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भारत सरकार
उत्तर क्षते्रीय विद्यतु सविवत
18-ए, श.जीत ससह िार्ग, कटिाररया सराय,
नई दिल्ली- 110016
Government of India Northern Regional Power Committee
18-A, S. Jeet Singh Marg, Katwaria Sarai, New Delhi-110016
No. उ. क्ष.े वि. स./प्रचालन/106/01/2017/3895-3935 दिनाांक: 05.04.2017
सेवा में : प्रचालन समन्वय उपसममति के सदस्य । To: Members of OCC
विषय: प्रचालन सिन्िय उपसविवत की 133 िीं बैठक का कायगितृ ।
Subject: Minutes of 133rd OCC meeting.
प्रचालन सिन्िय उप-सविवत की 133 िीं बैठक 15.3.2017 & 17.3. 2017 को, क्रिशः नई दिल्ली एिं
लखनऊ िें, आयोवजत की र्यी थी। उक्त बैठक का कायगिृत्त उत्तर क्षेत्रीय विद्युत सविवत की िेब साइट
http://www.nrpc.gov.in पर उपलब्ध ह ै।
133rd meeting of the Operation Co-ordination sub-committee was held on
15.3.2017&17.3.2017 at New Delhi and Lucknow, respectively. The Minutes of this
meeting have been up-loaded on the NRPC web-site http://www.nrpc.gov.in.
हस्ताक्षररत /
(हिेतं कुिार पाडंये)
अधीक्षण अवभयतंा (प्रचालन)
फोन: 011-26521046 , 26868681
फैक्स: 011- 26865206
ई िेल: [email protected]
िेबसाईट: www.nrpc.gov.in
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Minutes of 133rd OCC meeting, held on 15th at New Delhi & 17th March 2017 at
Lucknow
133nd meeting of the Operation Coordination Sub Committee (OCC) of NRPC was
held on 15th March at New Delhi. & 17th March, 2017 at Lucknow . List of
participants is enclosed at Annexure-I.
1. Confirmation of Minutes:
The Minutes of the 132nd meeting of the OCC held on 16h and 17th Febuarary, 2017,
at New Delhi issued vide letter dated 8.3.2017 were confirmed by the Sub-
Committee.
2. Maintenance Programme of Generating Units and Transmission Lines:
2.1 Maintenance programme for Generating Units.
The maintenance programme for Generating Units for the month of April, 2017 was
discussed on 15.3.2017. The details of approved/deferred outages of generating
units as per deliberations in OCC has been issued vide letter no.3229-3269 dated
22.3.2017.
OCC advised all the generating utilities specially, hydro, to complete all the
maintenance related activities by April end, keeping in view ensuing peak demand
and high hydro season.
(Action : All generating utilities ; Timeline: by April,2017 end)
2.2 Outage programme for Transmission Elements.
The Outage programme of NLDC & NRLDC oversight transmission assets for the
month of March, 2017 was discussed on 16.2.2017. The details of approved/deferred
outages of transmission assets as per deliberations in OCC has been issued vide
letter no. 3229-3269 dated 22.3.2017.
OCC advised to complete all the transmission system maintenance related activities
by April end, keeping in view ensuing summer months, when it would be difficult to
allow shutdown.
(Action: All transmission utilities; Timeline: by April, 2017 end)
NLDC and NRLDC representative stated that on several occasions RVPNL had got
the shutdown approved in OCC but neither shutdown was availed nor was
information in advance given to NLDC /NRLDC for deferment of shutdown, due to
which outage request of other utilities affected. OCC advised RVPNL to apply
shutdown with proper planning, after consultation with other concerned utilities, so
that approved shutdowns are availed.
(Action: RVPNL)
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3. Planning of Grid Operation for April 2017:
3.1 Anticipated vis-à-vis Actual Power Supply Position (Provisional) for January,
2017:
SE (Operation), NRPC stated that there are much variations (i.e. > 5.0%) in the
Anticipated vis-à-vis Actual Power Supply Position (Provisional) for the month of
February 2017 in the terms of Energy requirement for Delhi, Haryana & Rajasthan
and in the terms of Peak demand for Haryana, HP, Uttrakhand & Rajasthan and in
terms of Peak Demand for Punjab & Rajasthan. The variation in anticipated and
actual energy requirement and peak demand was discussed and the reason, as
explained by Haryana, HP, Uttrakhand, Punjab & Rajasthan was due to unexpected
weather condition (i.e. high temperature/ low cold/ heavy rain/fog) and less demand
by Agricultural consumers in Uttarakhand during the month of February, 2017.
OCC expressed concern regarding sub-optimal demand estimates, as most of the
reasons mentioned by the constituents for variation were normally anticipated during
these months.
Members were advised to analyze and specify the reasons in detail, in case the
variation in demand or availability as compared to anticipated figures was more than
5%, and submit the same along with the provisional/revised Power Supply Position
Data (preferably along with form 29, provisional PSP data, by 2nd day of the next
month for the subject month) as well as in the OCC meeting, regularly.
(Action: All SLDCs; Time line: by 2nd / 15th day of every month)
3.2. Power Supply Position:
SE, NRPC stated that the provisional Power Supply Position and Notified Power Cuts
for the month of 1.2017 are available on CEA website.
All SLDCs were once again requested to furnish the provisional and final power
supply position in prescribed formats positively by 2nd and 15th day of the month,
respectively so that the same can be forwarded to CEA in time.
OCC advised all the members that the reasons regarding, demand not met/energy
not supplied, if any, must be specified in the report being submitted. It was also
advised that the reason for any substantial variation (more than 5%) in
demand/availability as compared to last month/year must be given along with the
PSP data.
(Action: All SLDCs; Time line: by 2nd / 15th day of every month)
4. Power Supply Position for NCR:
SE, NRPC stated that NCR Planning Board (NCRPB) is closely monitoring the power
supply position of National Capital Region. Monthly power supply position for NCR till
the month of November, 2016 is placed on NRPC website.
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Members were requested to submit the updated information on regular basis. (Action: SLDCs of UP, Haryana, Delhi and Rajasthan;
Time line: 15th day of every month)
5. Monitoring of schemes funded from PSDF(Agenda by NPC)
Representative of NPC stated that in the 6th meeting of NPC held on 19th December 2016, it was decided that all the RPCs in the monthly OCC meetings may follow up with entities to expedite completion of the scheme by giving due priority. The implementation of most of these schemes is based on the recommendation of the Enquiry Committee on Grid Disturbance of July 2012 headed by Chairperson, CEA. Therefore, timely implementation of these schemes would enhance the grid security and reliability.
Utilities were again requested in the meeting to submit the status of implementation
of the above schemes (physical as well as financial progress) on monthly basis, in
the prescribed format.
The details as available with NRPC Sectt. are enclosed Annexure- II.
The concerned utilities may submit the progress, physical and financial both, of
implementation of these schemes on monthly basis.
(Action: UPPTCL, PSTCL, HPSEBL, DTL, DHBVN/HVPNL, RVPNL;
Time Line: 10th Day of every month)
6. Information about variable charges of all the generating units in the Region.
As per decision taken in 103rd OCC meeting, all generating entities were required to
furnish the variable charges of their generating units on monthly basis to NRPC
secretariat. It was also decided that SLDCs would submit the variable charges of the
generating units located in their control area. The details of variable charges as
submitted by utilities from April to February 2017 are available on NRPC website.
All SLDCs and generating entities were requested to furnish the variable charges on
regular basis.
(Action: All SLDCs and Generating Entities;
Timeline: by 8th day of every month)
7. Sub-stations likely to be commissioned in next 6 months.
As decided in the 108th OCC meeting, utilities were requested to submit details of
substations at 220 KV and above level, likely to be commissioned within next 6 months
in the prescribed format.
The available status of the sub-stations to be commissioned by POWERGRID in the
states of NR and the status of down-stream assets of the concerned STU has been
uploaded on the NRPC website.
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In the meeting POWERGRID NR-1&2 were requested to update the status. They were
requested to update the information so that the downstream network in the states
could be monitored.
POWERGRID NR-3 had submitted the details of the Transmission Elements expected
to be commissioned in the next six months. The same is uploaded on NRPC website.
UPPTCL was requested to submit the status of the downstream network from the
POWERGRID sub-stations including Orai & Aligarh.
RVPN was also requested to submit the status of the downstream network from the
POWERGRID sub-stations including Ajmer & Chittorgarh situated in their state.
PTCUL updated the status regarding down-stream network from the POWERGRID
sub-station in their state which is available on NRPC website.
OCC advised all the members to expedite the down-stream network to ensure optimal
utilisation of transmission assets and to obviate system constraints.
(Action: POWERGRID NR-1&2, all transmission utilities; Time line: 05.04.2017)
8. Cleaning and Replacement of porcelain insulators:
The updated status as submitted by utilities regarding the cleaning of
insulators/replacement of porcelain insulators has been uploaded on the NRPC
website. All the members were requested to submit the progress of the work of
cleaning of insulators/ replacement of porcelain insulators in the previous month.
All the utilities including POWERGRID were again requested to specifically
submit the detailed status of Replacement of Porcelain Insulators as outages
for a number of lines had been taken for the insulator replacement work
during recent months.
(Action: All transmission utilities; Time line: 05.04.2017)
9. Recommendation of Enquiry committee for grid disturbances on 30th July, 2012
& 31st July, 2012:
Discussions on implementation of recommendations: Recommendations
pertaining to operational aspects made by the Enquiry committee for grid disturbances
on 30th July, 2012 & 31st July, 2012 are as under:
9.1 Healthiness of defense mechanism: Self- certification
(i) It was decided in the 27th meeting of NRPC held on 30th November, 2012 that all
STUs would ensure load relief as per target and settings of UFR and df/dt relays.
Mock exercise for healthiness of UFRs was to be carried out by utilities
themselves on quarterly basis and report was to be submitted to NRPC Secretariat
and NRLDC. Further, it was decided in the 31st meeting of NRPC held on
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24.7.2016 that the quarterly test report of UFR and df/dt would be uploaded on the
website of respective SLDC.
All utilities were stressed to maintain the healthiness of the UFR Relays in
view of the upcoming summer months. Also all utilities were asked to ensure
that the Report of testing ending March 2017 is submitted in the next OCC
Meeting.
(Action: All transmission utilities; Time line: 05.04.2017)
(ii) In earlier meetings, BBMB had informed that conversion of static relays into
numerical relays at 7 sub-stations (2 sub-stations in Punjab at Jamalpur & Sangrur
and 5 stations in Haryana at Panipat, Dhulkot, Kurukshetra, Jagadhari & Hissar)
by PSTCL and HVPNL was pending.The issue has been discussed in several
OCC meetings.
HVPNL, in this meeting, intimated that the procurement of new relays was in final
stage and the order will be placed by first week of April 2017. PSTCL informed that
the relay had been repaired and the same will be installed positively in the next
one week.
(Action: HVPNL, PSTCL; Time line: 05.04.2017)
(iii) On scrutiny of the UFR report ending June 2016, it was noted that the static
type UFRs were still installed on Transformers/feeders emanating from 132KV
Majra and Jwalapur Substations and 220KV Ramnagar, Roorkee and
Rishikesh Substations.
The matter is under discussions since many OCC meetings.
In this meeting, it was decided that PTCUL should expedite the work and submit the updated status and the target date for completing the work.
(Action: PTCUL; Time line: 05.04.2017)
9.2 Strengthening of Intra-State transmission system
Recommendation of the Enquiry Committee: “Intra-State transmission system
needs to be planned and strengthened in a better way to avoid problems of
frequent congestion.”
In the NRPC meeting held on 30th November, 2012, it was decided that SLDCs
should give half yearly feedback to STU regarding bottlenecks, constraints and
overloading in the State transmission network for proper transmission planning.
This exercise was to be completed by 10.10.2012 and thereafter repeated
regularly at half yearly intervals i.e. on 1st January and 1st July of every year. All
SLDCs were requested to submit copy of SLDC’s advice to their STUs, even if no
constraints were observed.
In the 132nd OCC meeting, it was noted that all utilities had submitted the
report ending December 2016. All the members were requested to submit the
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information regarding the action taken/action plan of the STU on the
feedback given by respective SLDCs. It was also deliberated that CEA may
be apprised of the SLDCs’ feedback for optimal planning of the network in
the respective States.
In this meeting, it was noted that UPPTCL, RVPNL and PSTCL had submitted
the information.
OCC was apprised that feedbacks of some SLDCs were sent to CEA for
considering in transmission planning. It was also deliberated that SLDCs
should give more details in feedbacks in line with the operational feedback
being submitted by NRLDC to planners.
OCC advised all the SLDCs to submit the next half yearly feedback with
more details in line with the feedback by NRLDC.
(Action: DTL, PTCUL, HPSEBL, HVPNL; Time Line: 05.04.2017)
9.3 Installation of adequate static and dynamic reactive power compensators.
9.3.1 Based on the studies carried out by POWERGRID for identifying compensation
required in intra-State network at 220 kV level, discussions in the 29th Meeting
of NRPC and subsequent discussion, reactors were to be installed at 9
locations, out of which 6 have been installed. The updated status of remaining
3 reactors are as under:
S.No. SUBSTATION MVAR Implementation
by
Updated Status in
133rd OCC
1 HINDAUN 125 RVPNL Expected by
31.04.2017.
2 MANESAR 125 POWERGRID Expected by
30.04.2017
3 MERTA 125 RVPNL Expected by
31.06.2017
9.3.2 Study by POWERGRID for reactive compensation at 220 kV level:
The proposal for installation of bus reactors at 12 nos. 400 kV and 17 nos. 220
kV sub-stations was discussed in the 29th meeting of NRPC held on 13th
September 2013. After deliberations, NRPC had approved installation of
reactors at 400 kV sub-stations of POWERGRID and RVPNL. As regards 220kV
bus reactors, POWERGRID had stated that the requirement would be firmed up
in consultation with the States. Subsequently, POWERGRID, vide email dated
30.09.2016 had submitted report of the study. In this report, reactors at 13
locations at 220 kV levels and at 24 locations at 400 kV level had been
proposed.
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The report was discussed in 34th TCC/38th NRPC meeting held on 24th /25th
October, 2016 wherein Delhi had requested to review the system study for its
system. POWERGRID agreed for the same. Subject to review of requirement for
Delhi, NRPC approved the report.
In this meeting, Delhi representative informed that the review would be
completed by 31.3.2017.
On the query raised by some utilities regarding quantum of reactive
compensation required, keeping in view recent installation of reactors, it
was clarified that the data for study by POWERGRID was taken from
respective utilities. Thus, utilities should be aware that, which reactor has
been taken into account in the study. It was also emphasized that the report
had already been approved by TCC and NRPC in October,2016. There
should not be any doubt regarding the reactors proposed in the study
report by POWERGRID. It was suggested that in case of any query
regarding the report, the concerned utility should directly take up with
POWERGRID.
OCC advised all the members to submit action plan for installation of
reactors, as approved by NRPC, at the earliest.
(Action: POWERGRID, UPPTCL,DTL,PSTCL, RVPNL,PTCUL;
Time Line: 05.04.2017)
10. System Protection Schemes (SPSs) in Northern Region:
10.1 SPS for Interruption of import by NR at 765 kV Agra (from WR).
Review of SPS for 765 kV Agra-Gwalior line
The revised SPS for contingency of 765 kV Agra-Gwalior was approved in 32nd
TCC/36th NRPC meeting held on 23rd /24th December, 2015. It was also agreed
in the 36th NRPC meeting that POWERGIRD would implement the revised
scheme within 06 months after the receipt of the feeder details from the states.
In the 129th OCC POWERGRID stated that the scheme would be commissioned
by 31.05.2017.
In the 132nd OCC meeting representative of POWERGID proposed that provision
of AMC of the scheme for 05 years could also be included in the scope of the work
for implementation of the revised scheme. Members agreed to the proposal of
POWERGIRD.
The representative of POWERGRID further stated that the cost of implementation
of revised SPS for 765KV Agra-Gwalior lines could be booked in any ongoing
project/ work of Northern Region. SE (O), NRPC stated that the same had already
been recommended by OCC in its 129th OCC meeting. POWERGRID
representative informed that they were waiting for NRPC approval in this regard.
After detailed deliberation it was decided that keeping in view urgency of the work,
POWERGRID should carry out tendering activities for timely implementation of the
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revised scheme. The recommendation of the OCC would be put up for
concurrence of NRPC in next meeting.
Representative of POWERGRID stated that it may not be possible to adhere to the
commissioning schedule agreed in 129th OCC meeting. Members were of the
opinion that in view of the criticality of the scheme POWERGRID should strive to
complete the commissioning of the scheme.
In this meeting, POWERGRID representative stated that tendering activities
were in process. The POWERGRID representative submitted that as the
tendering process takes time, the implementation would be done till
August/September 2017. NRLDC representative stated that all out efforts
should be made to complete the work before Paddy season, as per earlier
schedule of implementation.
( Action: POWERGRID; Time line: May,2017)
In the 132nd OCC meeting, it was informed that during the mock testing of this
SPS, at Jamsher the signal was received but the counter did not increase.
In this meeting, POWERGRID representative submitted that the needful
action has been taken at Jamsher.
Regarding mapping of feeders identified for the SPS load relief, in SCADA, it was
noted that there was no progress. OCC advised all concerned utilities to take
action in this regard at the earliest and inform the action taken/Action Plan.
(Action: All STUs; Time line :05.04.2017)
UP representative raised issue of DTPC defect at Muzaffarnagar.
POWERGRID representative stated that the issue would be looked into and
would be resolved shortly.
(Action: POWERGRID; Time line :10.04.2017)
10.2 SPS for ICTs at 765 kV Unnao sub-station:
A discussion was held on 06.05.2015 in NRPC secretariat with the officers from
UPRVUNL in the presence of officers from NRLDC, POWERGRID and NRPC sect.
UPRVUNL was briefed about the basic philosophy along with the hardware
requirement of the System Protection Scheme (SPS) for evacuation of Anpara-D
generation. It was agreed that UPRVUNL along with UP SLDC would prepare the
SPS for safe power evacuation of Anpara-D. Further the scheme would be
submitted to the OCC for approval. Thereafter, the matter was under discussion in
various OCC meetings without much progress.
As decided in the 121st OCC meeting, the scheme was to be implemented by
UPPTCL.
In 34th TCC/38th NRPC meeting held on 24th /25th October, 2016 UPPTCL informed
that LOA would be placed on 25.10.2016 and scheme would be implemented in 03
months thereafter.
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Representative of UPPTCL intimated in this meeting that the scheme will be
implemented by 15.4.2017.
(Action: UPPTCL; Time line: 15.04.2017)
10.3 SPS for Kawai-Kalisindh-Chhabra generation complex:
SPS for Kawai-Kalisindh-Chhabra generation complex recommended in 122nd OCC
meeting held on 22nd April, 2016. RVPNL, vide email dated 26.07.2016 has confirmed
that the SPS for Kawai-Kalisindh-Chhabra generation complex has been put into
operation. However, it is understood that the automatic load shedding recommended in
part (c) of the scheme has not been implemented by RRVPNL. The scheme was
discussed in 34th TCC/38th NRPC meeting held on 24th/25th October, 2016 wherein
RRVPNL stated that feeders have been identified and the scheme would be completed
by March 2017.
In the 129th OCC representative of Rajasthan intimated that, the part of the scheme
related to load shedding would be completed by March, 2017.
In 131st OCC, representative of RVPNL intimated that load shedding part of the
scheme has been installed on trial basis for 100MW load. Mock testing of the SPS
would be done for the shortlisted load and if successful the scheme would be extended
for complete 700 MW load.
OCC had advised RVPNL to implement the SPS scheme for the identified load at the
earliest and submit the report to NRLDC and NRPC Secretariat.
In this OCC meeting, representative of RVPNL submitted that the administrative
approval for implementation of the Automatic Load shedding for identified
feeders have been obtained and the NIT for the work would be floated soon.
As regard revision in SPS scheme after commissioning of Chhabra stage - II
(Unit 5), RVPNL representative stated that the same is under consideration and
information in this regard would be submitted shortly.
(Action: RVPNL; Time Line: 10.04.2017)
11. System Study for Capacitor Requirement in Northern Region for the year 2016-
17 and 2017-18.
The matter was discussed in 34th TCC and 38th RPC meetings, held on 24th & 25th
Oct, 2016. It was decided that LOA should not be cancelled and the study should be
carried out for the year 2017-18 and 2018-19 through CPRI. It was also decided that
all the states would submit the data by 31.10.2016 for carrying out study for the
period 2017-18. Subsequently, the data would be submitted for carrying out study for
2018-19.
OCC was again apprised that data for 2017-18 had been received from all the
utilities and the same was already sent to CPRI. It was also informed that CPRI
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had sought some clarification regarding UPPTCL data, due to which CPRI
could not carry out study. Matter was taken up by NRPC Sectt. with the
concerned UPPTCL officials, but the information was pending. In the meeting,
UPPTCL representative assured that the requisite information would be sent to
CPRI on the same day.
(Action: UPPTCL; Timeline: Immediate)
With regard to data for capacitor Study for 2018-19, it was noted that the same
had been received from Haryana, Rajasthan, Punjab and Himachal Pradesh.
OCC directed PTCUL, UPPTCL & DTL to submit the information for the year
2018-19, at the earliest, so that study would be carried out by CPRI.
( Action: PTCUL, UPPTCL & DTL; Timeline: Immediate)
12. Status of data trough Automatic Meter Reading (AMR)
In the 13th NRPC meeting held on 27th June 2009, scheme of Automatic Meter
Reading from Interface Meters in Northern Region was approved. He added that in
last OCC meeting, it was decided that NRLDC and POWERGRID would submit the
joint status report of AMR at the end of every month.
In the 34th TCC meeting, held on 24th Oct, 2016, NRLDC stated that out of 1235
interface meters, data from 973 meters was being received. Further, Site Acceptance
Test (SAT) was completed and data through AMR was being regularly used by
NRLDC for 764 interface meters. POWERGRID informed that the data from all the
meters will be available by January 2017. TCC and NRPC expressed concern over
tardy progress of the implementation of AMR.
The issue is being discussed regularly in OCC meetings.
In the 132nd OCC meeting, POWERGRID informed that the work would be completed
by March 2017.
POWERGRID updated that the work is targeted to be completed by April 2017.
(Action: POWERGRID; Time line:30.04.2017)
13. Planning, procurement and deployment of Emergency Restoration System.
The issue was discussed in the 33rd meeting of NRPC held on 11.11.2014 and it
was suggested that CEA should evolve guidelines regarding ERS. Later, Secretary
(Power), GoI vide letter dated 05.12.2014 addressed to Chief Secretaries of all the
states had requested to issue directions to transmission utilities / transmission
licensees to procure adequate number of Emergency Restoration Systems. The
guidelines formulated by CEA for planning, procurement and deployment of
Emergency Restoration System were also enclosed with that letter. Copy of the
aforesaid letter was enclosed as Annexure-VIII to the agenda notes of 30th TCC &
34th NRPC meetings held on 19th & 20th March, 2015.
The matter was discussed in 34th TCC and 38th RPC meetings, held on 24th & 25th
Oct, 2016.
The latest status as updated by the members in this meeting is as under:
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DTL:-Order had been placed for 02 nos. of ERS. Supply expected by May, 2017.
PSTCL:- The tendering under process.
UPPTCL:-Order for 02 nos. of ERS has been placed. Supply is expected by
25.03.2017.
RRVPNL:-Proposal pending with management.
HVPNL:-In place of ERS, spare towers worth Rs. 2 Crore would be procured. PO
issued in this regard.
PTCUL-Tender is under process.
HPSEBL –For exploring potential use of ERS in hilly state like H.P., vendors were
invited but there was no response
BBMB:-Partner states have agreed to provide the ERS as and when required by
BBMB.
OCC noted the information.
14. Targets fixed for Load Relief from operation of df/dt & UFR relays in Punjab –
Review thereof
This agenda item was brought in the 127th OCC meeting by PSTCL. In short, PSTCL
had contended that variation in their load from summer to winter was such that they
were not in a position to meet targets of automatic load shedding under UFR, df/dt
and SPS.
In the 127th OCC meeting, it was informed that the issue was deliberated in 5th NPC
meeting held on 05.04.2016 wherein it was decided that it would suffice if NR as a
whole is able to meet the desired load relief. It was decided that to work out the
same, a format would be circulated to submit the load data of the feeders where UFR
based load shedding scheme have been installed. For submission of data two typical
scenarios of July and January were to be taken. Accordingly, the format was
finalized and SLDCs were requested to furnish the information regarding automatic
load shedding under UFR scheme in the prescribed. The format was enclosed at
Annex – XII of the minutes of 127th OCC meeting
The matter was under discussion in OCC meetings. It was noted that PSTCL has
submitted the data whereas other utilities were asked to submit the requisite data.
In this meeting, it was noted that Punjab, Haryana, Rajasthan and Himachal
had submitted the information. The remaining utilities were requested to
expedite the submission of the data positively by 31.3.2017.
(Action: DTL, UPPTCL,PTCUL; Time line:31.3.2017)
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15. Transmission System Outage planning up gradation:
In the 130th OCC meeting, SE, NRPC stated that NRPC Secretariat was in the process of upgrading the Transmission System Outage Planning (TSOP) Software. The existing data was uploaded on the website htpp://www.nrpc.gov.in/meetings/OCC/Transmission lines.pdf. All utilities were requested to review the data and inform the NRPC Secretariat regarding any discrepancy or any addition in the data. It was also informed that the list of substations in NR System as received from NRLDC had been uploaded on the NRPC website at htpp://www.nrpc.gov.in/meetings/OCC/List of substations NR.pdf. All the utilities concerned were requested that the details of the elements e.g. ICT, Bus and Reactors in these substations may be provided to this office so that these elements can be included in the TSOP software. All utilities were requested to ensure that the updated data is submitted by 31.3.2017, positively. It was also deliberated that if data is not provided by the utility, then OCC would not discuss the outage.
(Action: All Transmission Utilities; Time line: 31.03.2017)
16. High Transmission Losses in Northern Region:
In the 131st OCC meeting NRLDC informed that weekly average transmission losses of
Northern Region were increased substantially, as compared to normal range of 3 to
4% . The probable reasons for such high transmission losses could be due to various
reasons including incorrect CT/PT ratios of the meters and/or non-incorporation of
some drawl points in the metering / SCADA system of NRLDC. The state-wise list of
meters at drawl points along with their C.T./ P.T. ratio were enclosed as Annex-AA of
131st OCC additional agenda. All utilities States were requested to examine their
transmission losses, CT/PT ratio and drawl points within their jurisdiction and submit a
report to NRLDC and NRPC secretariat by 31.01.2017.
PSTCL submitted the report.
OCC requested that all other utilities should submit report even if everything is
found to be in order, within 15 days positively.
17. Certification of Non-ISTS line for inclusion in PoC Charges
Central Electricity Regulatory Commission (Sharing of Inter State Transmission
Charges and Losses) (Third Amendment) Regulations, 2015 provides as under:
“Certification of non-ISTS lines carrying inter-State power, which were not
approved by the RPCs on the date of notification of the Central Electricity
Regulatory Commission (Sharing of Transmission Charges and Losses)
Regulations, 2009, shall be done on the basis of load flow studies. For this
14
purpose, STU shall put up proposal to the respective RPC Secretariat for
approval. RPC Secretariat, in consultation with RLDC, using WebNet Software
would examine the proposal. The results of the load flow studies and
participation factor indicating flow of Inter State power on these lines shall be
used to compute the percentage of usage of these lines as inter State
transmission. The software in the considered scenario will give percentage of
usage of these lines by home State and other than home State. For testing the
usage, tariff of similar ISTS line may be used. The tariff of the line will also be
allocated by software to the home State and other than home State. Based on
percentage usage of ISTS in base case, RPC will approve whether the
particular State line is being used as ISTS or not. Concerned STU will submit
asset-wise tariff. If asset wise tariff is not available, STU will file petition before
the Commission for approval of tariff of such lines. The tariff in respect of these
lines shall be computed based on Approved ARR and it shall be allocated to
lines of different voltage levels and configurations on the basis of methodology
which is being done for ISTS lines.”
Accordingly, it was decided in 31st TCC/35th NRPC meeting held on 08th /09th July,
2015 to constitute a group to recommend a methodology for the study to be
conducted by NRPC Secretariat, in consultation with RLDC. Based on the
methodology suggested by the group, the study is to be carried out every year for
certification. The study for certification of the non-ISTS lines for 2017-18 was carried
out for UP, Haryana and Rajasthan.
The transmission lines, which fulfill the criteria recommended by the group and are to
be recommended for certification as ISTS for the current Financial Year 2017-18 by
NRPC Secretariat are listed below:
S. No.
Name of Transmission Line Owner STU
1. 220KV PGCIL Panchgaon-Mau D/C line HVPNL
2. 400KV NTPC Jharli-Daultabad D/C line HVPNL
3. 400KV Sec-72 PGCIL-Daultabad D/C line HVPNL
4. 400KV CLP(Jhajjar)-Dhanonda D/C line HVPNL
5. 400kV S/C Jodhpur-Merta Line-I RVPN
6. 400kV S/C Jodhpur-Merta Line-II RVPN
7. 400kV S/C Merta - Ratangarh Line RVPN
8. 400kV S/C Merta - Heerapura Line RVPN
9. 220kV D/C Aau – Baithwasia Line RVPN
10. 220kV D/C Baithwasia – Bhawad Line RVPN
11. 220kV D/C Badisid- Aau Line RVPN
15
12. 220kV S/C Bhadla- Bap Line RVPN
The complete list of transmission lines submitted by STU can be sub-divided in
following categories:
(i) Transmission lines, which fulfill the criteria recommended by the Group and
hence are recommended to be certified as ISTS.
(ii) Transmission lines, which do not fulfill the criteria recommended by the Group
and hence may not be certified as ISTS.
(iii) The lines, which were claimed to be used for inter-state transmission by STUs
but were not modeled in the PoC transmission charge calculation and hence
exercise to see whether or not these lines carry inter-state power could not be
carried out. It may be mentioned that the responsibility to submit the requisite
details for modeling the lines in PoC transmission charge study rests with STU
concerned.
(iv) The transmission lines which are natural inter-state lines and hence need not to
be certified as ISTS by RPC.
The complete category wise list of transmission lines submitted by STUs was
enclosed at Annex- I of the Agenda of this meeting.
UP representative raised the issue of non-certification of 400 kV Sultanpur-PGCIL
(Kursi Road) line for which the average utilization by the States other than UP was
49.9%. It was clarified that as per the agreed methodology , for qualification as ISTS,
average utilization by other states should be more than 50%. Thus, this line did not
meet the criterion.
Up representative had also raised the issue of certification of STU lines being used to
deliver share of other states from ISGS embedded in UP. He cited following provision
in Central Electricity Regulatory Commission (Sharing of Inter State Transmission Charges and
Losses) (Third Amendment) Regulations, 2015:
"(vii) In case an ISGS is connected only to STU network and the shares of the beneficiaries of
the said station are being delivered through the STU network, such a line of the STU network
shall be considered as an ISTS for the purpose of these regulations.”
After detailed deliberations, OCC decided that since, as per CERC Regulations, such
lines are to be considered as ISTS, these lines do not come under the purview of
RPC for certification as ISTS lines.
Rajasthan representative had raised that some of the lines, which were proposed for
certification by them, were not included in the list given in the Agenda. On a query,
he assured that details would be provided to NRPC Sectt.
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OCC after detailed deliberation recommended for approval of NRPC the non-
ISTS lines mentioned in the table given above, for certification as ISTS lines for
the year 2017-18.
18. Review of Grid Operations for last month (Feb2017)
Representative of NRLDC made a presentation on grid operation during Feb, 2017
and highlighted the following:-
Frequency of the grid remained within the normal band 73.98% of the time during February, 2017 which is better than last year during same month (February, 2016) when frequency (within normal band) remained 70.65 % of the time. It was emphasized that since almost a year now (except for few days), % of time operation of grid in normal band is remaining only about 70% of time ,therefore NRLDC again requested all utilities to take concerted efforts to further improve the frequency regime through various measures viz. staggering of load connection/disconnection, better scheduling, keeping reserves and effective primary response by the generators etc.
Maximum load met & minimum load met for the region during February, 2017
was 43481 MW and 26009 MW respectively. The maximum and minimum
frequencies were 50.27 Hz and 49.77 Hz., respectively.
Average consumption of the Region for February, 2017 increased just by 3.84% of corresponding month in previous year.
Average Thermal generation in February, 2017 was decreased 3.89% (21 MU/Day) of corresponding month in previous year.
Average Hydro generation in February, 2017 increased by 13.93% (15MU\day) of corresponding month in previous year
Average nuclear generation in February, 2017 increased by 4.08 MU/day as compared to corresponding month in previous year.
Average renewable generation in February, 2017 increased by 3.42 MU/day as compared to corresponding month in previous year.
Net Average Inter-Regional import was increased by 30.21 MU/day during February, 2017 as compared to corresponding month in previous year.
Net Average Import from remained same in February, 2017 as compared to corresponding month in previous year.
Net Average Import from ER increased by approx. 40.62 MU/day during February, 2017 as compared to corresponding month in previous year.
Net Average Export to NER was 10 MU/day during February, 2017. Total availability during February 2017 was 893.04MU/day. Total outages during Feb, 2017 were 491 including Planned S/downs (280) and
Forced Shut /downs (Trippings-145+Emergency S/Ds-66). Different 765/400 kV Transmission lines were manually opened/ tripped
(971times) on high voltage conditions during February, 2017. The difference between data, received from SCADA and SEM in terms of %age
was shown as Haryana (0.33) Punjab (1.72), Rajasthan (4.25), Delhi (5.9), Uttrakhand (1.05), UP (1.41) & UT Chandigarh (2.46). Rajasthan was advised to look into the matter.
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Maximum deviation was observed in HP followed by Uttrakhand, UP and Haryana during February, 2017.These utilities were requested to review their load and accordingly minimize their deviation.
The load pattern of the states in which elections held, were discussed. It was noted that in some states there was substantial load reduction on the day of election. It was suggested that States may analyse such events and use the results in fine tuning the load forecast during such special days, which would help states in managing the load-generation balance.
Transmission losses since week no. 35 were quite high. All utilities were requested to review their transmission losses, drawl point and CT/PT ratio. All utilities were again advised to look into the matter and report so that the reasons can be analyzed.
Number of transmission element trippings, for POWERGRID followed by UP, and Rajasthan, were high. The OCC advised the representative of these transmission utilities to look into these and take necessary action to reduce such tripping.
The details of the Generating Stations and Transmission Elements that are in
Long Outage were also discussed (ANNEXURE-B). All the concerned utilities
were requested to update the target date by which these generating units
/transmission elements would be operational.OCC advised concerned
utilities to bring back these elements at the earliest.
Some constituents were uploading data for estimated demand, regularly, on
FTP server of NRLDC, while some constituents were not uploading data
regularly or sending in different formats. All SLDCs were requested to upload
the data regularly on the server.
As discussed during 130th OCC meeting, the usage of space technology could
be very helpful for power sector and all constituents should make use of it.
Ministry of Power (MoP) is also putting lot of emphasis on the utilization of
space technology data. Some of these decisions at MoP level are as follows:–
All Power Sector Organizations were directed to prepare specific target
oriented projects along with timelines and expected outcomes.
Directive is for all Ongoing projects as well as new emerging areas
POWERGRID is nodal agency for compilation of Road Maps and onward
Submission to MOP.
MOP to monitor the progress of achievement.
Silt Level forecast in Hydro Power Plants.
Disaster support services to Ministry of Power
Contact Person in NRSC, ISRO Hyderabad: Dr. C. S. Jha 9392048008
OCC again advised all utilities to take advantage of above and take help in inflow, silt forecasting for hydro stations as well as load forecasting based on weather conditions.
The list of elements charged in the month of February 2017 is placed at ANNEXURE-C.
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19 .Summer Preparedness – 2017
In view of coming summer month, which is peak demand period of Northern region,
OCC discussed about the load generation balance planning of all the state
constituents during upcoming summer month. NRLDC stated that with the
temperature rise, load would start picking up and respective line loading, Voltages,
frequency, drawl from the grid should be kept within operational limits to maintain
the grid security.
OCC advised all entities to start summer preparedness and suggested that all the
utilities should formulate their action plans for following:
• Change in load-generation balance
• Skewed load profile
• Voltage profile,
• Inter-regional exchanges
• Import capability of state control areas,
• Weather beating load (higher loads)
• Thunder Storm/dust storm leading to Load crash, tower collapse etc.
• Managing outage of plants due to Silt conditions
The detailed agenda on above points was discussed during 132nd OCC meeting
wherein all the entities were requested to share the action plans, preparations and
related information on the above for discussion and adaptation.
19.1 Power Supply Position
OCC discussed that as load of Northern region remain highest during
summer/monsoon, load generation balance/Power supply position planning on
monthly basis is very crucial for grid management.
OCC directed all the state to forecast the load and availability during the
summer month as under:
Load forecast (Peak & off peak)
Own generation availability
Availability from Central sector generating stations, banking &
bilateral arrangements
Short term arrangements
Shortages, if any
In the OCC meeting the last year Demand profile vis-à-vis the expected
Demand scenario worked out by NRLDC was also discussed. The
19
anticipated Power Availability and shortages for different states was also
highlighted. It was emphasised that the states of UP, Punjab, J& K and
Haryana may experience shortage of power. It was deliberated that
advance planning should be done to meet the demand these states.
All the states utility of Northern region were advised to anticipate its load for
upcoming month, availability of own generation, short term arrangements etc.
and share the respective action plan for meeting the projected load. It was
deliberated that in view of Power availability and various short term products,
load forecasting has become pre-requisite for all states to manage their
portfolio. Hence, focus should be on forecasting, network congestions, network
adequacies etc.
Maximizing the internal generation in view of foreseen congestion of inter-
regional corridor: Import from WR used to be higher and the import capability
from WR is limited. In case of summer scenario, as the load of northern region
increases, import also increases. Therefore, in order to reduce the congestion
on inter-regional corridor, keeping machines on bar within NR and maximizing
internal generation as and when required is necessary. Gas diversion to NR is
also part of increasing the internal generation within NR.
OCC advised all utilities to take necessary steps to ensure maximizing of
Internal Generation to reduce the congestion on inter-regional corridor. It
was emphasized that maintaining load-generation balance and grid
security should be given priority over financial issues.
19.2 Maintenance of reserves: Sudden outage of large hydro on silt, or tripping of
large generating station of state control area or tripping of regional entity
generator, some sort of reserves should be maintained to balance the load
generation of the region.
OCC directed all utilities to take necessary steps for following:
. Maximizing the internal generation & Maintenance of reserve
. Keep the optimum generation on bar
.Ramp up/down the generation as and when required
19.3 Assessment of respective state control area TTC/ATC: It was deliberated
that in line with CERC regulation and procedures on congestion management,
state control area should compute its import capability in co-ordination with
NRLDC. In view of peak demand scenario of NR and skewed loading, all the
states were requested to assess its state control area TTC/ATC for upcoming
summer month in advance in following manner:
i. Updating of base case
20
Projected load generation balance
New element that has been commissioned & synchronized
Network configuration (line kept opened, Bus split etc.)
ii. Assessment of TTC/ATC & RM as per CERC approved methodology
iii. Report stating TTC/ATC, Constraints
iv. Action plan for the constraints observed
NRLDC presented the TTC/ATC of respective state control areas as per the data
available at NRLDC. TTC/ATC of the state of NR and the constraints for summer
scenario is given below:
S.No. State TTC/ATC (MW)
Constraints observed
1 Punjab ~6400 N-1 contingency of Amritsar, Ludhiana, Makhu, Dhuri ICTs.
2 Haryana ~6500 N-1 contingency of Kaithal. Gurgaon ICTs, 220kV network around Hisar; Hisar(PG)-Hisar(IA) &220kV Charkhi Dadri-Lula Ahir
3 Rajasthan ~6200 N-1 contingency of Sikar, Jodhpur, Merta ICTs. N-1 contingency of 765/400kV Phagi ICTs, 400kV Bassi-Phagi ckts
4 Delhi ~4800-5050 N-1 contingency of Mundka, Bamnoli, Harshvihar ICTs and its underlying 220kV network
5 Uttar Pradesh
~7500 N-1 contingency of Agra (UP), Mainpuri (PG), Meerut (PG), Muradnagar(UP), Sultanpur(UP) and underlying network. 400/220 kV Gr. Noida: Underlying 220kV network. Low voltages: 400kV Agra (UP), Muradnagar (UP), Muradnagar New(UP), Sultanpur & several 220kV nodes.
6 Uttarakhand ~1600 N-1 contingency of Kashipur and 220kV lines of Roorkee interconnection, Baikunthpur-Panthnagar etc.
7 Himachal Pradesh
~1050 N-1 contingency of 220 kV Madanpur-Kunihar leads to the overloading of 220 kV Baddi-Kunihar. Loading on 220/132 kV Kunihar, Hamirpur and Jassore ICTs
21
8 Jammu & Kashmir
~1800 N-1 non-compliance of Wagoora ICT, underlying 220kV network of Wagoora, Kishenpur)
The TTC/ATC of each state and the constraints in the state network were
discussed in detail.
OCC advised all members to calculate the TTC/ATC for respective state and share
with NRLDC as well as NRPC Sectt.
(Action: All STUs/SLDCs; Time line 31.03.2017)
It was also advised that action plan must be prepared by all SLDCs to maintain
load-generation balance, in consultation with Discoms and STUs, considering the
available ATC and the constraints in the State network and submit to NRLDC and
NRPC Sectt.
(Action: All SLDCs; Time line: 10.04.2017)
All the State utilities were advised to limit the drawl from grid within the ATC limits.
19.4 Weather Monitoring & Load forecast
NRLDC representative stated that Weather monitoring is an important factor in
estimating the load forecast in both short term / long term period. Monitoring of
weather information therefore also help in better load portfolio management.
OCC advised that apart from IMD website links, temperature and humidity
telemetry from various substations should be monitored at SLDCs for better
information of local area weather. (ANNEXURE-E).
OCC also suggested all the users to explore the available tools e.g. weather
monitoring website/link, historical weather information and respective load,
SCADA telemetry of temperature and humidity etc. in assessing the load
behavior/load pattern of respective state control area.
It was highlighted that in the last summer season 4 events of Load crash in NR
had occurred. During these events the load crash was to the tune of 8500 MW
to 15000 MW and 15-41 EHV lines had tripped.
To deal with thunder storms/dust storms, load crash following actions were
discussed and agreed upon:
1. Backing down of generation in minimum possible time.
2. Identification of 11kV feeders that can remain connected during
thunderstorm/wind storm, in line with decision in the meeting dated 23rd June
2016, taken by JS,MoP.
3. Avoiding manual tripping of distribution feeder or LV lines.
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4. Strengthening of transmission lines towers.
5. Keeping Emergency Restoration System (ERS) ready for any eventuality.
OCC expressed concern regarding delay in identification of 11 KV feeders
that can remain connected during such eventualities, in spite of repeated
requests. OCC advised all the SLDCs to identify such feeders in
consultation with respective DISCOMS and submit the details to NRLDC
and NRPC Sectt latest by 31.03.2017.
(Action: All SLDCs & DISCOMS; Time line: 31.03. 2017).
19.5 Hydro Generation and Silt monitoring
OCC discussed optimal utilization of hydro generation during summer as it is
known, that most of the hydro station of NR are snow fed and inject its peak
generation during summer/Monsoon scenario. In view of above, OCC
recommended that any kind of maintenance in Generating
station/Units/associated transmission line etc. should be completed at the
earliest.
As already discussed in previous OCC meetings, it was again stressed that
following action should be taken by respective agencies:
Actions by Generator
• Better forecasting and silt monitoring
• Avoid sudden shut down of generation
• Reduction of Generation/Tripping of Units as per protocol
(Staggering of generation outage)
Actions by SLDC/Constituents
• Generation reserve to be maintained
Hot Reserves
Cold reserves
Contracted Generation from Other surplus entities/Traders
• Load management to be planned
• Silt forecasting with the help of ISRO
19.6 Reactive Power Management
NRLDC highlighted that during summer as the load increases, reactive power
drawl also increases which causes voltages to drop. To maintain the voltage
profile of Grid within IEGC band during summer, following actions that has
already been suggested and discussed during previous OCC meetings were
reiterated as given below:
• Switching on Capacitors
• Switching off Reactors
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• Dynamic reactive support from Generator as per its capability curve.
• Tap Optimization at 400/220kV ICTs by NRLDC and 220/132kV ICTs by
respective state control area based on scatter plots of ICTs, offline
studies, NRPC RE account etc.
• Synchronous condenser operation
• SCADA Displays of capacitors and Reactors for better visualization
19.7 Defense mechanism
Existing defense mechanism as recommended by various committees and its
importance had been discussed in many previous meetings. These defense
mechanisms cover protection from under voltage, under frequency, rate of
change of frequency, SPS for line/ICTs loading/generator complex evacuation
etc. OCC has recommended and directed all to implement and keep in healthy
condition all these mechanism as per approved settings.
NRLDC representative stated that during summer months (high demand period)
UVLS plays an important role to prevent cascade tripping on sinking of voltage.
During low voltage, UVLS relay disconnects pre-identified feeder to shed the
load to control the low voltage.
OCC decided that as the system size is increasing, role of UVLS relay is
significant in Grid stability during low voltages in the system. Therefore, UVLS
data and monitoring of status of UVLS similar to UFR or df/dt is also necessary.
NRLDC presented the updated status of UVLS, available with NRLDC:
State Nos of
locations* Voltage set (kV)
Delay in Second
Load relief (MW)
Status (06.05.16)
Uttar Pradesh
13 190 5 873.8 No
Punjab 3 (220kV Moga,
Malerkotla & Bahadurgarh)
190 10 265
Details Received (185MW
load relief)
Uttarakhand 1 (220kV
Rishikesh) 190 30-60 No
Delhi 1 (400kV Bamnoli)
360 50-100 No
Rajasthan
3 (132kV Mandan,
K.G.Bas & 220kV
Neemrana
90% of Normal voltage
30 15,22 &30
No
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OCC recommended the following based on above deliberation:
Instantaneous tripping for UVLS operation needs to be corrected with
minimum 5 second time delay.
Voltage setting for UVLS needs to be corrected in UP.
All the utilities shall submit the UVLS details of their system in the
prescribed format
OCC also advised all state control area/Users to ensure that their protection and
defense system are in working conditions and settings are as recommended. In
addition, all states/user shall update changes or modification if any carried out in
the information submitted earlier.
In addition, OCC suggested reviewing the various Islanding Scheme of states
(Delhi, Rajasthan, Haryana & Uttar Pradesh) for upcoming summer month as
per anticipated load/Generation.
States/Generators were advised to suggest changes or action plan, if any,
for modification in existing islanding schemes to NRPC.
19.8 Telemetry and Visualization
OCC discussed and advised all the members for following action:
a) Ensure telemetry & wide observability
b) SCADA displays updating/ Correctiveness
c) Important document updating and availability at control room
19.9 Protection and Transmission System pre-summer maintenance
i. Avoiding tripping of transmission elements during higher loading
ii. Reviving the elements under outages
iii. Expediting new elements to be commissioned
iv. Faster clearance of faults
OCC discussed on the above issues and directed all concerned utilities to
take requisite action.
20. SPS for HVDC Champa- Kurukshetra Line :
NRLDC representative informed that +/- 800KV HVDC Bi pole between Champa Pooling Station (Western region,Chattisgarh) - Kurukshetra (Northern region, Haryana) line (with provision to upgrade HVDC terminal to 6000MW at later date) was under trial testing since Feb-Mar’17. It is an inter-regional HVDC link between WR (Chattisgarh) and NR (Haryana). Following are the associated transmission network of WR - NR HVDC Interconnector for IPP Projects in Chattisgarh (WR) & Trans. System Strengthening in NR for IPP Projects in Chattisgarh.
25
S.No. WR NR
1 HVDC Rectifier Module of 3000MW capacity at Champa
HVDC Rectifier Module of 3000MW capacity at Kurukshetra
2 765 kV Champa pooling station 400/220KV Kurukshetra S/Stn. (GIS) 2× 500 MVA
3 765 KV D/C Champa Pooling station – Raipur Pooling Station line
400KV D/C Kurukshetra - Jallandhar line (Quad) (one ckt vis 400/220KV Nakodar(PSTCL) S/Stn.)
4 765 KV S/C Champa Pooling station - Dharamjaygarh/ near Korba Switching Station
400KV D/C Kurukshetra - Jind line (Q)
5 765 KV S/C Raigarh Pooling Station(Near Kotra)- Champa Pooling station line
400 kV D/C Kurukshetra-Malerkotla Line
6 765 KV D/C Raigarh Pooling station (Near Kotra) - Raigarh Pooling station (Near Tamnar)
400 kV D/C Malerkotla-Amritsar Line
7 LILO of Abdullapur - Sonepat 400KV D/C at Kurukshetra (Triple)
At present, HVDC Champa – Kurukshetra Bipole is for 3000 MW power transfer from Champa Pooling to Kurukshetra substation (pole-1 is under commissioning at present). Associated transmission network at 765 & 400kV in NR has already been commissioned and synchronized. In view of important HVDC link between WR-NR, N-1 or N-1-1 contingency of this bipole should also be planned. It was also informed that at present, inter connection of WR & NR is as:
S.No.
AC link S.No. HVDC link
1 765kV Gwalior-Agra-1 1 HVDC Vindhyachal B-t-B (2×250 MW)
2 765kV Gwalior-Agra-2 2 HVDC Mundra-Mahindergarh Bipole (2 × 1250MW)
3 765kV Gwalior-Phagi-1 3 Upcoming Champa-Kurukshetra Bipole (2 × 1500 MW)
4 765kV Gwalior-Phagi-2
5 400kV Sujalpur-RAPP-C
6 400kV Zerda-Kankroli
7 400kV Zerda-Bhinmal
8 220kV Morak-Badod
9 220kV Morak-Kota
10 220kV Malanpur-Auraiya
11 220kV Mehgaon-Auraiya
Under N-1 or N-1-1 contingency of this pole, it would result in overloading of already stressed 765kV Gwalior-Agra/Phagi ckts. In order to take automatic
26
action for such bulk power carrying HVDC outage, a SPS must be designed with its implementation.
NRLDC representative shared the sensitivity of HVDC Champa-Kurukshetra on the inter-regional links of NR based on system studies as given below:
- Sensitivity Champa - Kuruksherta
- on WR-NR about 60-70%
- on ER-NR about 30-40% - Sensitivity of 765 kV Agra-Gwalior among WR-NR is again about 60%
Thus tripping of Champa-Kurukshetra pole -1 with 1500 MW loading would
result in about 1000 MW increase on WR-NR as well as about 500 MW on
ER-NR corridors. This approximates to about 500-600 MW increase on 765
kV Agra-Gwalior lines. As 765 kV Agra-Gwalior links already have flow
based SPS, this SPS would cater to the single pole tripping of Champa-Kurukshetra also.
However, with the outage of Champa-Kurukshetra, situation would revert
back to present conditions and therefore TTC/ATC of NR import would need
to be revised immediately. All the utilities would have to take immediate
action to reduce drawal (also by increasing internal generation) under such situation.
He added that as commissioning of SPS also takes lot of time, it is better to
strengthen SPS for 765 kV Agra-Gwalior lines.
After detailed deliberation, it was decided that revised SPS of 765 kV Agra-Gwalior D/C line should be expedited and the work of design and implementation of SPS for 3000 MW Champa –Kurukshetra Bipole should be initiated.
( Action: POWERGRID NRLDC; Time line: Immediate)
21. Augmentation of Transformer capacity at Dehar BBMB:
NRLDC representative stated that in line with approval of Standing Committee
on power system planning, augmentation of Transformer capacity was done at
Dehar (BBMB) by replacing old ICT of 250 MVA(ownership with BBMB) with
315 MVA ICT(ownership with POWERGRID) by POWERGRID. Regarding this
all pre charging documents were submitted by POWERGRID including SCADA
and Protection undertakings as well as consent was conveyed by BBMB in
compliance of CERC (IEGC) Regulations, 2010 and CEA (standard of
Connectivity to the Grid) Regulations, 2007.
27
He added that after the completion of trial run of new ICT, NRLDC did not
receive Disturbance Recorder and Event recorder data. POWERGRID had
conveyed that as per old existing system there is no SCADA and event
recorder. Non-availability of Event Logger and Disturbance Recorder is a
violation of CERC (Indian Electricity Grid Code) Regulations, 2010 and CEA
(Standards of Connectivity to the Grid) Regulation, 2007. The relevant
provisions of IEGC and CEA are quoted below:
IEGC Grid code clause 4.6.3:
“Recording instruments such as Data Acquisition System/Disturbance
Recorder/Event Logging Facilities/Fault Locator (including
time synchronization equipment) shall be provided and shall always be
kept in working condition in the ISTS for recording of dynamic
performance of the system. All Users, STUs and CTU shall provide all
the requisite recording instruments and shall always keep them in
working condition.”
As per Standards of Connectivity to the grid: Part 1 General Clause
(7) Disturbance Recording and Event logging facilities:
“Every generating station and sub-station connected to grid at 220kV or
above shall be provided with Disturbance Recording and Event logging
facilities. All such equipment shall be provided with time synchronization
facilities for global common time reference. “
BBMB informed that DR was already there. He assured EL would be
installed within 3 months. BBMB detailed upon that it is in the process of
integrating 61850 compliant Numerical Relays with the Siemens RTUs for
recording the event in SCADA.
(Action: BBMB; Timeline 15th June,2017)
22. Multiple element tripping events in Northern region since last OCC
meeting:
NRLDC representative informed that a total of 15 grid events occurred since last
OCC meeting. Out of these 15 events, 7 no. of events were of GD-1 category.
The preliminary report of all the events had been issued from NRLDC. A list of
all these events along with the status of details received was attached at
Annexure-II of the agenda of this meeting.
OCC discussed and requested concerned utilities that they should take
expeditious actions to avoid such tripping in future. Further, all the
concerned utilities were requested to provide the DR/EL & Detailed Report
of the events in line with the regulations.
28
(Action: BBMB, POWERGRID, NHPC, PSTCL, RVPNL, UPPTCL, NTPC,
HVPNL, APCPL, JSW (Karcham); Time line: Immediate)
23. Details of tripping of Inter-Regional lines from Northern Region for
February’17:
NRLDC representative informed that two inter-regional lines tripping occurred in
the month February’17. The details were attached at Annexure-III of the Agenda
of this meeting. He added that as per regulations, all the utilities should furnish
the DR/EL, flag details & preliminary report to RLDC/RPC within 24hrs of the
event. They should also furnish the detailed investigation report within 7 days of
the event, if fault clearance time is higher than mandated by CEA (Grid
Standard) Regulations.
It was noted that the not all information regarding the tripping was received from
the utilities.
OCC requested all the concerned utilities for taking corrective action to avoid such tripping as well as timely submission of the information. (Action: RVPNL, POWERGRID Time line: Immediate)
24. Frequency response characteristic:
NRLDC representative informed that four FRC based event had occurred since
last OCC meeting. The FRC had been computed by NRLDC as well as request
was sent to state control areas along with other regional entities to compute the
same at their end. Descriptions of the events are as given below:
S.No. Event Date Time (in
hrs) Event Description
Starting Frequency
(in Hz)
End Frequen
cy (in Hz)
Δf
1 21-Feb-17 15:59
Due to tripping of Kalisindh Unit-I & II the generation loss of 830 MW took place.
50.01 49.90 -0.10
2 23-Feb-17 16:15 Kudankulam Unit-II generating 1000 MW went under house load.
49.99 49.92 -0.07
3 02-Mar-17 01:57 Krishnapatnam Unit - 1 & 2 tripped.
50.14 49.99 -0.15
4 05-Mar-17 15:14 Load rejection Test of unit II(1000 MW) Kudankulam
50.15 50.04 -0.11
29
NRLDC representative further mentioned that the Hon’ble CERC approved
procedure had already been shared with all concerned during previous OCC
meetings. FRC observed for each state control area for the events is tabulated
below:
State Name
For past 27 FRC events
FRC
Average FRC
Median FRC
21-Feb-17
23-Feb-17
02-Mar-17
05-Mar-17
PUNJAB 16% 8% 23% 0% 5% 36%
HARYANA 29% 19% 5% 0% 23% 20%
RAJASTAN 18% 9% 50% 6% 0% 44%
DELHI 27% 19% * 33% 19% 31%
UTTAR PRADESH
21% 10% * * 4% 37%
UTTARAKHAND 18% 22% * * 23% 0%
CHANDIGARH 33% 24% 37% 45% * *
HIMACHAL PRADESH
18% 10% * 100% * 10%
JAMMU & KASHMIR
8% 5% 33% 34% * *
NR 19% 16% 29% 8% 3% 19%
Major Thermal Generation in
NR 8% 15% 27% 18% 8% 16%
Major Hydro Generation in
NR 5% 4% 2% 23% 1% 17%
* Unreliable FRC due to SCADA data error or schedule change
He informed that the Average FRC in line with the decisions taken during
various OCC meetings, the time and date of the FRC events were e-mailed to
respective utilities.
Concerned utilities were requested to submit the FRC of their control areas.
OCC expressed concern over such continuous poor frequency response
and stressed upon all utilities to take corrective measures.
24. Tripping of all line at Kurukshetra HVDC substation on high voltage
protection:
NRLDC representative informed that as reported, at 15:19hrs on 17.02.2017,
seven number of Filter banks inadvertently got connected due to mal-operation
of control system (presently testing phase) leading to sudden injection of 955
30
MVAR.Voltage shot up to above 440kV resulting in tripping of all 400 kV lines at
Kurukshetra on over voltage protection.
He added that the over voltage settings for Stage-1 is having a time delay of 4
sec, while, the usual practice is to keep the grading in parallel or same station
lines in the range of 5-6 sec and 110-112% of rated voltage. He suggested that
logic should be revised so that at least 4-5 lines, preferably of lesser length,
should remain connected.
POWERGRID representative informed that the problem occurred due to some
logic issue, which would be resolved before commissioning. He informed that
Grading for some of the lines had also been done. He assured that action would
be taken to avoid recurrence of the such events.
(Action: POWERGRID; Timeline: 05.04.2017)
25. Unavailability of PLCC at GSS Sakatpura for 220Kv RAPP B-Kota Circuit
In the 132nd OCC meeting, NPCIL representative informed that RAPP B-Kota (circuit-
II) PLCC was not available since last two years. End zone faults occurring in line were
getting cleared in zone-2 time delay, instead of carrier aided trip.
This also results in simultaneous tripping of RAPP B-C tie line at RAPP-C end on
backup earth fault protection, in addition to RAPP B-Kota circuit-II tripping in zone-2
time of 350msec. With outage of two evacuation lines with both generators in service,
remaining three lines RAPP B-Chittor-I, RAPP B-Chittor-II & RAPP B-Debari becomes
loaded. There is risk of cascade tripping of these lines and risk of both units outage
due to offsite power failure. He added that RRVPNL informed that PLCC cards were
faulty and needs repair / replacement and emphasized that PLCC issue should be
resolved on highest priority to make PLCC available at GSS Sakatpura for 220kv
RAPP-B-Kota ckt.
In 132nd OCC meeting, the matter was discussed in detail. The issue of ownership
came up during the deliberations. RRVPNL was advised to submit information within
15 days.
In this meeting, RVPNL representative intimated that the communication wing will
restore the PLCC at the earliest.
(Action: RVPNL Time line: 15.4.2017)
31
26. LVRT issues of wind/solar generation
It was deliberated that as per the Technical Standards for Connectivity to the Grid,
(Amendment), regulations, 2012, B.2 (3) states the following:
“Wind generating stations connected at voltage level of 66kV and above shall
remain connected to the grid when voltage at the interconnection point on any
or all phases dips up to the levels depicted by the thick lines in the following
curve:
Provided that during the voltage dip, the individual wind generating units in the
generating station shall generate active power in proportion to the retained
voltage;
Provided further that during the voltage dip, the generating station shall
maximize supply of reactive current till the time voltage starts recovering or for
300ms, which ever time is lower.”
Further as per the regulation, the station connected to the grid 06 months after
publication of these regulation (i.e.15.04.2014) shall have the LVRT capability.
Regarding wind turbines commissioned before 15.042014, CERC in order
dated 05.01.2016 in Petition No. 420/MP/2014 LVRT had directed that LVRT
should be implemented for all wind turbines (except Stall Types) commissioned
before 15.04.2014 having installed capacity equal to or more than 500 KW.
32
In the 36th NRPC meeting, the LVRT issue of wind/solar generation was raised
wherein representative of RVPNL stated that LVRT is being enforced for wind
stations. He agreed to submit the status of LVRT for wind stations
OCC expressed concern over long pending issue. RVPNL representative
intimated that the issue has been taken up with the RE generators. OCC
advised that the information should be submitted at the earliest.
( Action: RVPNL, Time line 15.04.2017)
Additional Agenda
AA1. Change in terminology used in power supply position reports.
SE, NRPC informed about communication received from CEA, wherein was
mentioned stated that Grid Management Division, CEA publishes the monthly Power
Supply Position reports based on data submitted by state utilities through RPCs.
These reports show state-wise details of demand of demand, supply and shortage of
electricity in terms of energy and peak MW. Keeping in view ample un-utilized
generation capacity in the country, demand-supply gap of electricity in various states
cannot be attributed to non-availability of power in the present scenario. Accordingly, it
is not considered appropriate to term the demand-supply gap and energy/peak
shortage but energy not supplied/demand not met. Thus, the terms ‘peak deficit’ and
‘energy deficit’ appearing in various reports including power supply position reports are
not reflective of the actual situation in the country today.
CEA had conveyed decision to change the terminology used in Power Supply
Position report w.e.f. January,2017(Revised) as under:-
Energy Power Supply Position Report
Energy Requirement (MU)
Energy Supplied (MU)
Energy not supplied
(MU) (%)
Peak Power Supply Position Report
Peak Demand (MW)
Peak Met (MW)
Demand not met
(MW) (%)
OCC advised all members to take note of the decision and incorporate the
changes in all the communications regarding power supply position including
the monthly power supply position data in format 28 and 29 being furnished by
SLDCs to NRPC Secretariat.
( Action: All SLDCs; Time line: Immediate)
33
T1: Table agenda by NAPS
NAPS representative informed that NAPS Generating station combined with
Harduaganj TPS is connected to NR Grid through 220 kV transmission lines
emanating from NAPS & Harduaganj TPS Switchyards. Some of these lines have
been LILOed by UPPTCL for fulfilling their requirements, namely;
i) NAPS is connected to Moradabad by NAPS-Moradabad line has been made
LILO at Sambhal.
ii) NAPS is connected to Meerut by NAPS-Simbholi line.
iii) NAPS is connected to Harduaganj TPS by NAPS-Khurja lines (D/C) out of two
lines one has been made LILO at Dibai recently and NAPS-Harduaganj line
LILOed at Atrauli.
iv) Harduaganj TPS is further connected to Mainpuri by Hrduaganj- Maipuri lines
(D/C), both lines have been made LILO at Etah and Sikandrarao respectively.
He added that the above 220kV transmission lines between these generating stations
are repeatedly opened at one or more LILO points simultaneously probably for load
control and kept open for longer durations and also not being reported to NAPS
authorities. This reduces the system stability especially in case of tripping of any other
line connected at NAPS.
The details are given below;
i) NAPS are connected to Moradabad by NAPS-Moradabad line kept open either
at Sambhal or Moradabad.
ii) NAPS are connected to Harduaganj by NAPS-Harduaganj line is kept open at
Atrauli.
iii) NAPS is connected to Harduaganj TPS via Khurja lines(D/C) is also kept open at
Dibai.
iv) Harduaganj TPS is further connected to Mainpuri by Harduaganj-Maipuri line(via
Etah) is kept open at Etah.
v) Harduaganj TPS is further connected to Mainpuri by Harduaganj-Maipuri line (via
Sikandrarao) is kept open at Sikandrarao.
He stated that the practices for opening of interconnecting lines at one or more LILO
points simultaneously is a serious issue resulting in weakening connectivity between
various parts of grid system and generating station. It had been experienced in past
that the opening of interconnecting lines resulted in transient and finally loss of
generation at NAPS as well as Harduaganj TPS.
UPPTCL representative assured that the issue would be resolved in coordination
with NAPS.
( Action: UPPTCL; Time line: 15.04.2017)
Annexure 1
Name Designation Organization Fax No. Phone/Mobile e-mail ID
Pecomml.inNRPC.rediffmail.com
S.K.Mishra SM(E) NHPC 9910103478 [email protected]
Vijay Kumar E(E) NHPC 9818696821 [email protected]
R.D.Yadav STE(E&I) NPCIL 9413354527 [email protected]
Prabhat Sharma SO/F NPCIL 9412768008 [email protected]
Sameer Rai SO/G-Operation NPCIL 9412768052 [email protected]
Kamaldeep Dy.Mgr NRLDC 9971700422 [email protected]
D.K.Jain Addl.GM NRLDC 011-26852747 9910344127 [email protected]
Rajeev Porwal DGM NRLDC 011-26852747 9871581133 [email protected]
P.K.Agarwal GM NRLDC 9910064320 [email protected]
V.Jolly Sr.Mgr NTPC 9650996340 [email protected]
Rakesh Chopra GM(comml) NTPC 8004911131 [email protected]
Mohd.Zia AGM(OS),NRHQ NTPC 9415005883 [email protected]
P.K.Saini Sr.Mgr(OS) NTPC 9650991759 [email protected]
D.Chakraborty Addl.GM PGCIL 9873549050 [email protected]
D.Kushwaha AGM PGCIL 9425409591 [email protected]
Rajiv Mohan GM(AM)NR-III PGCIL 9431820304 [email protected]
S.C.Sharma Chief Manager PGCIL 9873918526 [email protected]
Praveen Kumar DGM PGCIL 9419213490 [email protected]
Rajeev Agarwal Manager SJVNL 9418045426 [email protected]
Vishalakshi Malan Sr.Engineer THDC 8755297715 [email protected]
Naveen Kumar AM(T),SLDC DTL 9999533883 [email protected]
Sunilesh Mohari DGM(p/m) DTL 9999533655 [email protected]
B.L.Gujar Manager(T)Prot. DTL 9999533985 [email protected]
S.K.Sinha DGM(T),SLDC DTL 9999533673 [email protected]
N.K.Makkar EE HVPNL 9466219042 [email protected]
Er.K.S.Sambyal ASE(PC) HPPTCL 9418030537 [email protected]
Er.Suresh Sharma AE HPPTCL 9418040918 [email protected]
Saleem Mohammad ASE/SLDC PSTCL 96461-18001 [email protected]
V.K.Gupta AEN(SOLD) RVPNL 9413383201 [email protected]
Atul Sharma EE(SOLD) RVPNL 9413382632 [email protected]
C.L.Koli SE(PP) RVPNL 9413385340 [email protected]
M.M.Ranwa CE(RUVNL) RVPNL 9413359050 [email protected]
Sanjay Kumar
Chaurasiya
EE UPPTCL 8005461633 director)[email protected]
A.J.Siddiqui EE UPPTCL 9415609363 [email protected]
Brijesh Singh EE,VVNL UPPTCL 9415901993 [email protected]
Kavindra Singh Tech.Advisor UPPTCL 9412749803 [email protected]
P.N.Upadhyaya CE(SLDC) UPPTCL 8004941065 [email protected]
B.K.Jha SE(O) UPPTCL 9415311206 [email protected]
Chnadra Mohan D(O) UPPTCL 9415311221
Dheeraj Jain DGM(comml) APCPL 9650993884 [email protected]
Manoj Taunk GM AD Hydro 9099005517 [email protected]
P.S.Mhaske MS NRPC
Hemant Pandey SE(S) NRPC
B.S.Meena EE(S) NRPC
K.N.Rao Chf.Mgr NRPC
Sonia Chauhan ASE NRPC
Akshay Dubey AEE NRPC
Satyendra Prakash AGM(T)-COS IPGCL-PPCL 9717694813 [email protected]
List of Participants in the 133rd OCC meeting held on 17.03.2017
Kuldeep.S.Manderna Addl.SE/PC BBMB 0172-2653297 9417200352
( Amount in Rs. Crores) As on 27.02.2017
State / UT No. of Schemes Scope of Work (Scheme) Approved Cost Grant Sanctioned Date of Sanction Funds Released % of fund Disbursed against grant Sanctioned Status
Annexure-2
Sr.
No.
State / UT No. of
Schem
es
Scope of Work (Scheme) Approved
Cost
Grant
Sanctioned
Date of Sanction Funds
Released
Status/Remark
Renovation and Upgradation
of protection system in the
substations of Jammu.
140.04 140.04 28/10/2015 0.00 0.00 %
Renovation and Upgradation
of protection system of
substations in Kashmir area.
146.12 146.12 17/03/2016 0.00 0.00 %
Installation of Bus bar
protection scheme in the state
of Punjab
18.21 16.39 17/03/2016 0.00 0.00 %As per information received
from PSTCL vide mail dated
26.03.2017 Progress is NIL
Provision of second DC
Source at 220 kV & 132 kV
Grid Sub Stations of PSTCL
15.30 13.78 01-02-2017 0.00 0.00 %
3 Himachal
Pradesh
1 Renovation and Upgradation
of Protection System of
substations of HPSEBL.
55.44 55.44 01-05-2016 0.00 0.00 %
4 Uttrakhand 1 Renovation and Upgradation
of Protection System of
substations in PTCUL.
125.05 125.05 17/03/2016 12.50 10.00 %
5 Haryana 1 Renovation and
Modernization of distribution
system of DHBVN, Haryana.
364.27 273.2 09-05-2016 0.00 0.00 %
Renovation and Upgradation
of protection system of 220kV
and 400kV substations in the
state of Rajasthan in order to
rectify Protection related
deficiencies
159.53 143.58 31/12/2014 10.79 7.51 %
Installation of 1 no each new
400kV, 125MVAR Bus Type
Shunt Reactor at 400kV
Hindaun and 400kV GSS
Merta City, alongwith shifting
of 400kV, 50MVAR Bus
Type shunt reactor from
400kV Merta City to 400kV
Bhilwara and associated bays
at these stations.
23.87 21.48 31/12/2014 6.45 30.03 %
7 Delhi 1 Rectification and Upgradation
of protection system and
replacement of outlived
equipments in DTL
substations
125.98 113.38 17/03/2016 11.34 10.00 %
8 Northern
Regional
Power
Committee
(NRPC)
1 Study program on the
integration of renewable
energy resources of NRPC
6.45 6.45 28/10/2015 4.49 69.61 % Completed
Installation of Capacitors
banks in the state of Uttar
Pradesh in order to improve
Voltages
39.29 35.36 05-11-2015 7.76 21.95 %
Supply completed
Renovation and Upgradation
of Protection and control
Systems, UFR Mapping and
Islanding scheme in the state
of Uttar Pradesh to rectify
Protection related deficiencies
202.94 182.65 05-11-2015 38.03 20.82 %
The details enclosed with
Reconductoring of 11 Nos of
132kV Lines of the state
network of UPPTCL for
Relieving Congestion
80.00 60.00 17/03/2016 0.00 0.00 %
14 1502.49 1332.92 91.36 6.85 %
NORTHERN REGION SCHEMES FUNDED FROM PSDF
% of fund Disbursed
against grant
Sanctioned
21 Jammu &
Kashmir
TOATAL
( Amount in Rs. Crores) As on 27.03.2017
NOTE: One scheme of Uttar Pradesh for relieving congestion (Rs. 60 crores sanctioned grant during 2015-16) is not eligible as the LoA has already been placed
before the approval of the scheme.
2 2
Uttar
Pradesh
3
Punjab
Rajasthan 26
9
LIST OF NEW TRANSMISSION ELEMENTS CHARGED IN THE MONTH OF FEB - 2017
Transmission Lines(220kV 109.43 ckt km & 400kV 236.79 ckt km )
Si. No.
Transmission Elements Owner Type Charging
Date Charging
Time Details of Transmission
Elements
1 220 kV Dehradun- Jhajra-I PTCUL Line 01.02.2017 19:08 6.11 km Twin Zebra
2 220 kV Dehradun- Jhajra-II PTCUL Line 01.02.2017 22:27 6.11 km Twin Zebra
3 400 kV Allahabad(PG)- Meja(NTPC)-II PGCIL Line 08.02.2017 20:30 28.19 km ACSR Twin
Moose
4 400 kV Amritsar-Jalandhar-S/C { LILO of 400 kV Amritsar-Hamirpur at Jalandhar}
PGCIL Line 11.02.2017 19:50 71.436 km ACSR Twin
Moose
5 220 kV Orai(PG)-400kV Orai(UP){LILO of 220 kV Kanpur(PG)-220kV Orai at 400 kV
Orai} UPPTCL Line 11.02.2017 17:25 12.80 km Single Zebra
6 400 kV Hamirpur-Jalandhar-S/C { LILO of 400 kV Amritsar-Hamirpur at Jalandhar}
PGCIL Line 12.02.2017 10:03 135.16 km ACSR Twin
Moose
7 CB No X14 & 400 kV Interconnector
between Unit 5,6 and Unit 7,8 SSCTPP RVUNL ICT 14.02.2017 21:09 2.0 km
ACSR Quad Moose
8 Kanpur(PG)-765kV Orai(UP) {LILO of 220
kV Kanpur(PG)-220kV Orai at 400 kV Orai}
UPPTCL Line 16.02.2017 15:37 84.41 km Single Zebra
LIST OF NEW TRANSMISSION ELEMENTS CHARGED IN THE MONTH OF FEB 2017
ICTs (3045 MVA) / Bus Reactor (365 MVAR) / Line Reactors
Si. No.
Transmission Elements Owner Type Charging
Date Charging Time
9 315 MVA ICT(PG) at Dehar replacing 250 MVA ICT(Augmentation of capacity)
PGCIL ICT 01.02.2017 18:15 (on load)
10 125 MVAR B/Reactor at RAPP C NPCIL B/Reactor 02.02.2017 16:34
11 100 MVA ICT-II at Anpara(Replacing damage ICT) UPPTCL ICT 03.02.2017 17:43
12 CB No 425R of 125 MVAR L/Reactor at Gorakhpur of Barh-Gorakhpur-I
PGCIL PGCIL 03.02.2017 15:47
13 CB No 427R of 125 MVAR L/Reactor at Gorakhpur of Barh-Gorakhpur-II
RRVPNL PGCIl 07.02.2017 13:48
14 315 MVA,400/220kV ICT-II at Sohawal PGCIL ICT 10.02.2017 1205 (on no load)
15 315 MVA,400/220kV ICT at Orai UPPTCL ICT 11.02.2017 17:25
16 3x275,400/21 GT at Suratgarh Super Critical Thermal Power Plant
RRVPNL GT 14.02.2017 21:09
17 500 MVA,400/220kV ICT-III at G.Noida UPPTCL ICT 19.02.2017 17:10(on load)
18 240 MVAR B/Reactor at Fatehbad (UP) UPPTCL B/Reactor 27.02.2017 19:43
19 1500 MVA ICT-II at Fatehabad (UP) UPPTCL ICT 27.02.2017 14:59 (on load)
LIST OF NEW TRANSMISSION ELEMENTS CHARGED IN THE MONTH OF FEB 2017
Other Elements / Lines for antitheft purpose / old line on new bays
SI. No. Transmission Elements Owner Type Charging
Date Charging Time
(Hrs)
20 220 kV Bay 203, 208 &209 at Sohawal (PG) PGCIL Bays 10.02.2017 12:05,12:27 &13:45 hrs
21 400 kV Bays at Dehradun of
Abdullapur(407,408,409 & 410) PGCIL Bays 18.02.2017 14:02/14:07/13:49/14:50
Long Outages Generating Units : Feb-
2017
Si. No Station Location Owner Unit No Capacity Reason(s) Outage
Date Time
1 RAPS-A RAJASTHAN NPC 1 100 Subject to regulatory
clearance 09-10-2004 22:58
2 Dehar HPS HP BBMB 6 165 Renovation work. 21-03-2014 18:00
3 Bhakra-L HPS HP BBMB 5 108 Annual maintenance 12-04-2016 09:50
4 Badarpur TPS DELHI NTPC 4 210 Manually closed due to pollution in Delhi NCR
area. 07-11-2016 17:14
5 Bhakra-R HPS HP BBMB 1 157 Annual maintenance 09-11-2016 08:00
6 Dehar HPS HP BBMB 1 165 Penstock repairement 20-12-2016 11:10
7 Dehar HPS HP BBMB 2 165 Penstock repairement 20-12-2016 11:10
8 Chamera-III HPS HP NHPC 3 77 HRD inspection work. 01-02-2017 00:00
9 Chamera-III HPS HP NHPC 2 77 HRD inspection work. 01-02-2017 00:00
10 Chamera-III HPS HP NHPC 1 77 HRD inspection work. 01-02-2017 00:00
11 Obra TPS UP UPRVUNL 7 100 R & M work 01-07-2010 13:44
12 Obra TPS UP UPRVUNL 12 200 Annual maintenance 01-10-2016 14:01
Long Outages Generating Units : Feb-
2017
Si. No Station Location Owner Unit No Capacity Reason(s)
Outage
Date Time
13 Rajwest (IPP) LTPS RAJASTHAN RRVUNL 2 135 Bad material leakage 20-12-2016 01:55
14 RGTPP (Khedar) HARYANA HPGCL 2 600 Annual maintenance 04-02-2017 21:33
15 Bhakra-R HPS HP BBMB 4 157 Ash handling problem Capital maintenance of
pen stock head gate 22-02-2017 08:30
16 Giral (IPP) LTPS RAJASTHAN RRVUNL 1 125 Bad materials leakage. 11-07-2014 08:20
17 Giral (IPP) LTPS RAJASTHAN RRVUNL 2 125 Boiler tube leakage 27-01-2016 15:27
18 Guru Gobind Singh
TPS (Ropar) PUNJAB PSEB 4 210 Boiler tube leakage 02-10-2016 22:00
19 Panki TPS UP UPRVUNL 3 110 Boiler tube leakage 21-12-2016 11:50
20 Paricha TPS UP UPRVUNL 2 110 Boiler tube leakage 18-01-2017 13:37
21 Rajwest (IPP) LTPS RAJASTHAN RRVUNL 3 135 Boiler tube leakage
DUE TO BED MATERIAL LEAKAGE.
25-02-2017 02:02
Long Outages Transmission
Elements : Feb- 2017
Si. No Element Name Type
Voltage Level
Owner Outage
Reason / Remarks Date Time
1 New Wanpoh 125 MVAR Bus
Reactor 1
Bus
Reactor 400 kV PGCIL 10-10-2016 10:09 Take out due to low voltage.
2 FSC of Pampore-2 at Kishenpur FSC 220 kV PGCIL 30-10-2012 12:00 Line length has reduced after
LILO work completion
3 FSC of Pampore-1 at Kishenpur FSC 220 kV PGCIL 30-10-2012 12:00 Line length has reduced after
LILO work completion
4 Bamnauli(DTL)-Jatikala(PG) 1 Line 400 kV DTL 22-05-2016 20:29
Tower damage (First dead end
tower from Bamnauli S/S) / Ckt-II
charge through ERS tower
5 Kalisindh 315 MVA ICT ICT 400/220 kV RRVPNL 04-06-2016 15:50 Buchholz relay operated.
6 Bawana 315 MVA ICT 1 ICT 400/220 kV DTL 11-12-2016 08:37 Fire in ICT-1
7 Anpara 100 MVA ICT 2 ICT 400/132 kV UPPTCL 15-02-2017 20:25 DGA test values are poor
8 Sarnath 50 MVAR B/R Bus
Reactor 400 kV UPPTCL 16-02-2009 06:14 Failure of Reactor
9 Wagoora 50 MVAR B/R Bus
Reactor 400 kV PGCIL 22-04-2015 18:56 Take out due to low voltage.
10 FSC ( 50% ) of Koteshwar Pool -2
at Meerut (PG) FSC 400 kV PGCIL 16-07-2015 13:01 Fire in FSC-2 at Meerut.
11 FACT at BLB in Knp-BLB Line FACTS 400 kV PGCIL 02-07-2016 10:20 Y-Phase current imbalance
Long Outages Transmission
Elements : Feb- 2017
Si. No Element Name Type
Voltage Level
Owner
Outage
Reason / Remarks Date Time
12 400/220 kV ,315 MVA ICT- II at
Jodhpur ICT 400 kV RRVPNL 24-12-2016 14:11 R-ph Bushing burst.
13 Kishenpur - Meerbazar (JK)
Line
220 kV J & K 08-02-2017 15:23
Line tripped on R-Y-N fault.
Tower no. 175 collapsed.{11Km
from Ramban (towards
Kishenpur direction) }
14 TCSC1 of Muzaffarpur-1 at
Gorakhpur TCSC 400 kV PGCIL 17-09-2016 11:23 Signal problem
15 FSC of 400 kV Aligarh - Muradnagar
at Muradnagar end FSC 400 kV UPPTCL 09-10-2015 12:28
LILO of 400 kV Panki –
Muradnagar at Aligarh.
16 FSC of 400 kV Balia- Sohawal –I at
Sohawal FSC 400 kV UPPTCL 14-10-2016 10:52 Low current.
17 FSC of 400 kV Fatehpur-Mainpuri I
at Mainpuri end ICT 400/220 kV DTL 12-08-2016 15:49
Due to self-triggering of spark-
gap
18 FSC of 400 kV Kanpur-Ballabgarh- I FSC 400 kV
PGCIL
20-07-2016 20:55 Due to Signal column fail
Weather Monitoring IMD: Press release on 28th Feb 2017
Action: States should assess the load behavior with rise in temperature.