR UPCL

KER MEPL NLC NPCIL

NTPC SR I SR II TN TS RSTCL

SR

56 60 0 100 0 50 100 60 55 71 40 70 0 57

In the Meeting the following was noted:

SRLDC informed that in the analysis they had put an effort to incorporate comments received

from constituents/Powergrid/Generators. SRPC/SRLDC expressed concern on the low

percentage of availed shut downs in respect of AP, KAR, TN and SR I

DE, APTRANSCO informed that they have availed 22 outages out of 39 whereas per SRLDC

availed is shown as 17 only. 3 outages had been availed on line and two more also carried out

which is not accounted in SRLDC report. APTRANSCO had requested to delete 3 LCs in the mid

review proposals. 3 LCs were not carried out due to load constraints. Considering all these

(availed become 29) percentage will become around 69. Details at Annexure-I

EE, KPTCL informed that two outages were not availed due to rains. SE(O), SRPC suggested

that ICT maintenance may not be scheduled during Monsoon season until unless in emergency

conditions.

UPCL ICT outage was not availed since both the units were on bar. UPCL informed that many

times their proposals were deferred by KPTCL.

MS SRPC suggested that earlier ICTs flow were more and shut down was not possible without

backing own of generation, and now flow had come down and also one unit is out.

KPTCL agreed for shut down of ICT during June 2018.

TANTRANSCO informed that many shut downs were not carried out because of man

power/contractors issues. Some shut downs were differed due to Exams. Kayathar ICT I was not

availed since ICT II was already in outages. (details at Annexure-II)

MS SRPC expressed that planning should be done seriously after assuring man power availability

and analyzing network conditions and power supply requirements. In TANTRANSCO monthly

OCC Meetings are also being conducted in which outages also is a part of discussions.

SR I informed that 9 shut downs were deferred in real time. OSD were also there.

SR II informed that OSD shutdowns were informed to SRLDC which was not considered in

calculation.

State/Utility AP TS KAR KER TN SR I SR II

No of shut downs approved

39 20 05 26 43 29

41

No of shut downs carried out as per schedule

22 15 03 18 20 27 6

No of shut downs deferred 17 05 02 08 23 02 35

Percentage of shut down carried out

56 75 60

69 54 93 85


TSTRANSCO informed that 4 shut downs only were not availed. Two were taken under OSD

which was informed to SRLDC. Availed percentage is around 70.

After deliberations the following were concluded:

There was some discrepancies in the availed outage percentage as computed by SRLDC

and as claimed by the entities. It was agreed that SRLDC would communicate the availed

percentage, the entities would revert back with observations and SRLDC would validate

and verify and communicate the availed percentages which would be discussed in the

OCC meetings. The outages deferred by NLDC / SRLDC / SLDC on grid / system /

transmission constraints and the outages availed on opportunity (before the scheduled

date) would be removed in the approved list.

Availed percentage of OCC approved shutdowns will be calculated based on approved

dates in the OCC and actual availed. Procedure for cancelling the shutdown before D-3

would be continued.

TABLE III PSS TUNING

SRT of following units had been analyzed upto 5th Meeting of PSS and necessary action had to be taken

as per Recommendations

Entity Generating Stations/Units

APGENCO Rayalaseema TPS U1 to U5; VTPS U1 to U4 & U7; SDSPP U1&U2;

(To be anlysed)Srisailam RB HEP U1 to U7; Lower Sileru HEP U1

AP IPP HNPCL U1 & U2

TSGENCO Nagarjunasagar HEP U1 to U8; Srisailam LB HEP U1 to U6;

Kakatiya TPS U1 & U2; Kothagudem TPS U 7&8(Report to be

analysed) U10 & U11; Singareni Collieries U1 &U2 (Reports to be

analyzed)

KPCL Raichur TPS U1,2,3,5,6,7& 8; BTPS U1 to U3; Varahi UGPH HEP U1

to U4; Nagjheri HEP U1 to U6 (U6 report to be analyzed); Sharavathy

HEP U1,2,3,4,5,6,7,9, 10 & 8 (Report to be analyzed), Raichur TPS

U4 (Report to be analyzed)

KAR IPPs UPCL U1 & U2; JSWEL U1 to U3

KSEBL

TANGEDCO MTPS-I U1 to U4 (U1 Report to be analyzed); NCTPS St-I U1 to U3;

Tuticorin TPS UI(Report to be analysed)U2 to U5; NCTPS St-II U1;

Kadamparai HEP U1 & U2, Mettur-II (Report to be analyzed).

TN IPPs

CGS NTPC- Ramagundam U7 & U4 (reFport to be analyzed); NTPC-

Simhadri U1 to U4; NTPC-Talcher STPS St-II U3 to U6; NTECL-

Vallur TPS U1 to U3; NLC-Neyveli TPS II U4 to U7; NLC-Neyveli

TPS II U1 to U3; KGS U2 (Report to be analyzed); NPCIL-KKNPP U1

& U2 (Report to be analyzed) ;NLC-Neyveli TPS II Exp. U1 & U2;


(NLC & TN JV) NTPL U1; NTPC-Kudgi U1

ISTS connected IPPs TPCIL U1 & U2 (U2 Report to be analyzed); Coastal Energen U2; IL

& FS U1 & U2

For the following Units, PSS is to be tuned and SRT to be carried out / information not available.

Entity Generating Stations/Units

APGENCO VTPS U5 & U6; Lower Sileru HEP U2 to U4

AP IPPs

KPCL Yeramarus TPP

KAR IPPs JSWEL U4

KSEBL Idukki HEP U1 to U6

TANGEDCO NCTPS St-II U2; Kadamparai HEP U3 & U4

TN IPPs STCMS

CGS NTPC-Ramagundam U1, U2, U3, U5 to U6; NTPC-Kudgi U2; NLC-

Neyveli TPS I Exp. U1 & U2 (SRT reports not submitted); NPCIL-

KGS U1, U3 & U4 ( Full Report not submitted for U4); NPCIL-MAPS

U1 & U2;

ISTS connected IPPs Coastal Energen U1; Lanco Stage II & III; SGPL-Nellore; SEL U1 to

U4; MEL U1 & U4

Table IV- URTDSM UPDATES

Status as on 13.03.2018 Meeting Remarks

URTDSM Status Region: Approved/Installed/Integrated/Validated SR I SS 27/25/24 SR I PMU 113/104/98 SR II Supplied -: 142 Installed-:142 Integrated-: 142 Ready for validation-:140

Kaiga to extend the digital status

Supply and installation of APS- Auxiliary power supply system as part of URTDSM project

SR-II had intimated that the Auxiliary Power Supply

System is under manufacturing and is expected to

reach site by 20thApril 2018 and commissioning will

be completed by 15th May 2018

AP and TS had expressed concern regarding delay

in supply of Auxiliary power supply system. SR-I

Will be supplied by 31.07.18


confirmed that the APS System is expected to reach

site in April 2018 and commissioning was expected

by May 2018.

Status of SAT and SAVT of URTDSM project in SR

SRLDC - SAT completed and SAVT is yet to commence. KSEBL - SAT and SAVT completed. KPTCL - SAT and SAVT completed. TNEB - SAT completed and SAVT is yet to commence TSTRANSCO - SAT completed and SAVT has commenced from 1st March 2018 APTRANSCO – SAT at SLDC completed

Will be commenced from 10.06.18

Powergrid Analytical Application installed as part of URTDSM

All the control centers were requested to use the software and report the deficiencies.

PGCIL had agreed to make a Web group of all the Control Centers, LD&C, IIT Mumbai, SR-I/SR-II etc for exchanging the information/usage and for deficiencies / rectification etc.

Table -V: Frequency was higher than 50.2 Hz.

Date

Percentage of time of Frequency

50.05 Hz &<50.2 Hz More than 50.2 Hz

01- May -18 19.34 0.00

02- May -18 24.62 0.00

03- May -18 30.16 0.00

13- May -18 15.42 0.00

14- May -18 20.75 0.00

20- May -18 7.59 0.00

25- May -18 7.60 0.00

28- May -18 8.19 0.04

29- May -18 9.19 0.00

High frequency excursions w.r.t. 5.2 (j) of IEGC during load change over and remedial measures to arrest such instances

All SLDCs/constituents were again requested to kindly adhere to the Regulations in place.

Following remedial measures to arrest high frequency operation in the Grid were noted:-

Implementation of staggered load changeover by the constituents/DISCOMs

Moderating own generation

Restricted Governor Mode of Operation of all eligible machines to be in place

Proper load management to prevent the sharp rise in frequency

ADMS healthiness

Exploring the possibility of running the units in pump mode

Planned and advance intimation for surrender of ISGS

Reduction in purchases/MTOA/STOA transactions


Table VI: The maximum under drawal touched by States are as follows:

State MW Duration Date

AP 796 15 27.05.2018

TS 698 05 31.05.2018

KAR 795 26 12.05.2018

KER 540 34 02.05.2018

TN 792 28 29.05.2018

Table VII: Frequency less than 49.90 Hz for significant duration.

Table VIII: The Maximum over drawal touched by States are as follows

State MW Duration Date

AP 741 26 30.05.2018

TS 680 32 17.05.2018

Date Percentage of time of frequency

<49.2

Hz

49.2 Hz &

< 49.5 Hz

49.5 Hz &

< 49.7 Hz

49.7 Hz &<

49.8 Hz

49.8 Hz

&

< 49.9 Hz

04- May -18 0.00 0.00 0.00 0.21 15.63

05- May -18 0.00 0.00 0.86 5.74 25.26

07- May -18 0.00 0.00 0.00 4.57 21.52

08- May -18 0.00 0.00 0.00 0.71 12.86

09- May -18 0.00 0.00 0.09 5.04 22.82

10- May -18 0.00 0.00 1.01 10.61 42.65

11- May -18 0.00 0.00 0.10 2.57 25.50

12- May -18 0.00 0.00 0.00 1.10 16.66

15- May -18 0.00 0.00 0.00 1.47 18.04

16- May -18 0.00 0.00 0.34 5.66 32.81

17- May -18 0.00 0.00 0.00 0.42 19.64

18- May -18 0.00 0.00 0.56 7.98 32.48

19- May -18 0.00 0.00 0.38 7.23 36.13

20- May -18 0.00 0.00 0.00 0.52 11.64

21- May -18 0.00 0.00 0.45 6.64 21.61

22- May -18 0.00 0.00 0.65 6.03 31.92

23- May -18 0.00 0.00 0.00 1.59 20.31

24- May -18 0.00 0.00 0.00 0.98 15.60

25- May -18 0.00 0.00 0.00 0.83 10.68

26- May -18 0.00 0.00 1.75 12.69 26.17

27- May -18 0.00 0.00 0.00 2.23 13.75

28- May -18 0.00 0.00 0.00 3.70 21.51

30- May -18 0.00 0.00 0.00 3.68 23.96

31- May -18 0.00 0.00 0.74 8.14 33.14


KAR 516 17 17.05.2018

KER 345 67 22.05.2018

TN 787 24 01.05.2018

Table: IX: High Voltage Nodes

Table-X - GT Tap: Recommended/Implemented

Station

Unit Present Tap

And

Corresponding

Voltage(In kV)

Recomme

nded Tap

And

Correspo

nding

Voltage(In

kV)

Remarks

ISTS connected Generators:

STATION

MAX VOLTAGE IN KV

AVERAGE DURATION IN

MINUTES PER DAY WHEN

V > 420 KV/ V > 780KV

Vijayawada 426 376

N‟ Sagar 426 318

Hyderabad 424 145

Gooty 431 741

Kurnool 427 586

Khammam 430 364

Vemagiri 423 41

Srisailam 435 898

Hiriyur 435 639

Guttur 429 226

Raichur 427 265

Kaiga 425 167

Narendra 428 244

Pugalur 424 191

Malkaram 435 1041

Sattenapally 428 311

Almatty 431 515

Mysore 436 376

Hassan 431 305

Mehaboobnagar 435 1158

Raichur TPS 807 88

Kurnool 765 808 127

Tiruvalam 765 852 295

Nizambad 765 814 312

Srikakulam 765 808 196


Kaiga I 1 & 2 6 & 229.125 7 & 223.25 MVAR interchange as per

Special Meeting to be ensured. Kaiga II 3 & 4 3 & 409.5 4 & 399

APGENCO/APSLDC

IPPs of AP It is recommended that all IPPS under APSLDC could be advised to

change their Tap position corresponding to voltage level of 400 kV / 220

kV.

KPCL/KAR SLDC

Sharavathi 9 & 10 2 & 231 4 & 220 First GT (9) reached during

October 2017. Second GT

reached during December 2017.

Unit 10 GT erection works

completed. Tap change would

be carried out after receiving the

ICTs.

UPCL 1 & 2 4 & 409.5 5 & 400 Observed rotor teeth

temperature issues.

2 x 125 MVAR reactors agreed

in 39th SCPSPSR. 41st ……

It was suggested that their

MVAR absorption should be

around 50-60 MVAR in case

they are not able to change

Tap.

TANGEDCO/TN SLDC

Tuticorin TPS 1,2,3,4

5

8 & 243 230 All the GTs in TTPS are kept in

Tap No. 10.

MTPS St.III 1 6 & 409.5 7 & 399 Provision of Bus Reactor is being

carried out by

GCC/TANTRANSCO, Salem.

After the provision of Bus

Reactor the GT Tap will be

increased to 7(399 kV) from Tap-

Reactor bay works were

completed at present and

allotment of reactor is awaited.

Table –XI- Reactor Installation Status

As per of 33rd SRPC

Entity Bus Name Status REMARKS

KPTCL

Hoody Reactor erected on platform. March 2018

Nelamangala Reactor erected on platform March 2018

Entity Bus Name Capacity in MVAR

Approved in

Type Remarks

PGCIL Yelahanka 2x63 Bus Deferred as per 40th


SCPSSR. When

Madhugiri line will come it

will be expedited.

Cuddapah 50 to 125 39th SC Yet to be awarded

APTRANSCO

Vemagiri 125

36th SC

Bus Vemagiri and Kurnool is

commissioned on

05.03.2018 and

13.03.2018 respectively.

Kalpakka – will be

completed by June 2018.

Erection works are under

progress.

Techniical sanction is

under progress Chittoor

Reactor. Tender process

will proceed.

Kurnool 125 Bus

Kalpaka 125 Bus

Chittoor 125 39th SC

Vijayawada 125 39th SC

It was noted that a

separate reactor at

Vijayawada in scope of

AP had been identified.

The exact location could

be firmed up by

APTRANSCO.

APTRANSCO/

APGENCO

VTPS Stage

IV 125 39th SC

APGENCO informed that

reactor enquiry was being

taken up.

It was noted that this

reactor was different from

the APTRANSCO reactor.

KPTCL

Davangere 125 39th SC 41st SCSPSRR: Members

agreed with already

approved additional

reactors of 1x125 MVAR

(400kV) each at

Talaguppa and

Davangere 400/220kV

Substations.

Talguppa 125 39th SC

TANTRANSCO

Almathy 125 39th SC Specification Under

Process Manali 125 39th SC

Kayathar 125 39th SC

TANTRANSCO

/ TANGEDCO Mettur 125 39th SC

To be diverted from

Palavadi and works to be

taken up.

TSTRANSCO Mamidipalli 125 36th SC

Bus

Commissioned on

23.02.2018 at 14:31 hours

TSTRANSCO/

TSGENCO Srisailam LB 125

41st SCPSPSR: After

deliberations, it was


39th SC

agreed that TSTRANSCO

will submit the requisite

data for system study to

CTU. The CTU, after

carrying out studies will

forward the results to CEA

and TSTRANSCO. The

requirement will be further

discussed and finalized in

a Joint Meeting.

NPCIL Kaiga 2 x 125

Bus

One reactor by December

2019. Financial approval

had been received. They

were in the process of

floating the tender.

UPCL Udupi 2 x 125

39th SC

41st SCPSPSR: It was

informed that the

requirement was

assessed based on

system studies, therefore,

it was decided that the the

decision taken in 39th SC

Meeting may be

implemented.

Regional entities to implement the steps to contain the rise in the voltages in their respective

control area stations as given below:

Ensure Bus reactors and Line reactors are switched in.

Capacitor banks especially at high voltage areas are switched off.

Optimizing the GT and ICT tap positions as per the advice of SRLDC/SRPC.

Tap optimization at lower voltage levels to be carried out by STU/SLDC in coordination with

DISCOMs.

All the generating units on bar to absorb reactive power as per their capability limits.

Operate generating units on synchronous condenser mode for VAR absorption, whenever

feasible.

Release loads in high voltage areas keeping in view the drawl of the control area.

Maintain drawl from grid close to schedule.

Operate available hydro units on pump mode in high voltage nodes keeping in view the drawl

of the control area.

Load re- arrangement, wherever feasible, may be taken up to optimize loading on trunk lines.

Line opening would be the last resort by SRLDC after receipt of message from the

constituents.

Concerted action/follow up by SLDC.

Table XII- Capacitor Installation

Utility Reactive Power Planning Voltage level

Remarks


APTRANSCO

Kadapa: 244.8 MVAR

Vijayawada: 122.4 MVAR

Visakhapatanam:158.0

MVAR

On 33 kV

side

0 MVAR commissioned

0 MVAR commissioned

0 MVAR commissioned

APSPDCL 640 MVAR 02 MVAR commissioned

APEPDCL 276 MVAR 54 MVAR commissioned.

KPTCL Bengaluru Tr. Zone:784

MVAR

12.1 kV LOA issued. 30 MVAR Installed

Bagalkot Tr. Zone :258.1

MVAR

12.1 kV Material supplied. Erection

completed/under progress. 78.3

MVAR Installed

Hassan Tr. Zone 150.8

MVAR

Material supplied. Erection

completed/under progress. 43.5

MVAR Installed

Mysore Tr. Zone :60.9

MVAR

60.9 MVAR commissioned

Gulbarga Tr. Zone :98.60

MVAR

Installed Nil

Tumkur Tr. Zone :281.3

MVAR

12.1 kV 46.4 MVAR commissioned. 34.8

MVAR EI approval awaited.

Telangana TSNPDCL: 259 x 2 MVAR

TSSPDCL :110x1 MVAR

105 x 1 MVAR commissioned

97 x 1 MVAR commissioned.

KSEBL

360 MVAR

66 kV Works will be taken up after

approval. 11kV

TANGEDCO 34 x 2.4 MVAR 11 kV

16 x 2.4 MVAR 22 kV 16 x 2.4 commissioned

59 x 2.4 MVAR 11 kV IPDS tender to be opened on

30.11.2017

19x2.4. MVAR 22 kV IPDS tender to be opened on

30.11.2017

13 x 2.4 MAVR 110 kV PO placed on M/s Shreem

Electric Limited.

53 x 2.4 MVAR 11/22 kV RAPDRP tender to be floated

101 x 2.4 MVAR 11/22 kV Erode region: Tender to be

floated

32 x 2.4 MVAR 11/22 kV Vellore Region: Tender to be

floated

82 sets of 11 kV, 2.4 MVAR

Capacitor Banks in

Coimbatore Region

11 kV BLTC note for price bid opening

to be submitted.

822 MVAR capacitors at

Distribution level had been

commissioned out of 931

MVAR capacitors planned.

Balance 109 MVAR to be

commissioned. However, for

further enhancement of

Reactive Power, Capacitor bank

provisions have to be arranged

by Planning/Transmission

wings.


Table –XIII- ERS status

Transmission Utility

Requirement as per MoP

Existing Status/Remarks

APTRANSCO 3 2 ERS III- In the Meeting

APTRANSCO informed that

Proposal for PSDF fund had

been rejected and is planned

to procure under R & M

works.

TSTRANSCO 1 Being retendered.

Subsequently, it would be

taken up for PSDF funding.

KPTCL 2 2

KSEBL 1 Tenders to be floated. Being

followed up.

TANTRANSCO 2 As per Minutes of BLTC held

on 03.01.2017, Procurement

is put on hold PED NIL NIL

PGCIL 4 (2 Nos.

Additional)

4 (SR I &

SR II is

having 2

no. Each)

765 KV ERS (one each for

SR-I and SR-II) tendering

under progress.

Table –XIV- Generating Units- Under Progress

Central Sector

Station Unit Installed Capacity

MW

Scheduled date of synchronizing / commissioning

Remarks

NTPC

Kudgi TPS Stage-I

I,II, III

3 x 800= 2400

Unit-I CoD from 31.07.2017 Unit-II. CoD from 31.12.2017 Unit–III COD in July 2018

72 hours continuous test was carried out from 00:00 hours of 30th April 2018.

Telangana STPP Phase I

2 x 800 U-I CoD May 2020 U-2 CoD November 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

30th TCC: NTPC informed that the domestic coal was yet to be tied up. APTRANSCO informed that they would apply for LTA with CTU after the coal linkage is firmed up.

NLC

New Thermal Power Project

I 500 First Synchronisation by Aug 2018. COD by October 2018

CTU had 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. Araliyur S/S was being developed by TANTRASCO and was expected by June 2018

II 500 First Synchronisation by October 2018. COD by December 2018

NPCIL

BHAVINI

Kalpakkam (PFBR)

I 500 Synchronization by 2017-18 COD by 2017-18

KKNPP III & IV

2023 & 2024

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

NEW PROJECTS OF STATE SECTOR & IPP

Sl No

Name of project Located in

Capacity in MW

Commissioning Schedule /Remarks

1 Rayalaseema TPS ST-IV

AP 1 x 600 2017-18

2 Dr. NTTPS, Vijayawada

AP 1 x 800 2017-18

3 Krishnapatanam Stage II (U3)

AP 1 x 800

4 Polaki AP 4000 (5 x 800 MW)

5 Edlapur KAR 1 x 800

6 North Chennai Stage III TN 1 x 800 2019-20


7 North Chennai Stage IV

TN 2 x 800 Beyond 2019-20

8 Ennore TPS Exp TN 1 x 660 2018

9 Ennore replacement TN 1 x 660 2018

10 Udangudi Stage I TN 2 x 660 2019-20

11 Uppur TPP (TBCB) TN 2 x 800 2019-20

12 Manuguru PPP Telangana 4 x 270 U1 : 20.03.2017 U2: 20.05.2017 U3: 20.09.2017 U4:20.09.2017

13 Kakatiya TPP Stage III Telangana 1 x 800 2017-18

14 Kothagudem TPS Phase VII

Telangana 1 x 800

15 Damaracherla (Yadadri)

Telangana 5 x 800 2018-19

IPPs

Sl No.

Name of project Located in

Capacity in MW

Commissioning Schedule /Remarks

1 Meenakshi PH-II AP 2 x 350 2017-18 Untied: 640 MW

2 East Coast Energy Thermal

AP 2 x 660

2017-18 AP : 300 MW

3 Thermal Powertech (TPCIL) Unit-III

AP 1 x 660

2017-18

5 Godhna TPP, Janjir – Champa Dist, Chhattisgarh

For KAR 2 x 800 2017-18

Table XV-SCADA/Communication

Update as per Meeting on 13.03.2018 Latest update

ICCP link failure/not stable

ICCP link failure/not stable

There should not be any license renewal issues during

the project cycle of the project and it needed to be ensured by Control Centers (through M/s GE).

Updated communication network diagram to be submitted by SR-I and SR-II to all SLDCs & SRLDC. Further any changes done in the communication network needed to be informed to all.

SR II informed that Necessary standby channels are made available and updated communication network is ready and shall be sent in this week

Frequent data outage(State Sector/Central Sector)

PGCIL to share their observations for communication failure on the instances of data outage beyond 8 hrs put up by SRLDC.

PGCIL to share all fibre cut/equipment outage information in real time.

DCPC at Narendra is faulty which is being attended by

SR II : Complied and all communication failures are being informed timely to SRLDC


GE(SRLDC to follow up)

Data outage after commissioning

Cross checking to be done with site daily values for newly commissioned elements for a period of two week duration from commissioning.

SR II : Complied and

SRLDC may check and

intimate any failures

Data discrepancy

SRLDC to delete the points which are not feasible to be telemetered.

RTU/SAS Maintenance/Upgradation

All states/Powergrid/CGS to explore option of replacement of old RTUs and AMC for SAS, as getting spare is difficult for old RTU.

AMC need to be provided for all RTU/SAS gateways by CTU/STU.

A life/functional assessment report and action plan by PGCIL/ISGS on old RTUs would be prepared and submitted to SRLDC/SRPC.

POWERGRID, SR-II does

not feel to have AMC for

SAS stations. However, the

conventional RTUs,

commissioned during 2001-

02 are proposed to be

upgradated / replaced. The

offer obtained from GE for

upgradation and process to

be initiated

Backup Control Centre

Backup SCADA functionality testing frequency needs to be done once in 6 months to ensure high availability of data/preparedness to operate from Back up CC in event of any contingency. Compliance report may be furnished to SRLDC.

Periodical testing was being carried out by SRLDC and KSEBL.

TN stated that communication network is being strengthened to Backup CC. Once same is completed, TN will do the testing.

PGCIL would be floating new combined Open Tender for Backup SLDCs for AP (Tirupati), TS (Warangal) along-with few other states.

Backup control centre establishment for AP & TS need to be expedited.

ICCP with NTAMC

PGCIL had confirmed that due to cyber security concerns data would not be extended to SRLDC from NTAMC ICCP.

Functional requirement of the requisite data by SRLDC would remain, which needed to be ensured by PGCIL. SRLDC would furnish the list of telemetry points that have to be extended to PGCIL within 10 days, and within 1 month PGCIL would come out with a detailed plan to be completed within 6 months (October 2018)

SR II : Additional data points have been received from SRLDC and action is being taken to extend the inputs by Oct' 18


Modification of EMS package

TSTRANSCO had received estimate of Rs 47 lakhs and

the contract was being firmed up.

SRPC had requested that PGCIL to render assistance to

TSTRANSCO as requested by them if possible.

Sparing of Fibre in Central Sector Project

TANTRANSCO had again requested for sparing of fibre in

Central Sector Project. SR-II stated that request for

sparing of fibre in new FO links could be communicated

for consideration.

SR II : Once again taken

up with higher

management and is

under review

VC issues

TSTRANSCO Video Conference issue at TSSLDC. There

was disturbance in Video Conference at TS end when

connected to SRLDC.

TSSLDC and SRLDC were requested to coordinate and sort out the issue.

Table-XVI

RGMO status extension to SLDC/SRLDC

State/Entity RGMO Status extension to

SLDC/SRLDC

Comment

TS Thermal updated. Hydro

Manually updated at the

TSSLDC

TSTRANSCO is requested to take up the

issue with GENCO and solve the issue

KAR RTPS-4, Supa and LDPH RTPS Unit IV: will be made available during R & M works.

LDPH: Carried out the works. Complete wiring is over. Extended upto SLDC.

Supa: yet to be carried out.

KER Sholayar Sholayar: One unit is out of service and is

undergoing Renovation and RGMO/FGMO

with MI will be available when the unit is

put back after Renovation. The Renovation

of other two units will be carried out

subsequently.

TABLE-XVII Load shedding

The following was informed by constituent states for month of February 2018:

State/UT Load

shedding in

MU

Max load

shedding in

MW

Bilateral

Purchases

import

(+)/export (-)

in MU

Comments


AP 0 0 78/191

TS 0 0 193/265 Agricultural supply is extended

to 24 hours in all the districts

from 1st January 2018.

KAR 0.00 0 383/150

KER 4.086 500 119/363

TN 0 0 575/402

PED 0.64 45

Data to be submitted

Data to be

furnished

By

whom

To

who

m

Frequen

cy

Comments

1 OCC

approval

requests for

Generation

Units

Outages

Genera

tors

SRP

C/SR

LDC

3rd of

every

month

Planned Outages of CGS/ISG stations/MPPs approved for

the month of June /July 2018 are enclosed at Annexure-III

2

ISTS/State

Sector

Transmission

Lines and

Elements

Outage

Proposals

Transm

ission

License

es/Gen

erators

SRP

C/

SRL

DC

3rd of

every

month

Outage proposals for the months of March 2018/ April 2018

in respect of Central and State Transmission lines and

elements were approved and posted on SRPC website

(http://www.srpc.kar.nic.in/website/2017/operation/plout137o

cc.xls).

An outage coordination group had been created ([email protected]) for review of the

previous OCC approved shut downs (construction/critical).

3 Availed and

non-availed

transmission

elements

report

SRLDC Requ

estor

s/SR

PC

3rd of

every

month

4 Comments/R

easons for

non-availing

the shut

down.

Transm

ission

License

es/Gen

erators

SRP

C/SR

LDC

6th of

every

month

5 Annual

Outage plan

schedule vs

Actual

maintenance

All

Genera

tors

SRPC Monthly Information is required for the Annual Outage Plan

Deviation Report being submitted to CERC. (CGS,

State & IPPs) and Transmission Licensees

http://www.srpc.kar.nic.in/website/2017/operation/plout137occ.xls

http://www.srpc.kar.nic.in/website/2017/operation/plout137occ.xls



6 Reasons for

demand-

supply gap

and its

variations

Constit

uents

SRPC for

further

communication

to

MoP/CEA

Every

month

along

with

PSP

MoP/CEA specifically needed the reasons for load

shedding like transmission constraints, distribution

constraints, regulatory constraints viz the power

purchase not allowed beyond an agreed cost or

quantum, natural calamities, tripping of some of

major transmission lines etc. Even if load shedding is

zero a „Nil‟ report needed to be furnished on monthly

basis.

7 LS(In

MU/MW)

States SRPC/SRLDC Monthly Refer Table XVI

8 Bilateral

Purchases

states SRPC/SRLDC Monthly

9 Installation/h

ealthy

capacitors

All

Constit

uents

SRPC/SRLDC Monthly Installation & ensuring healthiness of capacitor

banks at distribution level should be ensured by all

the constituents.

10 MVAR

Interchange/

MVAR

capability

testing

All

Genera

tors/SL

DCs

SRPC/SRLDC 4th of

every

month

All the SLDCs to kindly monitor VAR

absorption/injection of generating units in their

respective control areas in real-time.

Order of Hon‟ble CERC dated 23.12.2009 merited

attention in this regard. All agencies needed to

provide required reactive compensation thus

avoiding the need for exchange of reactive power

to/from ISTS and maintain ISTS voltage within

specific range.

11 AUFR & df/dt

schemes

All

constitu

ents

SRPC/SRLDC Update

s if any

change

s

Details of the feeders implemented in AUFR & df/dt

schemes along with the status of SCADA mapping

as per the specified Formats.

12 detailed

report of

operation of

AUFR

All

constitu

ents

SRPC/SRLDC Daily

basis

In accordance with clause 9 (2) of CEA (Grid

Standards) Regulations, 2010. It was noted that only

KSEBL and PED were submitting the daily report

regarding operation of relays.

13 Upcoming

Wind/Solar

Projects

All

Constit

uents

SRPC/SRLDC Monthly Procedure for RE Frameworks had been notified and

is available at NLDC website. Progress of works of

RE Generators and evacuation system are available

in the minutes of the LVRT/RE Meeting held on

25.10.2017.

14 Outage

deviation

report

All

States/

Entities

SRPC/SRLDC Monthly Outage plan deviation Generating

Units/Transmission Elements of Southern Region

needed to be submitted by all the concerned which

is to be communicated to Hon‟ble CERC.

15 Power

Supply to

Rural Areas

All

DISCO

MS

SRPC First

week of

the

In the Meeting held at MoP on 09.04.2014 it had

been decided to collect the data invariably from

DISCOMs. It is requested that the data in this


month

for

previou

s

month.

regard in the required format may please be

arranged to be communicated to SRPC Secretariat

at the following E-mail addresses: msssrpc-

[email protected]/[email protected]

16 Status of

implementati

on of the

recommenda

tions of the

Enquiry

Committee

3rd and

17th of

every

month

17 Energy

Generation

data

Management

from

Renewable

Energy

Sources

All the

states

To CEA with a

copy to SRPC

Monthly Information furnished by states as on 31.05.2018 is

at Annexure-IV

18 Power

supply hours

in various

States/UTs

(Rural and

Urban areas)

All

States

SRPC Monthly For Replying to Parliament Questions: CEA

Requirement

19 Physical and

Cyber

Security/Crisi

s

Management

Plan/Black

Start

Procedure

CEA/SRPC Quarter

ly

Cyber Security : To be furnished to Chief Engineer,

DPD, CEA, Sewa Bhavan, New Delhi-110066.

Physical Security, other Mock Drills for CMP, Mock

Drill for Black Start Restoration : Chief Engineer,

DMLF, CEA, Sewa Bhavan, New Delhi-110066.

Information required by CEA (vide letter dated

26.11.2013) regarding Security of power installations

was to be furnished to CEA.

20 Declaration

of availability

and

healthiness

of various

protection /

defense

mechanism

All

States

SRLDC/SRPC Monthly Validated certificates needed to be communicated in

a timely manner.

21 Tripping

Details/Repo

rts

All the

concern

ed

SRLDC Within 24 hrs as per IEGC/CEA regulations. Para 29 of

Hon‟ble CERC Order dated 20.02.2014 in respect of Petition

No.146/MP/2013 was brought to attention of the OCC.




22 Compiled

Telemetry

status

Utility

wise

As directed by Hon’ble CommissionHon‟ble Commission vide order dated

19.12.2013 on Suo-moto petition No. 56/SM/2013 had directed all the utilities to

provide the required telemetry within six months of this order. It was requested

that MAPS, KGS & KKNPP may please furnish the compliance status of pending

SCADA inputs the earliest. Details in this regard were available on SRLDC web

site. For KKNPP only 2 points are pending w.r.t GT tap position. Re -tendering

was going on and it will take 5 more months to complete the works.

23 Prolonged

outage

States SRPC/SRLDC Monthly All constituents were requested to

convey the schedule of revival for the

elements under prolonged outage to

SRPC, which was to be reported to

Hon‟ble CERC on monthly basis.

(CERC Order on petition no

146/MP/2013).

24 Nodal Officer

list : Disaster

Management

All

utilities

SRLDC Update The updated status as per the

information available with SRLDC has

already been shared.

25 Presentation

on Operation

al Issues

States/

Entities

SEPC/SRLDC 5th of Every month Annexure- V

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