1 rd Agenda for 123 OCC Meeting of SRPC to be held on 9 ...

1 Agenda for 123rd OCC Meeting of SRPC to be held on 9th September 2016.

Southern Regional Power Committee Bengaluru

Agenda notes for 123rd

Meeting of the Operation Coordination Committee of SRPC to be held at Kodaikanal on 9

th September 2016

1. Confirmation of the Minutes of the 122

nd Meeting of OCC held at Hyderabad on 08

th August 2016.

2. Monthly/Annual Outage Plan 2.1 ISGS/CGS: Generating Units

a) Shut Down Proposals for September/October 2016

b) Shut Down carried out during August 2016 along with reason for deviation, if any.

c) Rescheduling of TPCIL (2 x 660) MW Unit–I Annual Shut Down Annual Shutdown for TPCIL Unit I was planned in the month of July 2016. In the 121

st OCC

Meeting it was noted that shutdown may be approved from 22.08.2016 to 08.09.2016 subject to concurrence from AP and Telangana. TPCIL vide letter dated 21.08.2016(Annexure-2A) informed that TPCIL had sought approval from AP and TS SLDCs. TSSLDC had requested TPCIL to defer the shut down in view of increased power demand in the coming months on account of irrigation load for kharif crop. It is proposed to avail the Annual Shut Down of TPCIL Unit –I in the month of December 2016. All the works requiring TPCIL power transmission line outage will also be completed during the same time.

2.2 ISTS/State Sector Transmission Elements

a) As per the NLDC outage procedure constituents to furnish the outage proposals for subsequent month by 3

rd of current month which would be posted on SRPC website by 5

th of

current month. The outage proposals shall be furnished in the specified format in Excel format through E-mail to the following address.

[email protected]

b) Non-availing the OCC approved shut downs In earlier OCC Meetings SRPC/SRLDC had stated that in spite of huge efforts being put into finalizing the shutdown approvals, non-availing of the same (greater than 50%) was a matter of grim concern. Power purchase by the states was also being planned based on these approved outages and any changes affect their LGB and in some cases ATC/TTC was also getting affected. It was agreed that SRLDC would post the approved outages availed and non-availed by 3

rd of every month. Subsequently constituents should revert

back with the reasons for non-availing the shut down by 6th of every month.

SRLDC to post the approved outages availed and non-availed States/Utilities to revert back with the reasons for non-availing.

c) SR I, PGCIL had furnished consolidated list of OCC approved shut down Availed VS Non availed status during March 2016 to July 2016 which is at Annexure-2B

In 120

th OCCM, SRLDC had demonstrated the web based outage coordination system for

requisitioning the OCC approved outages on D-3 basis which is available at SRLDC website http://scheduling.srldc.org:8080/OCS/Account/Login.aspx. It was noted that the web based system is meant only OCC approved outages.

All Utilities are requested to use the same

SLDCs and RTAMC to kindly monitor the D-3/5 outages and ensure that

outages are taken as per approved schedule.

d) SRPC/SRLDC pointed out that the few constituents/utilities were not furnishing outage requests as per specified time schedule and current month proposals for AMP works were also being furnished. All the utilities were requested to follow the procedure and the time lines.

e) All the utilities to furnish the details/deviations with respect to the Annual Outage plan schedule Vs maintenance carried out on a monthly basis as this information is required for the Annual Outage Plan Deviation Report being submitted to CERC.

mailto:[email protected]

http://scheduling.srldc.org:8080/OCS/Account/Login.aspx


3. LGBR for upcoming five months 3.1 The following details to be furnished for discussion

Schedule of Hydro, Thermal Generation, RES, Purchases, anticipated consumption etc. Shortfall/Surplus, if any and how the same is proposed to be met. Arrangements to meet the Demand and Energy shortage for Sep’ 2016 to Jan’2017 Status review of Development of State of the Art load forecasting tools as per clause 5.4.2 of

IEGC. Loss of Generation due to fuel shortage- Action plan for meeting their demand and short fall

by constituents. The coal shortage issue and sharing of coal availability as per the CERC order dated

23.07.2013. Load Generation Balance in real time. Status Review of ATC/TTC calculation by SLDCs.

3.2 LGBR for upcoming five months-TTC/ATC computations: All states were requested to furnish PSSE base case for January 2017.

In the Special Meeting held on 26.04.2016, the following were deliberated: All SLDCs were requested to submit converged PSSE base case to SRLDC. As per the NPC decision/Congestion Procedure all the states were requested to publish

TCC/ATC in their respective websites.

All the SLDCs need to have a dedicated Study Group. Manpower issues need to be

addressed suitably by the Management.

Nominations from AP & TS for dedicated Study Group were awaited long back, though both

AP & TS had assured of nominations.

The following details to be updated:

5 months LGB

Converged PSSE Base case

ATC/TTC Computation furnished to SRLDC

ATC/TTC Computation posted on SLDC website

Nodal Officer Status

ATC/TTC Work shop

AP NO NO NO Date for work shop to be conducted is yet to be finalized.

TS NO NO NO 26th and 27

th July

2016

KAR NO NO NO 31st March 2016/1

st

April 2016

TN YES NO NO 12th/13

th May 2016

KER YES NO NO 12th/13

th May 2016

Pudu NO NO NO

APTRANSCO is requested to come up with a suitable date for ATC/TTC workshop at the

earliest. SRPC/SRLDC requested the states to take necessary action in this regard.

(Item No. 3 of enclosed SRLDC letter dated 29.08.2016).

4 Review of Power Supply Position /Inflows

Constituents/ Generators to furnish the reasons for deviation:

a) Actual with respect to anticipated (MW & MU) for availability and requirement. b) Generation variation category wise with respect to MoP targets/LGBR figures.


c) Inflows (MU) to major reservoirs: Actual w.r.t. 10 year moving average and w.r.t. same month last year.

d) Reasons for demand -supply gap and its variation The load shedding details in different heads along with the reasons needed to be furnished.

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.

5 Issues for deliberation 5.1 Presentations by States on Operational Issues

In the 122nd

OCC Meeting SRLDC had stated that they were preparing a template on OCC issues for enabling the focused deliberations. The template would be circulated within 15 days and all the entities individually would need to present the actions taken/being taken, progress on the issues etc from the next OCC meetings. SRLDC had forwarded the Template to all the concerned copy of which is at Annexure-5A

Constituents to come up with the presentation.

5.2 Charging of LILO section of 230 kV MAPS-Arni line at Echur S/s by TANTRANSCO- without prior concurrence from SRLDC

SRLDC vide letter dated 25.08.2016(Annexure-5B) had informed that 230 kV MAPS – Arni line was LILOed at Echur Substation by TANTRANSCO and new section had been charged on 08.08.2016 without prior concurrence from SRLDC or real time code from SRLDC Control Room. MAPS being an ISG Station prior intimation is required to be given to SRLDC about the network re-configuration and permission to charge the new section should have been obtained. The following are requested to be furnished by TANTRANSCO: The minutes of the Standing Committee Meeting approving the above Re-configuration. Extend the SCADA data provide necessary inputs for effect change in the respective

modules as above along with soft copy of the Single Line Diagram. Transmit the SEM data on a weekly basis to the following E-mail IDs

[email protected] [email protected]

SRLDC requested TANTRANSCO to kindly complete all the pre-requisite formalities as per the time lines specified in the Operating Procedures before charging the new element.

(Item No. 11 (e) of SRLDC agenda dated 29.08.2016) 5.3 Scheduling of infirm injection of KKNPP Unit 2

SRLDC vide letter dated 30.08.2016 (Annexure-5C) had submitted the following agenda for discussion in the 123

rd OCC Meeting.

KKNPP Unit -2 successfully synchronized on 29.08.2016 at 11:16 hours. For achieving full load and stabilization it may take three to four months. Discussion for scheduling infirm power prior to COD.

5.4 Inclusion of drawal of power for Mahe Region of Union Territory of Puducherry under REA In response to Puducheery’s request to include drawal of power for Mahe Region of Union Territory of Puducherry in REA, SRPC vide letter dated 08.07.2016 (Annexure-5D) had sought certain information/clarification from Puducherry. Puducheerry vide letter dated 23.08.2016(Annexure-5E) has replied for SRPC’s queries and requested SRPC to kindly arrange to review the details and obtain similar information from KSEB system so as to bring the drawal of power at Mahe Region under REA at the earliest.

5.5 Handling issues of low demand and facilitation of renewable generation absorption The issue of low demand and facilitation of renewable integration came up for discussion in the 30

th SRPC meetings held on 27.08.2016. Accordingly SRPC vide letter dated

29.08.2016(Annexure-5F) had invited attention of CEA in this regard and had requested CEA that with the objective of maximizing renewable energy absorption, the matter may kindly be arranged to be examined and necessary directions issued in this regard.

5.6 Forecast Vs Actual Demand of SR constituent




SRLDC vide letter dated 04.07.2016 had enclosed a copy of letter dated 28.06.2016 received

from NLDC/POSOCO highlighting that load forecasting in different time horizons

(daily/weekly/monthly/yearly basis) is an important input and a mandatory requirement for the

entire scheduling process and reliable operation of the power system. As per Section 5.3 of IEGC

demand estimation responsibility of SLDC/RLDC/NLDC is clearly identified. Details of action

required to be taken by SLDCs/RLDCs/NLDC were given.

The mean absolute error % (Forecasted VS Actual Demand) for the month of August 2016(till

24th) is at Annexure-5G

(Item No. 5(c) of SRLDC agenda dated 29.08.2016)

5.7 Frequent tripping of Vallur-NCTPS lines In the 122

nd OCC Meeting the following were noted:

It was noted that no trippings had been observed during July month. Insulator replacement for complete stretch of Vallur-NCTPs line had not been taken up by

TANTRANSCO. TANTRANSCO informed that they were planning for replacement of some insulators from Oct’2016 in coordination with PGCIL. TANTRANSCO was suggested to go for complete replacement.

For Gantry tower, SR-I, PGCIL had clarified that NTECL had to take up replacement. NTECL was suggested to take necessary steps.

TANTRANSCO/NTECL to update the status

Item No.14 (d) of enclosed SRLDC letter dated 29.08.2016)

5.8 Replacement of protection couplers at 220 kV substations In the 120

th OCC Meeting KSEBL had informed that the existing BPL make PLCC protection

couplers at 220 kV sub stations Edappon, Edamon, Kundara and Kayamkulam are very old and mal-operates frequently due to stray signals (generated from the panels) and to be replaced immediatelyand it was suggested that procurement can be done either by KSEBL or by NTPC/PGCIL. KSEBL had requested NTPC, Kayamkulam to intimate their willingness for procurement of Digital Protection Couplers at Edamon and Kayamkulam by KSEBL with the cost reimbursed by M/s.NTPC/PGCIL. PGCIL had informed to take up the matter in the joint meetings held at Regional level. KSEBL had requested NTPC/PGCIL to revert back. KSEBL had requested that one agency may take up the entire work.

PGCIL and NTPC are requested to look into it and revert back at the earliest.

5.9 Revival of Units at Sharavathi Generating Station: A major fire incident had occurred at Sharavathi Generating Station on 18.02.2016 at 16:43 hrs. It was noted that all the 10 units had come on bars. SGS- Shimoga 1, SGS- Talaguppa 1 & 3 and SGS- Balligave line were yet to be charged.

5.10 Maintenance of RTUs installed under ULDC Projects for Central Sector Generating Stations

5.10.1 PGCIL vide letter dated 25.07.2016 had requested all the concerned generating companies, utilities to take necessary action for maintenance/replacement of the existing RTUs installed in their respective Power Plants/Generating stations after the completion of useful life 15 years from DOCO to ensure continuous reporting of data to respective RLDCs.

5.10.2 In the 122nd

OCC Meeting after deliberations SRLDC had opined that it would be better if one single agency, PGCIL take up the maintenance of RTUs and requested all the SLDCs/CGS/ISGS to apprise their Managements in this regard. SRPC stated that all the SLDCs/entities could apprise their Higher Management and the issue would be put up to TCC. The issue could not be discussed in the TCC due to paucity of time

5.11 Progress of NLC TS II – TS I Expansion re-conductoring works- end span work SRLDC/SRPC had clarified that until unless the end portion is reconductored, the enhancement of capacity of the line would not be considered for any of the operational purposes and the very purpose of reconductoring as per CERC directions was not achieved. In the 122

nd OCC Meeting, PGCIL, SR-II agreed to carryout the works during November

/December 2016.


(Item No.14 (f) of enclosed SRLDC letter dated 29.08.2016)

5.12 Scheduling of NTPC Ramagundam Solar Power Plant(10 MW) 5.12.1 To facilitate scheduling by SRLDC the following prerequisite criteria was to be met by NTPC:

Forecasting of generation. MW-MVAR data of the station. Voltage at inter connecting point. Inverter status SEM as per CEA, Metering Regulations, 2006 Data compatibility with SRLDC format etc.

5.12.2 In the 122nd

OCC Meeting the following was noted: NTPC had informed that the actions were delayed since NTPC Management was

planning to approach TSTRANSCO and APTRANSCO for allocating full quota of 10 MW power to TSTRANSCO. However the data was sent to SRLDC with existing energy meters. They had approached M/s Kalki Technologies for provision of Protocol 101/104.

SRPC had pointed out that unallocated quota was linked with NTPC Ramagundam Solar and MoP would be required to be appraised if full quantum is taken by TS.

SRPC/SRLDC requested NTPC to complete the works and not link the two issues.

(Item No.11 (b) of enclosed SRLDC letter dated 29.08.2016)

5.13 Implementation of URTDSM (PMU) project in Southern Region It was noted that the revised schedule for completion of the project was Janury 2017. In the 122

nd OCC Meeting it was suggested that a separate Meeting may be conducted to

deliberate the issues regarding URTDSM in depth with the participation of M/s Alstom. Subsequently, a Meeting was conducted at SR II, Yelahaka, Bangalore on 23.08.2016. The minutes of the Meeting is available at SRPC web site.

In the meeting PGCIL had confirmed that training would be provided to all constituents & SRLDC on PMUs & Control Centre HW / SW training on SAT procedure before commencement of SAT. It was also agreed that in addition to providing exhaustive SAT procedure, training etc., PGCIL (LD & C) representative would also witness the complete SAT in any one location (say at SRLDC) wherein all constituents of the region could participate and get trained. Subsequently, individual constituent can take-up SAT independently in their locations.

5.14 Video Conferencing facility at SLDCs Status as furnished in 122

nd OCC Meeting:

AP KAR TN PUDU

Will provide the facility in new SLDC at Vijayawada by December 2016.Installation of SCADA at Vijayawada was under progress.

The needful for VC facility had been completed and VC would be in place within two days.

Technical bid had been opened on 3

rd

August 2016. Price bid is expected to be opened within one week.

Puducherry had informed that Budget for 2016-17 had not been approved yet. GM, SRLDC assured that he would take up with Puducherry Higher Management.

(Item No. 4(a) of enclosed SRLDC letter dated 29.08.2016)

5.15 Patrolling / Maintenance of critical lines and substations 5.15.1 In recent times insulator tracking has been observed in the Transmission lines and

Substations located in the coastal and polluted areas. The format for furnishing the details of schedule / Patrolling and Maintenance carried out of the critical Transmission lines and Substations had been circulated. It was requested to furnish the necessary details in the specified format by 18.5.2016 positively.

5.15.2 It was noted that MEPL, SEPL, NTPC Simhadri (not in format), APTRANSCO & KSEBL had furnished the details. KPTCL was requested to do the patrolling on an urgent basis and was requested to furnish the requisite information.


5.15.3 Subsequently KPTCL had furnished the details which are at Annexure-5H. It was noted that details of only Kadakola-Kaniyampet line furnished.

Other entities are requested to furnish the details regularly/urgently.

5.16 Non reporting of various 110 kV SS data of Puducherry ED to Pondy SCC/SRLDC 5.17 ED, Puducherry vide letter dated 26.08.2016(Annexure-5I) informed regarding the non reporting

of various 110 kV SS data of Puducherry ED to Pondy SCC/SRLDC. Mentioning the reasons for failure of communication and action to be taken to reestablish the data communication, PED requested that necessary instructions may be issued to the concerned to make the communication links with the SCC Pondy in order to establish the data communication and to ensure the grid compliance and load relief mechanism.

5.18 Neyveli TS I Expansion- ABT deviations in Ramp up/down NLC TS I expansion vide letter dated 24.08.2016(Annexure 5J) had requested to revise the Ramp up/down values on 24.08.2016 for some of the blocks.

5.19 RRAS-Ramp up/Ramp down rate discrepancy in FORM AS3 furnished figures and values declared on daily basis in web scheduling Program

5.19.1 SRLDC vide E-mail dated 24.08.2016 (Annexure 5K) had informed regarding the mismatch observed wrt Ramp Up and Ramp Down rates of NLC TS-I, NLC TS-II, NTECL & VTPL in FORM AS3 furnished figures and values declared on daily basis in web scheduling Program. It is requested to take necessary actions as below:

All stations mentioned in the E-mail to submit the correct ramp up/down in scheduling programme & ancillary services AS3 matching with each other

NTPL ramp rate of 15MW/ Block/unit appears to be too low & may be revised in line with OEM norms & other ISGS

6 Grid Frequency:

6.1 High frequency

a) High frequency at Load Change Over. b) Status review of implementation of staggered load change over within the constituents as per

the decision of 23rd

SRPC meeting, moderating own generation, surrendering of ISGS power in advance and other actions by Regional Entities to avert high frequency excursion.

c) Pump Mode Operation of Nagarjunasagar/Srisailam LB / Kadamparai HEP units. It is observed that Kadamparai units are being operated in pump mode.

d) Procedure for operation of N’Sagar in pump mode. (Item No.5 (d) of enclosed SRLDC letter dated 29.08.2016).

6.2 Low Frequency

a) Summary statement of different violation messages issued by SRLDC to each constituent as per new IEGC Amendment.

b) Summary statement of Deviation & Zero-Crossing Violation messages issued by SRLDC to each regional entity as per new IEGC Amendment.


7 Voltage Profile

7.1 Low Voltage 7.1.1 Low voltage at Somanahalli, Nelamangala, Bidadi, Hosur, etc.

7.1.2 Action to avert low voltage profile. Messages and letters issued by SRLDC. Details of Capacitors installed in August 2016. Details of the healthy/faulty capacitors to be furnished.

7.1.3 KPTCL to furnish the updated status of the following:

Issues with BESCOM

Retrofitting/Commissioning of 30 MVAR Capacitor banks at Hoody/Somanahalli.

Any other action taken to improve the voltage profile in and around Bangalore.


7.1.4 It was noted in the special Meeting held on 26.04.2016, that SRLDC had conducted a Study to ascertain requirement of capacitive compensation in low voltage areas of SR viz. Bengaluru area, Udumalpet-Arasur-Hosur-Salem area and Trichur-Palakkad area. From the studies, Capacitor requirement had been arrived as below:

7.1.5 UV Relay:

KSEBL: To be implemented at Trichur, Palakkad & Kochi

KSEBL vide letter dated 25.08.2016 (Annexure-7A) had furnished the details of implemented logic with feeders name and informed that mock testing has been conducted through SCADA for all the identified feeders on 09.08.2016. All the corresponding tripping relays for the configured feeders were found operational except for Mylatty substation, where the control card of the RTU

is found faulty. The replacement is under progress.

KPTCL: To be implemented at Nelamangala, Somanahalli, Hoody and Bidadi In the 122

nd OCC Meeting KPTCL had informed that Stage-I UVR scheme at Somanahalli was

made ready and would be implemented upon receipt of BESCOM’s approval. The feeders had been identified for implementation of UVR at Somanahalli (for Stage-II 100 MW), Hoody & Nelamangala as recommended and BESCOM Management approval was awaited. UVR at these places would be implemented by August 2016.

TANTRANSCO: To be implemented at Udumalpet, Salem & Hosur In the 122

nd OCC Meeting, UVR St-I had been implemented at Udumalpet. It was noted that UVR

St-I at Udumalpet is set at 5 minutes and to be changed to 10 minutes as recommended.TANTRANSCO had informed that feeders have been identified for UV Relay implementation at Hosur & Salem and were furnished to P & C wing of TANTRANSCO.

(Item No. 6 (a), (b) and (c) of enclosed SRLDC letter dated 29.08.2016)

7.2 High Voltage a) High voltage at Vijayawada, VTPS, Hyderabad, Nagarjuna Sagar, Gooty, Kurnool,

Malkaram, Hassan, Srisailam, Sattenapalli, Narendra, Almatty, Raichur, Mahaboobnagar, and 765 kV stations namely NPS, Thiruvalam and Kurnool stations.

b) Messages and Graphs. c) Status review of implementation of generator GT tap changes as per Special MVAR

Meetings and previous OCC Meetings. d) MVAR Capabilty testing of N’Sagar- date finalization.

(Item No.7 (a) & (c) of enclosed SRLDC letter dated 29.08.2016).

7.2.1 Condenser mode of operation of Nagarjuna Sagar and Srisalam LB

In the 122nd

OCC Meeting, the following were noted:

Sub-Station

Capacitor –

Requirement

in MVAR

Constituent

wise

requirement

Timeline Remarks/Action Taken

Nelamangala 160 Karnataka-

505 MVAR

By

Dec’2016

It was noted that 708.8 MVAR capacitors

were planned in Bengaluru Transmission

Zone. Hoody 185

Somanahalli 160

Mywadi 275 Tamil Nadu-

1025 MVAR

Status?

Arasur 330

Salem 210

Hosur 210

Palakkad 12 Kerala – 102

MVAR

KSEBL informed that they had studied

and finalized the Capacitor Requirement

as 360 MVAR. Trichur 90


TSTRANSCO/TSGENCO had agreed to put all the units of Srisailam LB in condenser mode during 2200 Hrs to 0500 Hrs( next day). It would take one and half hour to take all 6 units in condenser mode since units can be added with a gap of 15 minutes. SRLDC suggested that the voltage changes prior and after condenser mode of operation can be analyzed.

TSGENCO had informed that in case of Nagarjuna Sagar, 5 units out of 8 units can be run in condenser mode and all the 5 units can be run simultaneously.

TSTRANSCO was suggested to run the units proactively whenever the high voltages were prevailing without waiting for the SRLDC instructions.

7.2.2 Tap changes for the following units were pending:

Statio

n

Unit Present tap

and

corresponding

voltage(in kV)

Recommende

d Tap and

Correspondin

g Voltage(in

kV)

Remarks

ISTS connected Generators:

Kaiga

I

1 & 2 6 & 229.125 7 & 223.25 In the Special Meeting held on 19.05.2016 it was decided that NPCIL would expedite the procurement of 2x125 MVAR Bus Reactors simultaneously. Further suitable measures would be taken by Kaiga (U1 & U2) and Kaiga (U3 & U4) to ensure that no VAR injection takes place (from LV side) at voltages greater than 220 kV and 400 kV respectively. It was assured by Kaiga U3 & U4 for absorption upto 60 MVAR each from their Units. Kaiga Unit 1 & 2 also assured that absorption form their units would be as per the corresponding capability curve.

Kaiga

II

3 & 4 3 & 409.5 4 & 399

APGENCO/APSLDC

HNPCL 1 6 & 409.5 7 & 400 HNPCL vide letter dated 12.08.2016 had informed that Unit-1 would be changed to 7 (400 kV) during next opportunity.

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

Kadra All units 7 & 225.5 8 & 222.75

Kodasall

i

All units 7 & 225.5 8 & 222.75

Sharava

ti

9 2 & 231 4 & 220 KPCL had informed that tap could not be

changed due to technical problems.

UPCL 1 & 2 4 & 409.5 5 & 400 Observed rotor teeth temperature issues and

OEM was called. OEM expected during

June/July 2016.

2 x 125 MVAR reactors agreed in 39th


SCPSPSR

TANGEDCO/TN SLDC

Tuticorin

TPS

1,2,3,4 & 5 8 & 243 230 TN had informed that as per their study for

2016-17, it was suggested that all the generator taps of TTPS will be changed from the present position of tap no 8 to tap no 10 (15.75/237 kV).

SRPC/SRLDC had stated that the Tap positions had been would be reviewed as per the MVAR/voltage conditions.

MTPS

St.III

1 6 & 409.5 7 & 399 GT is provided with off load tap changer. Tap

will be changed to 7 after provision of bus

reactor at MTPS II in order to cope up with

voltage rise. The commissioning works of

reactor is under progress.

7.2.3 Tap optimization of ICTs in SR

SRLDC vide letter dated 19.05.2016 had taken up ICT Tap optimizations studies to suggest tap change action at 765/400 kV and 400/230-220 kV SS. However the optimization is effective only if it is done upto sub transmission level. To expand optimization study to this level SRLDC had requested 230/110 kV, 220/110 kV, 220/66 kV, 210/130 kV transformer technical data and voltage data from SCADA for peak and off peak scenario. In the 121

st OCC Meeting it was noted all other states except APTRANSCO. APTRANSCO had

informed that they had taken up the issue with all the DISCOMs and the information received

(except Kadapa zone) had been furnished to SRPC/SRLDC.

7.2.4 Status review of Bus/Line Reactors, Line Reactors and STATCOM As approved by Standing Committee meeting. Status of commissioning of Bus Reactors

(Item No.7 (b) of enclosed SRLDC letter dated 29.08.2016).

Entity Bus Name Status REMARKS

KPTCL

Hoody Reactor erected on

platform. September 2016

Nelamangala Reactor and bay

equipment installed.

Contractual issues with

BHEL wrt Reactor panel.

December 2016

Entity Bus Name

Capacit

y in

MVAR

Approved in Type Remarks

PGCIL

Vijayawada 2x125 20

th SRPC/ 34

th

SC Bus One bus reactor at

Vijayawada has been

commissioned. Other

reactors Nagarjuna

Sagar 125

21st SRPC/ 34

th

SC Bus


Narendra 125 21

st SRPC/ 34

th

SC Bus

Would be Commissioned

progressively from Sep 2016

to Dec 2016. Bays were

ready for all the reactors.

PGCIL SRII informed that as per the revised scheme, it was proposed only one 63 MVAR Reactor at Yelahanka against the 2 x 63 MVAR as approved in SCPSPSR. Pre-commissioning checks had been completed for one reactor. PGCIL SR-II was suggested to ratify the change in the Standing Committee.

Hyderabad 125 21st SRPC

Gooty 125 22

nd SRPC / 36

th

SC Bus

Hassan 125

36th SC

Bus

Khammam 125 Bus

Kudgi PG 125 Bus

Trivandrum 125 Bus

Nellore

(Existing) 125 Bus

Yelahanka 2x63 Bus

Nellore PS

on NPS-

Gooty Line

2 x 63

(37th

SC)

Line

Kudgi PG–

Tumkur

D/C at

each end

4 x 63 Line

Cuddapah 50 to

125 39

th SC

Thiruvalam

765 kV 2 x 240 39

th SC

SRLDC had requested

PGCIL to commission the

765 kV BRs on priority basis.

APTRANSCO

Vemagiri 125

36th SC

Bus

PO has been placed in the

month of June 2016 with a

delivery schedule of 18

months.

Kurnool 125 Bus

Kalpakka 125 Bus

Chittoor 125 39th SC

Vijayawada 125 39th SC

APTRANSCO/

APGENCO

VTPS

Stage IV 125 39

th SC

KPTCL Davangere 125 39th SC

KPTCL informed that action


7.2.5 The following was noted in the 122nd

OCC Meeting:

Talguppa 125 39th SC

would be initiated within a

week.

TANTRANSC

O

Almathy 125 39th SC

Kaythar 125 39th SC

TANTRANSC

O/

TANGEDCO

Mettur 125 39th SC

TN had informed that Mettur-

Tiruvalam line would be

LILOed at Palvadi in

Nov’2016 and opined that

BRs at Mettur may not be

required being short lines.

Palvadi SS was approved in

37th SCPSPSR and

subsequently in 39th

SCPSPSR, 125 MVAR BR

was approved. Hence TN to

take up accordingly.

TSTRANSCO

Mamidipalli 125

36th SC

Bus

LOI was ready and awaiting

PSDF funding. SRLDC had

assured that they would take

up with NLDC.

Gajwel 125 Bus

Sankarapal

li 125 Bus

Mehboob

Nagar 125 Bus

Malkaram 125 Bus

TSTRANSCO/

TSGENCO

Srisailam

LB 125

39th SC

TS informed that Technical

feasibility from CEA was

awaited. SRPC stated that

the reactor was approved in

39th SCPSPSR and TS

would take up accordingly.

NPCIL Kaiga 2 x 125

Bus

In the Meeting, Kaiga GS

informed that technical

specifications for both the

reactors had been prepared

and submitted to HQ.

Approval is expected by end

of Aug-2016.

UPCL Udupi 2 x 125

39th SC

Awaiting CERC clearance

for capitalization. UPCL was

suggested to file IA with

Hon’ble CERC.


Kudgi, NTPC Bus Reactor: NTPC had informed that commissioning works were under progress for the bus reactor and was expected to commission by end of August 2016.

All the constituents were requested to update the status of implementation of reactors on a monthly basis with OCC data.(State wise/ location wise / status of implementation like tender called, PO placed)

7.2.6 In the special meeting with NPCIL/BHAVINI held on 19.05.2016, the following were deliberated with respect to KKNPP reactors:

NPCIL had assured that they would take up the matter with CTU regarding finalization of reactive requirements, keeping in view no absorption by the Stage- II units. Limitation of 100-150 MVAR absorption for limited period but not on sustained basis would also be communicated.

In the 122

nd OCC Meeting, KKNPP informed that they would revert back on updated status.

7.2.7 NGR bypass of Reactors SR I and SR II were requested to submit the consolidated list of Reactors with the status of NGR

Bypass.

7.2.8 Reactive Power Planning: Utilities to furnish schemes relating to Reactive Power Planning including at distribution level. The time schedules for implementation would also be indicated.

Utility Reactive Power Planning Voltage

level

Remarks

APTRANSCO

32 x 7.2 MVAR 4 x 14.4 MVAR

On 33 kV

side

4 x 7.2 MVAR Capacitors installed

APEPDCL Srikakulam : 5 x 2 MVAR Vizianagaram : 2 x 2 MVAR Visakhapatnam: 5 x 2 MVAR Rajahmundry :10 x 2 MVAR Eluru : 4 x 2 MVAR

33/11 kV

Level

Updated status to be furnished

APSPDCL April 2015 : 11 x 2 MVAR

May 2015 : 16 x 2 MVAR

July 2015 : 1 x 2 MVAR

Aug 2015 : 2 x 2 MVAR

Sep 2015 : 2 x 2 MVAR

11 kV level Updated status to be furnished

TSNPDCL 123 x 2 MVAR 118 x 1 MVAR

72 x 2 MVAR and 57 x 1 MVAR capacitors had been installed.

TSSPDCL 221 x 2 MVAR 11 kV level 209 x 2 MVAR commissioned.

KPTCL Bengaluru Tr. Zone:708.8

MVAR

12.1 kV Retendered on 19.05.2016. Bids will be opened on 10.08.2016

Bagalkot Tr. Zone :258.1

MVAR

12.1 kV 39 Capacitor Bank supplied- to be erected. 35 nos/ 15 nos inspection raised/ to be raised.11 KV switchgear placed on M/s MEI – delivery from last week of July 2016

Hassan Tr. Zone :136.3

MVAR

12.1 kV 13 Capacitor Bank supplied- to be erected. 16 nos partially supplied. Balance 11 Nos to be supplied. 7 nos Capacitor cell installed. Foundation completed 22 nos.


Mysore Tr. Zone :60.9 MVAR

12.1 kV All 21 nos (2.9 MVAR) Capacitor Bank supplied. 11 KV switchgear placed on M/s MEI on 28.01.2016 18 Nos Capacitor Banks & 18 Nos DP Structure started

Gulbarga Tr. Zone :98.60

MVAR

12.1 kV 17 Nos (2.9 MVAR) Capacitor Bank supplied. 17 Nos to be supplied.

Tumkur Tr. Zone :281.3

MVAR

12.1 kV

KSEBL 15 MVAR 66 kV Have done reactive compensation study.360 MVAR is planned.

360 MVAR 11kV New proposal to be firmed up

TANGEDCO 34 x 2.4 MVAR 11 kV Materials received

36 x 2.4 MVAR 11 kV Additional – Administrative approval accorded

16 x 2.4 MVAR 22 kV 6 x 2.4 MVAR would be installed at Salem/Coimbatore by July 2016

51 x 2.4 MVAR 22 kV Additional – Administrative approval accorded

7 x 24 MAVR 110 kV Retendering.

931 MVAR of capacitors at distribution level had been commissioned out of 1,005 MVAR capacitors planned.

In the 4

th NPC meeting held on 10.12.2016, the following were the decisions/actionable points w.r.t.

Reactive Power Planning:

All States to carry out reactive power planning not only at transmission level but also at

distribution level and prepare schemes to maintain voltage profile as per relevant Regulations /

Standards.

NPC agreed that states should adopt a proactive approach in the matter of reactive power

planning, and that the provisions regarding reactive power planning similar to those mandated in

the IEGC for the CTU should be included in the respective State Grid codes. It was decided that

RPCs would follow up the matter further with the states.

8 Network Protection/Security issues: 8.1 AUFR, df/dt 8.1.1 Implementation of SRPC recommended quantum

In accordance with clause 9 (2) of CEA (Grid Standards) Regulations, 2010, all constituents shall submit a detailed report of operation of AUFR at different frequencies to SRLDC and SRPC on daily basis. It was noted that only KSEBL and PED were submitting the daily report regarding operation of relays.

8.1.2 SCADA mapping of feeders of AUFR & df/dt schemes:

The status is as follows:

State SCADA mapped %

Status

AP 42 Purchase Order has been placed for procurement of 25 RTUs on 31.07.2016. With the commissioning of these RTUs 70 % SCADA mapping would be achieved. For balance quantum, Higher Management was apprised.


TS 64 TSTRANSCO informed that 24 RTUs were to be procured for 100% SCADA mapping. Proposal has been put up for Management approval which is expected by August end.

TN 92 Additional RTUs needed to be procured for 100% SCADA mapping. TN was requested to initiate action to reach 100 % availability and revert back regarding the action taken within 7 days.

SR States to complete 100 % SCADA mapping of AUFR & df/dt relays by 31

st December 2015

as per CERC Order dated 27.11.2015 on Petition No. 60/MP/2014. A monthly report on the action taken to reach 100 % availability may be furnished to SRPC/SRLDC by States.

(Item No.8 (a) of enclosed SRLDC letter dated 29.08.2016).

8.2 Special Protection Schemes(SPS) 8.2.1 Implementation of additional loads for KKNPP SPS

It is noted that mock test was not conducted on 19th August 2016 as scheduled due to problems

at Somanahalli. It is decided that date for mock test would be finalized in the forthcoming PCSC Meeting scheduled to be conducted on 02.09.2016 at Hyderabad.

Status of loads identification/wiring and Mock exercise.

(Item No.8 (e) of enclosed SRLDC letter dated 29.08.2016).

8.2.2 SPS operations

SRLDC to furnish SPS operation details along-with relief obtained in each OCC for previous month.

Spurious action of Raichur-Sholapur SPS on 13th and 20

th August 2016. Measures to be

taken to avoid such operations. E-Mail dated 29th August 2016 from SRLDC to PGCIL is

at Annexure-8A SR II, PGCIL response on this issue communicated vide E-mail dated 30

th August 2016

enclosing letter dated 29.06.2016 is at Annexure-8B KSEBL vide letter dated 12.08.2016(Annexure-8C) has reported about the non receipt of

RSTS SPS signal at Kerala on 09.08.2016. It was informed by SRLDC that due to overloading of 765 kV Raichur-Sholapur feeders the RSTS signal transmitted from Kolar on 09.08.2016 at 07:07 hours. KSEBL informed that major alarms are persisting in the DTPCs installed at Madkkathara and Edappon and MUX problem at Pallom. It is requested by KSEBL that necessary direction may kindly be given to concern for rectifying the problem before commissioning of SPS for KKNPP Unit – 2. The signal transmission from Kolar to Madkkathara and Kolar to Kanhirode has to be tested in connection with the SPS for KKNPP Unit-2.

(Item No.8 (e) & (f) of enclosed SRLDC letter dated 29.08.2016).

8.2.3 Extension of SPS status points to SRLDC

In the 119th OCC Meeting, SRLDC had informed that SPS status points also needed to be

mapped /extended to SRLDC SCADA. The intent was to monitor from SRLDC SCADA that which

SPS operated, which feeders tripped etc.

In the 121st OCC Meeting the following were noted

PGCIL had intimated that technical analysis is required along with agency that had implemented or programmed the logic. Coordination with WR is also required.

SRPC had suggested that analyzing NLDC logic by Protection Group/System Studies Group of SRLDC may help in resolving the issues/finding the solution.

Status update by PGCIL.

8.2.4 SPS Maintenance Protocol


SPS Maintenance Protocol had been approved in 27th TCC & 28

th SRPC meetings held on 9

th&

10th October 2015. SR-II had informed that the proposal from M/s ABB had been received and

proposal from M/s ALSTOM was yet to be received. Status update by PGCIL.

8.2.5 Discussion on System Protection Using Optimization Technique(SPUOT) In the 122

nd meeting, SRLDC had proposed to make a group of feeders which would be

dedicated for tripping of various SPS operations in rotational manner in order to avoid repeated tripping of the same feeders connected under one SPS in the present scheme of arrangement. These dedicated feeders with designated quantum of loads would be tripped rotationally as per the required quantum of loads to be tripped set for different SPSs. Requirement of SPS loads could be reduced / optimized. OCC had felt that SRLDC could come up with draft scheme in the next OCC and the same would be deliberated in detail.

Item No.8 (g) of enclosed SRLDC letter dated 29.08.2016)

8.3 Status Review of Automatic Demand Management System

8.3.1 All constituents had confirmed about the implementation and enabling of ADMS in their

respective system. Changing the set points to 49.9 Hz. would be taken up in 29th TCC Meeting.

Record of the instances satisfying the logic for ADMS operation in the Region can be maintained

and put up to next TCC. It was observed that the number of instances had come down over past

few months.

8.3.2 It is noted that the issue was deliberated in the TCC Meeting of SRPC held on 26.08.2016 at

Chennai. The minutes of the Meeting are awaited.


8.4 LVRT/Provisions of CEA Regulations for Renewable

8.4.1 Hon’ble CERC has passed Order in respect of Petition No. 420/MP/2014 on 05.01.2016. The

Order directs a number of actionable points by various utilities for compliance of LVRT, CEA &

CERC Regulations etc. Three Special Meeting were conducted at SRPC Bangalore on

05.02.2016, 18.04.2016 & 05.07.2016 (Meeting minutes are available at SRPC website).

8.4.2 This issue was further discussed in the Special Meeting held on 02.08.2016. (MoM are available

at SRPC website).

State AP TS KAR KER TN

Submissio

n of the

data

In 29th TCC,

agreed to

furnish the

data by

10.09.2016

Furnished in

the format

In 29th TCC,

agreed to furnish

the data by

10.09.2016

In 29th TCC,

agreed to

furnish the data

by 10.09.2016

Furnished the

data. Data is

at Annexure-

8D

Nominatio

n of Nodal

Officers

Received Received Received Received Received

Meeting

with RE

Developer

s

Follow up

Meeting

Scheduled

for

07.09.2016.

Meeting

conducted

Meeting

conducted on

17.08.2016.

Minutes of the

Meeting at

Annexure-8E

TN would hold

the meeting

with WTGs by

Aug’2016.

KSEBL

SLDC was

suggested to

call for

meeting with

RE

Developers

before SRPC

meeting.


Complianc

e of CEA’s

Connectivi

ty

Regulation

s

Planning

Wing was

taking care

to ensure

compliance

Suitable clause had been included in the bidding document of RE to

ensure strict compliance of CEA’s Connectivity Regulations for all

WTGs commissioned after 15.04.2014 and to ensure strict compliance

of LVRT feature for all Solar Generators connected above 11 kV

(whose NIT was not issued by 05.01.2016).

Had prepared a

Standard

Procedure for

Solar from

inception to

commissioning

which covers all

the requirements

for integration into

TS Control Area.

The procedure

would be uploaded

in TSTRANSCO

website. They

would put up the

issue for

Management

Approval

TSTRANSCO was

suggested to share

the details with the

other

utilities/SRLDC/SR

PC

Requirement

for WTGs

was being

ensured for

the Turbines

being

commissione

d.

Forecasting

and schedule

were already

covered in

their RE

framework of

KERC. Other

requirements

of

CERC/CEA

regulations

have been

referred for

compliance in

the

framework.

Further

deliberated in

the Meeting

held on

17.08.2016

Taking care of

the

requirements

for the WTGs.

Taking care

of the

requirements

for the

WTGs.

Preparatio

n of

quarterly

reports by

SLDCs

In 29th TCC meeting held on 26

th Aug’ 2016 , it was agreed that Quarterly reports for two

quarters (Jan-March 2016 & April-June 2016) would be furnished by 15.09.2016.

Report to

CEA with

respect to

N-1

contingen

cy line

loadings

In 29th

TCC meeting held on 26th Aug’ Report on N-1 compliance of their systems and

submit the reports to CEA within 3 months.

Data

Acquisitio

n System/

Real Time

Data

Availabilit

Out of 1100 MW renewable generators, about 900 MW (>80%) is integrated

98.7 MW of wind

capacity was

integrated to

SCADA. 350 MW of

solar capacity (EHT

level) out of 693 MW

KSEBL was

requested

to ensure

the SCADA

availability

of RE at the

Regarding 840

meters which

would be

connected on

the dedicated

renewable


y of

SCADA

system as

envisaged

in the

IEGC

to SLDC. The balance quantum was not compatible for SCADA mapping as they were commissioned before 2012. New generators are being directed to commission the feature for mapping.

of solar installed

capacity had been

integrated to

SCADA. Balance

343 MW of solar

capacity which is

connected at 33 kV

level and below was

yet to be integrated

to SCADA and it was

being pursued with

the RE developers.

SLDC. feeders at 22

kV and 11 kV

(through

MPLS), the

meters had

been installed

but modems

were yet to be

commissioned

and the

scheme would

be completed

by December

2016. It was

also informed

that tendering

was under

progress for

AMR energy

meter scheme

for around

11,000 meters

(3,000 meters

already

existing) and

the scheme

would be in

place before

next wind

season.

STU/SLDC

s would

communica

te to the

Wind

Developers

for setting

the

characterist

ics of LVRT

feature and

other

provisions

of CEA

Regulation

s within

end of July

2016.

They would

take up the

issue with

Wind

Developers

in the

meeting

schedule for

17.08.2016.

They had

communicate

d to the Wind

Developers

However,

there was no

response

from the

Wind

Developers.

STUs/SLD

Cs to

approach

SERCs on


various

issues

STU/SLDCs had been suggested to approach respective SERC’s for the following:

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

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

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

generators provide real time data to SLDCs as per the provisions of Grid Code. SLDCs to

ensure availability of data in respect of real time data from their Data Acquisition Systems of

solar/wind generators in SCADA systems to respective RLDCs as per the provisions of the

Grid Code.

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

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

estimation by SLDCs.

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

that wind energy generators comply with the provisions of CEA Technical Standards for

Connectivity Regulations for grid connectivity before granting connectivity to the grid.

STUs had agreed to take up the issue with SERC for the above requirements.

Wind Developers had been requested to take up with SERCs to consider allowing the cost of

retrofitting WTGs with LVRT under the provision of 'Change in Law' in the respective PPAs.

STUs were requested to coordinate with wind developers and ensure the issue is appraised

to SERC.

All the constituents to ensure provision and enabling of LVRT feature in all the upcoming wind/solar generators before declaring COD. SLDCs were requested to approve connectivity to new generators only on confirmation of availability of LVRT feature and other CEA/CERC requirements. Monthly report of compliance needs to be furnished for new wind/solar generators added to the grid.

(Item No. 8(c) of enclosed SRLDC letter dated 29.08.2016).

8.5 Status review of action for grouping of loads (IEGC clause 5.4.2 (e) 8.6 Status Review of tripping details/reports

Non-furnishing of tripping analysis, DR & EL printouts with in 24 hrs as per IEGC by the SR

Regional Entities.

All tripping related information would be uploaded in SRLDC web based program. FIR would be furnished within 10 to 20 minutes of the incident. Non furnishing of tripping analysis, EL and DR printouts within 24 hours in line with IEGC/CEA regulations by the SR regional entities. CERC Order on Petition No. 146/MP/2013.

(Item No.8 (d) of enclosed SRLDC letter dated 29.08.2016).

8.7 Submission of Declaration on availability & healthiness of control, monitoring and Protection equipments / defense mechanism Schemes in SR on monthly basis by all the Regional Entities.

8.8 Status Update on Emergency Restoration System (ERS)

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

Transmission Utility

Requirement as per MoP

Existing Status/Remarks

APTRANSCO 3 Nos. ERS I – Placed at Nellore. ERS II – Received on 25.04.2016 and would be kept at Vizag. ERS III- Under consideration

TSTRANSCO 1 No. Tendering under process.

KPTCL 2 No. 2 Nos. ERS

KSEB 1 No. Appeared not to be feasible as per the assessment. KSEBL agreed to reconsider.


9 SCADA & Communication Issues a) Review of SCADA Computation Philosophy of drawal by state utilities.

b) A Special Meeting was held on 23.08.2016 to deliberate on pending SCADA/Communication

issues. Minutes of the Meeting is uploaded on SRPC website. Pending Items as on date and action plan finalized in the Special Meeting are as follows:

Issue Action Plan

1 Establishing E1 Link between Backup SRLDC to Backup NLDC

PGCIL vide E-mail dated 25.08.2016 informed that the E1 ICCP link between backup SRLDC (at NRLDC) & backup NLDC (at ERLDC) has been established and the port numbers are as given below: NRLDC end: E1-1-110-2 (Contact person: Mr. Narendra Kr Meena, Sr. Engr/NR-ULDC, 9810082410) ERLDC end: Slot-25 / Port-14 (Contact person: Mr. Shamik Nandi, Engr, ER-ULDC, 9830078558)

2 ICCP link between KPTCL Main & Backup SRLDC

It was agreed to call for a meeting between KPTCL, ABB, SRLDC & ALSTOM within a week with joint co-ordination of SRLDC & KPTCL.

3 Reporting of Status point of Gazuwaka (Isolators not reporting)

SRLDC had acknowledged the receipt of the same and they would revert back on verification / validation at SRLDC end.

4 Data discrepancies between site & SCADA values

All faulty data points involved in computation of real time grid drawl of constituents need to be attended immediately and resolved within a week by effective co-ordination of SR – I, SR – II and SRLDC by taking this assignment with exclusive focus. Other points of discrepancies will be resolved in subsequent weeks but within a month.

5 Updation of Scheduled share/Difference in deviation

SRLDC to look into the matter on updation of scheduled share. On difference in deviation, SRLDC informed that scheme of SCADA w.r.t. SEM point connectivity has already started for AP and the same would be taken up for all the constituents. They are ready for a joint verification on interchange values with standard Power Quality Analysers.

6 Replacement of Faulty status card at Vijaywada S/S

PGCIL had informed that the faulty Status card will be replaced in 2 weeks’ time in coordination with OEM

7 Replacement of Transducer at NTPC Ramagundam

NTPC had confirmed that that the procurement action for programmable transducer procurement is under process and the material receipt expected in a month. Accordingly the RTU replacement work will be completed within 2 months.

8 Providing additional RTU at NTPC Talcher

RTU procurement is under progress by NTPC and the same will be completed in 2 months.

9 Establishing Standby data channel from NPCIL Kaiga

PGCIL had confirmed that the link will be provided by end of August 2016

10 Frequent interruption of communication link between KSEBL back-up SLDC &

PGCIL had agreed to look in to the matter and resolve on priority

TANTRANSCO 2 Nos Approval received

PED Nil

PGCIL 4 Nos. ( 2 Nos additional)

2 Nos (SR I & SR II was having 1 No. each)

Order had been placed. Would be kept at Vizag and Chennai. Expected by June 2016 TSTRANSCO suggested that one ERS could be kept at Hyderabad. 765 kV ERS (one each for SR-I & SR-II) under process.


SRLDC back-up control centre

11 Non-availability/ Continuous interruption of DCPC communication:Madurai/Puducherry/Salem

PGCIL to analyse the reasons for link outages on the given dates and will furnish the details within a week.

12 Training on RTU

maintenance

A training module on RTU maintenance is being organised at Hosur S/S on 15

th September and all CGS of SR and

Regional Entities will be invited to attend the same.

13 RLDC Certification for filing

CERC tariff petition for

ULDC assets (OPGW

communication links)

PGCIL to present a procedure for certification of communication links and related assets in forthcoming OCC, where it will be deliberated and approved

14 OPGW stringing on balance

portion of KPTCL lines

SRPC that the issue is marked for discussion in forthcoming SRPC meeting. The issue has been deliberated in the SRPC Meeting and as agreed by Powergrid the nodal officers names from Powergrid for coordinating this issue was furnished by Powergrid vide their letter dated 30.08.2016(Annexure-9A) It was requested by Powergrid that Nodal Officer may be nominated from KPTCL for close coordination and smooth and early completion of the project.

c) SRLDC had invited attention of the forum that CERC had brought out Order on Suo moto Petition

007/SM/2014 dated 29.01.2016 regarding SCADA. It was directed by Hon’ble CERC that NLDC and respective RLDC are directed to update the status of telemetry every month at their website and persistent non availability of data from the generating stations/substations be taken up in RPC meeting for appropriate direction and action. Also NLDC is directed to submit user wise latest telemetry by 31.08.2016. SRLDC informed that they have started posting this information from February 2016 on their website.

d) Compiled Telemetry status – Utility wise- as directed by Hon’ble Commission The issue was being heard in CERC’s Suo-moto Petition No. 56/SM/2013.

(Item No. 4(a) & (b) of enclosed SRLDC letter dated 29.08.2016)

10 Physical and Cyber Security/Crisis Management Plan/Black Start Procedure

10.1 Status update on Crisis Management Plan(C&DMP) of Power Sector is to be furnished every quarter. The information regarding Cyber Security was to be furnished to Chief Engineer, DPD, CEA, Sewa Bhavan, and New Delhi-110066. Report on Physical Security, other Mock Drills for CMP, Mock Drill for Black Start Restoration was to be furnished Chief Engineer, DMLF, CEA, Sewa Bhavan, New Delhi-110066. A copy of the reports was to be sent to SRPC Secretariat ([email protected] & [email protected]). APTRANSCO, TANTRANSCO, TANGEDCO, KSEB, NPCIL, KPCL, NTECL, NLC, SRLDC, KPTCL, TSTRANSCO & TGGENCO had submitted the CISO Nominations. Others are requested to furnish the same.

Status to be submitted for the following:

State BSRP reports for Jan-June 2016

BSRP schedule for Jul – Dec 2016

Point to point mock exercise report being furnished

Updated list of Nodal Officer

Workshop Schedule

AP

TS

KAR

KER

TN

Pudu



10.2 Islanding Scheme: Priority for Railways in the matter of Restoration of Supply.

KPTCL: to expedite on the actionable points of KPTCL/BMRCL which were finalized in the special meeting. KPTCL had informed that hotline to SLDC was pending.

KSEBL: KSEBL vide letter dated 06.06.2016 had furnished the Operating Procedure for extending supply of power to Kochi-METRO.

TANTRANSCO/Southern Railway: The follow up of actionable points finalized in the special meeting in respect of Chennai Metro may be expedited by like redundancy at 220 KV level and commissioning of one more substation etc.

TSTRANSCO: was requested to take proactive action in respect of Hyderabad.

10.3 The following is the tentative dates for BSRP/MVAR capability testing:

STATE ISGS STATION DATE

Karnataka UPCL Sep’16

AP & Telangana Simhadri NTPC Oct’16

Kerala Kayamkulam, NTPC End of Sep’16

Tamil Nadu and Puducherry

NLC/NTECL Nov’16

Feedback on the above proposed dates for BSRP workshops 2016 from Utilities. (Item No.9 of enclosed SRLDC letter dated 29.08.2016)

10.4 Planning of Black Start Mock drill of Nuclear Power Plants

In the special meeting held on 19.05.2016, it was agreed that the Black Start Restoration Procedure Mock Exercise for Nuclear Power Plants would be co-ordinate on the days of Bus Shutdown / maintenance program. The station will take care of necessary resources required for such Mock Exercise and co-ordinate effectively. In this regard, it was agreed to have a plant level meeting with SRLDC and develop an internal procedure for detailing sequence of operations required at plant level in a similar manner as done for NTPC, Ramagundam etc.

10.5 Emergency Preparedness for restoration of Remotely Controlled Sub Stations In the earlier OCC Meetings the following was noted:

SRLDC had suggested that the exercise can be carried out during night period and requested that coordinators information should be furnished in advance. It was suggested that RTAMC being a coordinating agency for PGCIL substations can be called during the mock exercises at any time.

11 RGMO/FGMO: 11.1 Status Review of RGMO / FGMO implementation and performance in SR.

In earlier OCC Meetings, the following had been noted:

In case RGMO is taken out of service for any reason, generating station must intimate

SRLDC with the reasons.

SRLDC/SRPC had pointed out that all SLDCs were to ensure that all the new units have

RGMO, communication links, Main & Standby data channel and SCADA facility in place

before declaration of COD.

SRLDC had expressed concern regarding the RGMO response of the generators in the

region which was in the range of only about 20-40 % of the expected relief of the capacity on

bars.

SLDCs were requested to analyze the RGMO instances posted by SRLDC for the

generators in their control area and take up action as per 84/MP/2015. Inadequate

Response to be taken up with SERC (Petition No.302/MP/2013). Action on


recommendations finalized in the Special Meetings needed to be taken by

generators/states. All generators were kindly requested to take all steps to ensure intended

RGMO/FGMO response.

As per the order in RGMO Petition No. 302/MP/2013, the units (including state embedded)

shall not be scheduled beyond their ex-bus generation corresponding to 100% of their

installed capacity.

11.2 RGMO implementation/ Extension of RGMO status point to SLDC

The following had been noted in earlier meetings w.r.t status point extension-pending:

APTRANSCO: Upper Sileru (Cable problems) & Machkund (RTU problem) stations were yet

to extend.

TSTRANSCO: Status point of Hydro units were yet to extend.

TANTRANSCO: MTPS- I and Hydro stations to be extended.

KPCL: KPCL informed that the RGMO status points would be extended for all Raichur TPS

units by September 2016. Almathy, Kadra & Gerusoppa HEP status points were made

available but yet to be configured to SLDC.KPTCL had informed that RTPS status points

were not visible. KPTCL and KPCL were requested to ensure in this regard.

UPCL: Cable had been laid upto switch yard and the status points would be extended within

a week.

JSWEL: Yet to be extended to Kar SLDC

11.3 Implementation of RGMO by TPCIL & CEPL as per IEGC provisions. 11.4 UPCL vide their E-mail dated 30.08.2016 had informed that the status signal has been extended

to SLDC Karnataka and same has been verified for the values being shown at SLDC. 11.5 It was requested by SRLDC that the RGMO Status of State Generating Stations (consolidated

table) may be made available to SRLDC through ICCP. JSW & UPCL pending. SDSTPS data is not updating.

(Item No.10 of enclosed SRLDC letter dated 29.08.2016) 12 Transmission Network Issues and System Operation Issues:

12.1 High loading on 400 kV Nellore PS- Nellore DC line/Separate control area for Nellore PS

complex. 12.1.1 The issue had been deliberated in the 28

th TCC/29

th SRPC Meeting held on 4

th and 5

th March

2016 and previous OCC Meetings. NLDC had observed that a number of operational issues could be resolved by declaring separate bid area and it was an easily implementable solution. With separate bid area, NLDC/SRLDC could optimize the evacuation with the available network. They would inform Hon’ble CERC regarding formation of separate bid area. Power Exchange would also be apprised accordingly. CTU was suggested to examine other options like reconfiguration of some lines, shifting of one or two lines etc. for enabling higher evacuation from the complex. It was noted that NCC Unit I was scheduled to be commissioned by May 2016 and hence process of formation of separate bid area needed to be completed at the earliest.

12.1.2 In the 123rd

OCC meeting it was noted that no further action in this regard had been informed.

(Item No.14 (e) of enclosed SRLDC letter dated 29.08.2016)

12.2 Load ability of ICTs and revisit of the associated protection settings to prevent cascaded tripping of ICTs./high loading of transmission lines

12.2.1 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 had been reported by SRLDC and had requested for urgent action to alleviate the loading of 400/220 kV ICTs. It was also requested that a long term solution of augmentation/load shifting may also be considered in view of grid security.

12.2.2 Load ability of ICTS and revisit of the associated protection settings to prevent cascade tripping of ICTs. N-1 violation of Arasur, Vemagiri, Somanahalli, Madurai, Trichy and Ramagundam ICTs.



12.3 PSS Tuning of generators:

12.3.1 3rd

meeting to review the status of PSS tuning of the generators was convened on 28th June 2016

(Tuesday) at SRPC, Bengaluru. PSS study committee had analyzed the SRT reports furnished by the generators. Minutes of the Meeting are available at SRPC website.

All the generators to follow the action plan finalized in the 3rd

PSS meeting. PSS study group had analyzed the SRT reports furnished and recommendations had been finalized.

12.4 Prolonged Outage

Status review of prolonged outage of grid elements in SR. Furnishing Realistic Action plan for revival of the prolonged outage is awaited from some of the constituents. Monthly reports are required to be submitted to Hon’ble CERC in this regard. (CERC Order on petition no 146/MP/2013). The following is noted in the 122

nd OCC Meeting:

Ramagundam STPS ICT- II: Commissioning will take another one month. Bus bar

protection panel is not available and it is planned to shift it from Gajwel.

N’sagar – Cuddaupah FSC I at Cuddapah: Revived on 27.07.2016

Chittor ICT1: Survey report is submitted by field officer and the same was put up to

higher level.

Hoody ICT: ICT is under transit and will reach the site after 35 days. Commissioning will

take another 2 months.

TANTRANSCO vide letter dated 26.08.2016 has furnished the reasons for prolonged outages

for ETPS Unit-V& TTPS Unit III and action plan for revival of Unit II and III of TTPS and Unit IV

of MTPS Unit-1 of TANGEDCO stations. (Annexure-12A)


12.5 Review of operation of Inter Regional & Intra Regional Line/Non commissioning of Auto enclosure

SI No Element Status

1 Ambewadi – Ponda A/R had been commissioned but was to be put in service

2 Ambewadi-Xeldam To be commissioned

3 Kaiga - Guttur, KPTCL was ready to enable the A/R at Guttur end and once Kaiga agrees, they would enable the A/R.

4 Nagjheri lines KPTCL would enable the A/R once KPCL is ready. KPCL informed that retrofitting works were going on

5 KKNPP-Madurai lines

Dropped

6 MAPS lines In 121st CC Meeting, MAPS representative had

informed that A/R would be implemented by July 2016 for MAPS evacuation lines 3 & 4. The A/R on other two lines would be completed after receiving CTs from TANTRANSCO.

7 BHAVINI Lines In the Special Meeting held on 19.05.2016,

BHAVINI had agreed to consider and implement

the A/R scheme (could be time differentiated A/R).

Necessary approval would be taken from their

engineering/corporate. BHAVINI was suggested to

implement the A/R scheme by June 2016.

(Item No. 11(c) & (d) of enclosed SRLDC letter dated 29.08.2016)


12.6 Status update of commissioning of 400/220 kV ICT at Kudgi, NTPC In the 122

nd OCC Meeting NTPC had informed that ICT at Kudgi SS, NTPC would be

commissioned by August 2016.

12.7 Status of ICTs at Hoody It is informed that ICT II B-phase failed on 18.04.2016 has reached site and erection works are going on. For ICT II R-phase failed on 02.06.2016 tenders are quoted.

12.8 Reconciliation of Schedule within the same shift by Regional Entity. (Item No.14 (c) of enclosed SRLDC letter dated 29.08.2016.)

12.9 SEM discrepancies observed during August 2016 (Item No.14 (g) of enclosed SRLDC letter dated 29.08.2016.)

12.10 Status review of actions taken by SEPL/MEPL in respect of Hon’ble Commission Order in I.A. Nos. 34/2015 and 5/2016 in Petiton No. 205/MP/2011

(Item No.14 (b) of enclosed SRLDC letter dated 29.08.2016.) 12.11 Alternate Auxiliary Supply arrangement for Bhadravathi back to back HVDC station in view of

shifting of 315 MVA ICT. . (Item No.14 (a) of enclosed SRLDC letter dated 29.08.2016.)

12.12 Upcoming Generating Stations:

Central Sector:

Station Unit IC in MW Schedule Remarks

NTPC

Kudgi TPS Stage-I I,I, III 3x800= 2400

Unit-I :Syn. by Oct.’16 & CoD by Mar’2017 Unit-II : Syn. by Mar’17 & CoD by Sep’17 Unit-III : Syn. by Jun’17 & CoD by Dec’17

NPCIL

KKNPP Stage-I II 1000 Unit-II: Synchronization by July’16 . FL by October 2016

BHAVINI

Kalpakkam (PFBR) I 500 Synchronization by March-2017

State Sector/IPPs

Station Location Owner IC in MW SCH/Remarks

Rayalaseema TPS ST-IV

AP State 600 COD by Dec 2016

Meenakshi PH-II AP IPP 700 2016-17 Untied : 640 MW

East Coast Energy

AP IPP 1320 2015-16 AP : 300 MW

Thermal Powertech Unit-III

AP AP

IPP IPP

1320 660

Unit-III : 2016-17

SGPL, Krishnapattnam

AP IPP 1320 Unit I: COD by 2016-17 Unit II: Synchronization 2016-17 AP: 500 MW (Firmed up PPA to be signed)

LANCO Kondappalli(Stage I& II)

AP MPP 2x317 Unit 3A: Achieved full load on 07.08.2015 Unit 3B: Achieved full load on 05.09.2015

GMR Rajahmundry Energy Limited Stage II (GREL)

AP IPP 2x384 U1: Achieved Full Load on 12.09.2015

Hinduja NPCL, Vizag

AP IPP 1040 COD of Unit 1: 11.01.2016. Unit II : 1

st Synchronized on 31.03.2016


12.13 ATS for Yeramarus TPS, BTPS Unit III, Hinduja and CEPL Unit II

(Item No.13 (c) of enclosed SRLDC letter dated 29.08.2016) 13 Constituents/Generators are also requested to furnish the following Data/Information:

a. Minimum/Maximum Demand Ratio of Constituent States. Information and measures adopted may please be shared.

b. Forced/Planned outages of thermal units. c. Status of Srisailam/Kadamparai pumps mode operation. d. Installed Capacity in MW as on 31.08.2016 and additions to Installed Capacity in August

2016. e. Submission of details of new elements to be provided on monthly basis in the agreed format

by all the Regional Entities. (Item No. 12 of enclosed SRLDC letter dated 29.08.2016).

f. Load Shedding in MW & MU carried out during August 2016 on daily/hourly basis. g. Capacity in MW of Wind Mills/Renewable (Category wise) added in August 2016 by State

Sector and Private Sector - to be furnished separately. h. Generation in MU of Wind Mills/Renewable (Category wise) August 2016 by State Sector and

Private Sector - to be furnished separately. i. PLF & PAF of Thermal & Nuclear Power Stations. j. Details of Energy Exchanges by the states (including embedded IPPs/CPPs) through Power

Exchanges. k. Constituents may apprise the OCC of surplus power available, if any. l. Progress of works of generating units to be commissioned in 2016-17 and also coming up in

future. m. Details of Power Cuts on Industries, Load Shedding and Power supply to Agriculture Sector

may please be furnished in the Proforma prescribed by CEA vide their letter No. 1/AI/COR/GM-2004/3405 dated 23.11.2004.

n. Coal Stock Position to be submitted on monthly basis by Generators (States/ISGS). o. Uploading of hourly Load Shedding details (both scheduled and unscheduled) effected in

previous day by all the constituents in SR.

p. Loss of generation due to coal shortage/technical problem needs to be furnished for onward transmission to NLDC by 1000 hrs on daily basis.

q. Collection of data regarding Power Supply to Rural Areas

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 regard in the required format may please be arranged to be communicated to SRPC Secretariat at the following E-mail addresses:

[email protected] [email protected] Data to be communicated by first week of the month for previous month.

: COD from 00:00 hours of 03.07.2016 Letter in this regard from AP is at Annexure- 12B

Bellary TPS U-3 KAR State 700 Achieved full load on 01.03.2016. COD by June 2016

Yeramarus TPS KAR State 1600 Unit-I: FL achieved on 29.03.2016. Unit II: COD by June 2016.

IL & FS Unit-II TN IPP 600 First Synchronized on 13.04.2016. COD from 30.04.2016

Kakatiya TPP

St-II

TS State 600 COD on 24.03.2016. Confirmation was yet

to be received from Commercial wing.

Singareni TS IPP 1200 Unit I: CoD by June 2016.

Unit II: CoD by August 2016.



r. Reporting the Status of implementation of the recommendations of the Enquiry Committee

Status as on last day of the month to be forwarded by 3rd

day of the following month, and

that as on 15th of the month to be forwarded by 17

th of the month All the constituents were

requested to furnish timely status updates

s. Energy Generation data Management from Renewable Energy Sources Monthly generation data in respect of Renewable Energy Sources was to be submitted to

CEA with a copy to SRPC.

t. Preparation for meeting the revised environment norms as per Environment (Protection) Amendment Rules,2015 CEA vide letter dated 18.01.2016 had requested to furnish the details of preparedness and action plan in order to comply the revised water consumption and emission norms by the existing and new thermal units (to be installed from 01.012017 onwards) as per Environment (Protection) Amendment Rules, 2015 notified by Ministry of Environment, Forest & Climate Change (MOEF & CC) (Gazette Notification dated 07.12.2015). Vide letter dated 20.01.2016 SRPC had communicated to all concerned in this regard. The information may be furnished through e-mail & letter at [email protected]& Chief Engineer (TPE & CC), CEA, Room No.902 (S), Sewa Bhawan, R.R.Puram, New Delhi – 110066 and a copy of the same may also be forwarded to [email protected]/ [email protected].

14 Any other point with the permission of the Chair.

15 Date and Venue of the next Meeting.



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