List of OCC Members
Fax No. 1. Chief Engineer (L D), GETCO, Gotri 0265-2352019 2. Chief Engineer (Generation), GSECL, Vadodara 0265-2344734/2338847 3. Superintendent Engineer (CP & SS), GETCO, Vadodara 0265-2337918, 2338164 4. Chief Engineer (L D), MPPTCL, Jabalpur 0761-2664343 5. Chief Engineer (O&M:Gen), MPPGCL, Jabalpur 0761-2664572/2668050 6. Chief Engineer (L D), MSETCL, Kalwa 022–27601769 7. Chief Engineer (PP), MSEDCL, Mumbai 8. Chief Engineer (Works),MSPGCL, Mumbai 022-26473896 9. Superintending Engineer (LD), MSETCL Ambazari 07104-220275 10. Chief Engineer (L D), CSPTCL /Raipur 0771-2574174 11. Chief Engineer (O&M:GEN), CSPGCL, Raipur 0771-2574425 12. Executive Director, PGCIL Raipur 13. General Manager, POSOCO, Mumbai 022-28202630 14. General Manager (WRTS-I), Powergrid, Nagpur 0712-2641366 15. General Manager (O & M),WRTS-II, PGCIL,Vadodara 0265-2487542 16. Chief Engineer (Transmission), NPCIL, Mumbai 25580741/25563350 17. Station Director, TAPS, Tarapur 1 & 2 02525-282125/244125 18. Station Director, TAPS, Tarapur 3 & 4 02525-244021/244169 19. Station Director, KAPP, Kakrapar 02626-231231 20. General Manager (OS), NTPC, Mumbai 022-28216692 21. General Manager, NTPC, Korba 07759- 237462/237552 22. General Manager (OS), NTPC, HQ-II Raipur 0771-2544550 23. General Manager, NTPC, Vindhyachal, M.P. 07805 –247711 24. General Manager, NTPC, SIPAT, CG 07752-246504 25. General Manager NTPC LARA 26. General Manager NTPC Solapur 27. General Manager, NTPC, Kawas, Surat 0261-2860290 28. General Manager, NTPC, Gandhar 02642-287402 29. General Manager, NTPC, Mouda 07115-281221/281219 30. CLD TPC, Mumbai 022-25541908/67175385 31. Head (O), Dahanu TPS, Dahanu 02528-222039 32. Sr V P Reliance Transmission, Pune 0124-3917982/020- 30471555 33. Vice President (Generation), Torrent Power Ltd, Ahmedabad 079-27506679 34. Executive Director, Sugen CCPP, Torrent Power Ltd, Surat. 02621-661151 35. Vice President (O &M), APL Mundra , Gujarat 02838-266364 36. Head Operation CGPL Mundra 37. Vice President (Opn), Jindal Power Ltd.,Raigarh 07767-281993/281995 38. AGM(OS) NSPCL Delhi 011-26717363,26717366 39. GENERAL MANAGER ( POWER), RGPPL, Ratnagiri 02359-241071/ 241011 40. Member (Power), NCA, Indore 0731-2559888 41. Chief Engineer (PM & C), NHDC, Bhopal 0755 4030188/4030130 42. E. E. Elect. (Ponda), Goa 0832-2313780 43. Executive Engineer DD (UT), Daman 0260-/2230771/2250889/2230550 44. Executive Engineer DNH (UT), Silvassa 0260-2642338 45. Secretary, CERC, New Delhi 011-24360010/23753923 46. CEO, JSW Energy ltd. 011-46032343/26183546 47. VP-Power Infra-Essar Hazira Surat 0261-6688498/022-67082198 48. Chief Electrical Distribution Engineer CR 022-22621060 49. Vice President EPTCL Hazira Surat 0261-6682747 50. COO, Korba West Power Co. Ltd. Raigarh 51. VP(COMML) Essar Power MP Ltd MP 52. GM Torrent power grid ltd. Ahmedabad, Gujarat 53. Adani Power Maharashtra Ltd Tiroda 54. CGM, R K M Powergen Pvt Ltd 55. ED, Athena Chattishgarh Power Ltd. 56. Head(O&M) Dhariwal Infra Ltd C’pur 57. Head Operation Jaypee Nigrie STPP Singrauli. 58. VP(O&M), GCEL, Chhattishgarh 59. Head Operation DB Power, Chhattishgarh. 60. Head operation Hindustan Power, Anuppur MP 61. Head operation GMR, Warora Energy ltd. 62. Head O&M, Sterlite Grid Ltd Bhopal 63. Head Operation Balco, Chhattishgarh. 64. Head(O& M), SKS, SPGCL, Raigarh Timeline for discussion of Agenda items
Sr Agenda items/description of discussion Tentative No. Time duration Meeting to be started at 09:00 hrs 1 Transmission element outage planning 2 Proposed planned maintenance programme of generating units. 3 Anticipated power supply position for the months – January& February 2019 4 Status of completion of ongoing schemes in WR during 2018-19 Discussion on Regular Agenda items 11:00 Hrs onwards 1 Opening remark by Member Secretary 2 Introduction of participants 3 Confirmation of minutes 4 Review of System Operation during the month of December, 2018 5 Presentation on operational aspects by SLDCs, RLDC & Expert talk. 6 Operational Statistics for the month December, 2018 7 System disturbances in western region 8 Healthiness status of SERs/DRs OCC ISSUES 9 Quarterly review of Crisis Management Plan (CMP) and Physical & Cyber Security (P&CS) in power sector(Follow-up) 10 Monitoring of Schemes funded from PSDF(Follow- up) 11 State-wise details for Installation of capacitors to be furnished to WRPC(Follow-up) 12 Cyber security related works /activities being carried out in Western Region 13 Operation of Hydro power projects in peaking mode. 14 Compliance of new Environmental norms by WR Generators. 15 Outage availed for commissioning of Backup impedance relay for Backup protection of Transformers to be considered under deemed available category in calculation of monthly availability of transmission system 16 Controlling of existing 400 kV Bus Reactor by
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STATCOM controller
17 Booking of tripping of Switchable 765kV line reactor, during auto reclosing of overcompensated line, to POWERGRID account 18 Change in Operation related provisions in draft of CERC (Terms and Conditions of Tariff) Regulations, 2019 for the tariff period from 1.4.2019 to 31.3.2024. WRPC Secretariat Suo- motu agenda 19 Geospatial energy map of India 20 Expediting construction of 132 KV supply for railway traction sub-station for railway electrification projects in various states
WRLDC ITEMS 21 Low Frequency Operation during morning peak hours 22 Requirement of power flow and dynamics data for modeling renewable energy generation in Indian grid 23 Coordination with Adani Transmission System 24 Telemetry issues 25 Regional Communication Meeting under CERC Communication Regulation 2017 26 Voltage Regulation in Western Region 27 Updation of “Reactive Power Resources in Western Region-2019” 28 Black Start mock drill Exercise in Western Region 29 Data submission for Grid events occurred in Western region on December 2018 30 Date and venue of next OCC meeting
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Western Regional Power Committee Mumbai
Title: Agenda Notes Meeting no.: 515 Meeting name: Operation & Coordination sub-Committee Date & venue: 18thJanuary, 2019 at WRPC, Mumbai.
Item No. 1: Confirmation of the Minutes Minutes of 514thmeeting of Operation & Coordination Sub-Committee (OCC) of WRPC held on 12thDecember, 2018 at WRPC Mumbai, were issued vide letter No. WRPC/OPN/OCC-Minutes/2018-19/13688 dated 21.12.2018. No Comments have been received. Sub-Committee may discuss and confirm the Minutes.
Item No. 2: Review of System Operation during the month of December, 2018. 2.1 A. Frequency Particulars The frequency profile was as under: Particulars Frequency Date Time Maximum 50.25 Hz 02ndDecember, 2018 06:01:40hrs instantaneous Minimum 49.67 Hz 16thDecember , 2018 09:17:30 hrs instantaneous Average 49.97 Hz
01st – 31st 01st – 01st – 31st Range October,2018 30thNovember,2018 December,2018 (% time) (% time) (% time) IEGC band (49.9 < f < 79.20 79.87 77.03 50.05 Hz) < 49.9 Hz 12.05 10.92 12.68 > 50.05 Hz 8.75 9.21 10.29 The frequency particulars are enclosed at Annex-2.1. The Sub-Committee may kindly note.
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2.1 B. State-wise Power Scenarios of the Region & Power Supply Position report System operation during the month of December 2018 was satisfactory. The regional demand (Ex-bus) was 53402MW. The corresponding peak shortfall was in the range of 216.84 MW (peak deficit of 0.41%). The energy requirement during the said period was 32732.04 MUs (Ex-bus).
The power supply position for the month of December 2018 was as follows: Peak Demand Availability/Unrestricted Requirement (Ex-Bus) In (MW)
GUJ MP CG MAH GOA DD DNH ESIL WR
REQUIREMENT 14304 13169 3432 21151 513 328 805 899 53402
AVAILABILITY 14272 13169 3419 21089 512 328 803 898 53185
SHORTFALL 32.23 0.00 12.69 61.60 0.90 0.23 1.69 0.94 216.84
% SHORTFALL 0.23 0.00 0.37 0.29 0.17 0.07 0.21 0.10 0.41
Energy Availability/ Requirement etc.(Ex-Bus) in (MUs)
GUJ MP CG MAH GOA DD DNH ESIL WR
Net Actual Energy Supplied 9464 7497 2001 12521 390 211 405 231 32727
Unrestricted Requirement 9465 7497 2004 12523 391 211 405 231 32732
SHORTFALL in MU 32.23 0.00 12.69 61.60 0.90 0.23 1.69 0.94 216.84
% SHORTFALL 0.007 0.000 0.123 0.009 0.175 0.002 0.008 0.000 0.015
Further it is requested all the utilities to furnish the monthly data e.g. unit wise generation of hydro and thermal generating unit, unit wise /station wise auxiliary consumption of hydro and thermal generating unit, station-wise /state-wise generation of Solar/Wind/ Biomass, State-wise ISTS drawl etc. in new format attached at Annexure -2.1A. 2.2 Inter-Regional Exchanges There was a net inter-regional export of 5863 MUs from WR to other regions against net export schedule of 5589MUs. The Sub-Committee may kindly note.
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2.3 Voltage Profile Voltage profile at some of 765/400 kV sub-stations furnished by WRLDC is enclosed at Annex-2.3. The Sub-Committee may kindly note.
2.4 U/F Relay Operations As per WRLDC records the system frequency didn’t reach 49.2 Hz and no UFR operation was reported to WRLDC. The Sub-Committee may kindly note.
2.5 Power Cuts / Load Restrictions Details of Power Cuts and Regulatory measures as furnished by the State utilities are given in Annex. 2.5. The Sub-Committee may kindly note.
2.6 Details of Generating Units under Forced Outages Details of generating units under forced outages are given in Annex-2.6. The Sub-Committee may kindly note.
2.7 Details of Generating Units under Planned Outages. The details of generating units under Planned Outages are given in Annex-2.7. The Sub-Committee may kindly note.
2.8 Presentation on operational aspects by SLDCs & RLDC. All SLDC’s/RLDC, NTPC & PGCIL may kindly submit the presentation on operational aspects during last month and specific issues which need deliberations may be highlighted separately.
2.9 List of New Grid Elements added / list of elements decommissioned. The list of New Elements added in WR Grid is attached at Annexure-2.9. The Sub-Committee may like to note the same. 2.10 Submission of failure analysis of grid elements Under regulation 27 of CEA (Grid Standards) Regulations, 2010, failure analysis of equipment failure and tower collapse is to submitted to RPC and Authority. All the constituents are requested to report incidences of equipment failure and tower collapse to RPC and Authority as and when such incidences take place.
The Sub-Committee may like to note.
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2.11 Coal stock position In prevailing situation of scarcity of coal in the region, it is important to monitor the coal stocks on monthly basis in OCC forum so that deviation of load and generation can be kept minimum. To sensitize the issue of, latest CEA coal stock position is attached at Annexure-2.11. All constituents are requested to apprise the forum the efforts taken to improve the coal stock position. The Sub-Committee may like to discuss.
Item No. 3: Operational Planning 3.1 Proposed planned maintenance programme of generating units. The maintenance programme of generating units for the months January 2019 & February 2019 is given in Annex 3.1. The Sub-Committee may kindly discuss and finalise the outage schedule of generating units for the above period.
3.2 Outage programme of transmission lines/elements. List of proposals for transmission elements outage to be availed during the months of February 2019 is given in Annex 3.2.
The Sub-Committee may kindly discuss and finalise the outages of the transmission elements.
3.3 Anticipated power supply position for the months. Details of anticipated restricted & un-restricted demands for the months of January & February 2019 are given in Annex 3.3.
The Sub-Committee may like to note/update. Item No. 4: Operational Statistics for the month December, 2018.
The details of actual generation, demand, drawl of power from grid; exchanges etc. are given in the following Annexure: Annex 4.1 - Actual Generation and Requirement. Annex 4.2 - Peak Demand. Annex 4.3- Integrated Operation of the System and Operation of Inter State Tie lines. Annex 4.7– Details of level of Major Reservoirs in Western Region. The Sub-Committee may kindly note.
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Item No. 5: System disturbances in western region. There was no major grid disturbance in the Western Region during the month of December,2018. The details of minor incidences during the month received from WRLDC are enclosed at Annexure-5.
Item No. 6: Healthiness status of SERs/DRs. The status of healthiness of SERs/DRs is given at Annexure-6. All the Constituents are requested to update the status of healthiness of their SERs/DRs before the meeting. The Sub-Committee may like to note
Item No. 7: Status of completion of ongoing schemes in WR during 2018-19. 7.1 Status of Reactors. 7.2 Status of Transmission schemes: 765/400 kV and above 7.3 Status of Generating Units Details of these items are at Annexure-7. The WR utilities may intimate the current status on above.
Item no. 8: Miscellaneous Operational Items
8.1: Quarterly review of Crisis Management Plan (CMP) and Physical & Cyber Security (P&CS) in power sector All constituents are requested to submit current status of CMP and P&CS report (constituent wise) for the third quarter (October to December 2018) as per format enclosed at Annexure-8.1. All constituents are requested to submit the Status Report.
8.2: Monitoring of Schemes funded from PSDF As per the decision taken in NPC meetings, RPC may follow up with the utilities regularly in OCC to expedite the completion of various approved schemes by giving due priority. Accordingly, WRPC has been taking up this issue in OCC forum for discussion. In this matter, the details related to State-wise sanctioned grant and disbursement amount for the approved schemes to be funded from PSDF is attached at Annexure-8.2A. Also, as per the procedure, the utilities are required to furnish the information in the prescribed format by first week of every month on regular basis to Member Convener, PSDF project monitoring group (AGM, NLDC, POSOCO) with a copy to NPC & WRPC . A copy of prescribed format is attached at Annexure–8.2B.
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The utilities may update the current status of progress of scheme under PSDF.
8.3 State-wise details for Installation of capacitors to be furnished to WRPC In accordance with provision in clause 1.5 (ii) of IEGC, “RPC shall file monthly report on installation of capacitors by states vis-a-vis the requirement/targets, as decided in the RPC”
SLDC’s /DISCOMs are therefore requested to expedite the matter and ensure to furnish the status of capacitor report in format attached at Annexure 8.3 on monthly basis regularly. SLDC’s are also requested to compile the details of various utilities and send the compiled report of entire state by 8th day of every month.
The Sub-Committee may like to discuss the same.
8.4 Cyber security related works /activities being carried out in Western Region. CE(IT), CEA, New Delhi vide letter dated 31.08.2018 informed that Secretary (Power) is going to review the cyber security related works /activities being carried out in Power Sector shortly. In this regard, it is requested to provide the utilities/ State-wise status on following action points pertaining to cyber security:
1. Appointment of organization-wise Chief Information Security Officers and its status. 2. Identification of organization-wise Critical Infrastructure and its status. 3. Preparation of organization-wise Crisis Management Plan and its status. 4. Status of Cyber Security Mock Drill activity in coordination with CERT-In. 5. Status of Training / Workshops on Cyber Security organized / participated by power sector entities. 6. Status of action taken on CERT-In / NCIIPC advisories.
The agenda point had also discussed in the 512th OCC meeting wherein all the utilities had been requested to furnish the detail information related to above action points. However, all the utilities have not so far furnished the requisite details. The mane of utilities who has furnished the information and who are yet to furnish the information is listed in the following table A and table B respectively:
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A. Data/information received (): Sr Name of Utilities Sr Name of Utilities No No
1 Chhattishgarh 8 KSK Mahanadi 2 Madhya Pradesh 9 MB Power(Hindustan Power) 3 NTPC 11 RKM Power 4 TATA Power 12 WRTS-II, PGCIL Vadodara 5 WRLDC 13 Gujarat 6 NHDC 14 SKS Energy 7 WRTS-I PGCIL, Nagpur 15 Db power
B. Data/information Awaited (): SN Utilities Reason for non- submission 1 NPCIL 2 DTPS Dahanu 3 APML 4 NCA 5 DD 6 DNH 7 GOA 8 JPL 9 JNSTPS 10 APL 11 Sasan Power 12 Jhabua Power 13 Lanco Power 14 TRN Energy 15 ACBIL Energy 16 CGPL 17 Essar Mahan 18 GMR Chhattishgarh
All utilities listed in Table- B are requested to submit the point-wise information during the meeting. Sub-Committee may discuss /note the same.
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8.5 Operation of Hydro power projects in peaking mode Background: A sub-committee has been constituted under chairperson, CEA with heads of POSOCO, NHPC, SJVN & THDC as members and Director (H), MoP as Member convenor. In the meeting of the sub-committee, it was concluded that there is scope of 2000 MW additional power generation from hydro stations during peak hours.
In order to sensitize about the benefits of peaking mode of operation of hydro stations, the matter had been discussed during 497th, 499th OCC meeting as well. Also, a committee of FOLD members had been constituted to study the pattern of generation from hydro stations in India and suggest measures to exploit the available capabilities of hydro units while honoring the existing hydrological constraints.
During the 497th OCC, WRPC suggested all respective constituents to find the scope of complete utilisation of hydro power and discuss the practical issues in monthly OCC meetings.
The matter was further discussed during 499th OCC meeting held on 20.09.2018, wherein shifting of hydro power projects from base load operation mode to peaking mode was discussed. and SLDC’s were advised to utilize the available water judiciously and schedule hydro stations for peaking
Further the following recommendations of Sub- Committee (under Chairperson CEA), shall be taken as a regular agenda item in monthly OCC.
“The status of peaking support provided by the hydropower stations, constraints if any for inability to provide support for peaking may be included as a standing agenda item in all future monthly Operation Co- ordination Committee (OCC) Meetings. Objective of this agenda item would be to maximize peaking availability by optimizing period of shut down of hydro units, monitoring of shut downs / outage of the units and follow- up to expedite revival thereof.”
In view of above SLDCs may apprise OCC:
The present status of hydro reserves in respective states Constraints if any for providing peaking support from hydro stations Actions being taken to maximize peaking availability from hydro Stations
The Sub-Committee may like to discuss.
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8.6 Compliance of new Environmental norms by WR Generators. Background: Chief Engineer, TPRM Div, CEA, New Delhi vide letter no. 2/16/VIP/TPRM/2016/CEA/ 82-108 dated 01.02.2018 and subsequently WRPC letter dated 12.02.2018 requested for the status of progress of works of FGD installation and ESP up-gradation to meet the emission level as per new environmental norms (SOx, NOx and SPM).
Subsequently, the issue was deliberated during 505th OCC meeting it was decided to monitor the installation of FGD covering the details as given in Annexure-8.6A.
Discussions in the 513th OCC and new updates:
NTPC representative informed that NIT has already been invited for 27690 MW across all regions and NIT for additional 3000 MW is expected to be invited by November 2018. Further he informed that NTPC shall adhere to the time lines as per MoEF for FGD.
Maharashtra representative informed that the process of technical bid and financial bid has been completed for koradi unit no 10 (660 MW).
All concerned generators are requested to provide the update in status for installation of FGD & ESP as per the timelines given by Central Pollution Control Board which is at Annexure 8.6B (http://cpcb.nic.in/uploads/direction/Direction_tpp_Combined_12.06.2018.pdf).
The Sub-Committee may like to discuss/note.
8.7 Outage availed for commissioning of Backup impedance relay for Backup protection of Transformers to be considered under deemed available category in calculation of monthly availability of transmission system. GM, WRTS-II, PGCIL vide his email dated 07.01.2019 requested to consider the Outages availed for commissioning of Backup impedance relay for Backup protection of Transformers under deemed available category in calculation of monthly availability of transmission system. The details are as follow:
“As per report of the 'Task force on POWER system analysis under contingencies' constituted by Ministry of Power, Zone-3, timing is to be coordinated with the backup protection of transformer and accordingly backup impedance protection for transformer may be applied. (Appendix 9.1)
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Accordingly POWERGRID is commissioning backup impedance relay as the backup protection of transformer.
POWERGRID therefore requested OCC that outages of ICT's for commissioning of backup impedance relay may please be considered under deemed available category as work is being taken up for system improvement measure.”
The Sub-Committee may like to discuss
8.8 Controlling of existing 400 kV Bus Reactor by STATCOM controller GM, WRTS-II, PGCIL vide his email dated 07.01.2019 informed the following that at present 400kV Bus reactor are not controlled by STACOM controller and are being switched on and off manually for voltage regulation as per code from WRLDC. As per existing scheme of STATCOM , 400kV Bus reactors are to be switched on and off by STACOM controller as per voltage settings of STATCOM controller. The feature is to be commissioned by taking outage of bus reactors at Aurangabad / Solapur for completing the project scope. POWERGRID is requesting to regulate switching of 400kV Bus Reactor through STATCOM controller.
The Sub-Committee may like to discuss.
8.9 Booking of tripping of Switchable 765kV line reactor, during auto reclosing of overcompensated line, to POWERGRID account.
GM, WRTS-II, PGCIL vide his email dated 07.01.2019 informed that SLR is tripped during auto reclose of line as per protection scheme implemented to avoid Ferro-resonance phenomenon. However, the outage duration is booked to POWERGRID account.
The Sub-Committee may like to discuss
8.10 Change in Operation related provisions in draft of CERC (Terms and Conditions of Tariff) Regulations, 2019 for the tariff period from 1.4.2019 to 31.3.2024. WRPC Secretariat Suo-motu agenda :
The CERC has issued a draft of (Terms and Conditions of Tariff) Regulations, 2019 for the tariff period from 1.4.2019 to 31.3.2024 and invited comments/suggestions/objections from the stakeholders and interested persons on the provisions of above draft Regulation. In the above context, all the participants are requested to furnish comments/suggestions/objections (3 hard copies + soft copy) to the Secretary,
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Central Electricity Regulatory Commission, 3rd & 4th Floor, Chanderlok Building, 36, Janpath, New Delhi -110 001 on or before 15th January, 2019 or mail to [email protected]. Also, it is brought to the notice of all participant that the substantial changes have been made in draft tariff regulation 2019-24 vis-à-vis tariff regulation 2014-19 with regard to operation aspects. The changes are as follow:
(a) Procedure for Calculation of Transmission System Availability Factor for a Month Sr. Tariff Regulation Draft Tariff Details of provision No. 2014-19 Regulation 2019-24 Weightage factor for 1. No provision Total rated MVAR STAT-COM Time frame for Certification * As per 3rd column 2. of transmission system No provision of table given below availability
As there was no provision related to time line for processing availability certification in tariff regulation 2014-19 and therefore OCC forum of WRPC formulated the same in 502nd OCC. A comparison of time line formulated by 502nd OCC vis-à-vis draft regulation 2019-24 is tabulated below : Time line formulated by 502nd OCC Time frame for certification of held in 12/12/2017 transmission system availability in draft Tariff Regulation 2019-24 1. All ISTS licensees (including PGCIL) 7. Time frame for certification of shall submit tripping details transmission system availability: /supporting documents with regard to Following schedule shall be followed for their transmission system for the certification of availability by respective period of last month on or before 7th RPC: of following month to WRPC, WRLDC Submission of outage data by and beneficiaries. Transmission Licensees to RLDC / 2. On receiving the tripping details from constituents –By 5th of the ISTS licenses, all concerned following month; beneficiaries shall furnish their Review of the outage data by comments (if any) with regard to the RLDC / constituents and forward outages claimed as deemed available the same to respective RPC – by by the ISTS licensees on or before 20th of the month; 15th of the following month to Issue of availability certificate by WRPC/WRLDC. respective RPC – by 3rd of the next 3. WRLDC shall study the tripping month. details /supporting documents and subsequently furnish their observation to ISTS licensees (including PGCIL) for clarification between 16th to 18th of the following month. 4. WRLDC shall also submit the verified data for all ISTS licensees (including PGCIL) to WRPC in hard copy & soft form (through E-mail) by 24th of the
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following month. 5. WRPC Secretariat shall examine, verify & process the case for issue of transmission availability certification taking into account provisions of regulation and comment received from the beneficiaries. Subsequently, WRPC shall issue transmission availability certificate to all transmission licensees within the period of 5 working days from 24th of the following month.
(b) 0.5% additional return if project is completed within the specified timeline. The following change has been made in draft tariff regulation 2019-24 Tariff Regulation 2014-19 Draft Tariff Regulation 2019-24 Regulation 24 (i) to (iii) These provisions is not longer a Provided that: part of regulation 30 (Return on i. in case of projects commissioned on Equity) or after 1st April, 2014, an additional return of 0.50 % shall be allowed, if such projects are completed within the timeline specified in Appendix-I: ii. the additional return of 0.5% shall not be admissible if the project is not completed within the timeline specified above for reasons whatsoever: iii. additional RoE of 0.50% may be allowed if any element of the transmission project is completed within the specified timeline and it is certified by the Regional Power Committee/National Power Committee that commissioning of the particular element will benefit the system operation in the regional/national grid:
8.11 Geospatial energy map of India Background:
Geographical Information System (GIS) based energy map for India (https://vedas.sac.gov.in/powergis_main/index.jsp) is being implemented by NITI Aayog. This would provide true locations of all energy resources including power plants and transmission lines, etc. on a map of India which would be
515th OCC Agenda Page 14 hosted on NITI Aayog’s website. CEA is a designated nodal agency for collecting power sector data and accordingly power utilities and DISCOMs were requested to submit the requisite data to CEA for onward transmission to NITI Aayog. The details required are - name, voltage level, capacity, longitude and latitude of all s/s of 33 kV and above; longitude and latitude of origin and terminating points of lines of 33 kV and above.
DISCOMs and other power utilities are requested to submit the requisite data to CEA through [email protected] email id at the earliest.
The above agenda was discussed in the 513thOCC ,DISCOMS are requested to update the status on the same.
The Sub-Committee may like to discuss.
8.12 Expediting construction of 132 KV supply for railway traction sub-station for railway electrification projects in various states Ministry of Power on the above subject dated 22.11.2018 (letter enclosed) where in it has been requested to expedite the construction of 132 kV supply for railway traction sub-station for railway electrification projects in various states.
In the above communication, Railway board has informed that Ministry of railways has accorded high priority to railway electrification projects for reducing dependence on imported petroleum-based fuel thereby enhancing energy security of nation. Further railways informed that progress of ongoing transmission line works being executed by State Electricity Boards is not matching with the targets for Railway sections planned to commissioning on electric traction.
In view of the above concern of Ministry of Railways/Railway Board Gujarat, Madhya Pradesh, Maharashtra and Chhattisgarh may update the status regarding execution of transmission lines, contract yet to be awarded and estimates as per list enclosed at Annexure-8.12.
The Sub-Committee may like to discuss
8.13 Coordination of entities for NHPTL testing of equipments. As per Hon’ble CERC order, NHPTL shall seek code from WRLDC for the opening/ closing the power window of 4 hours and further for maintaining the better coordination, NHPTL is communicating with WRLDC in real time before taking the shot and also providing the details of testing immediate after the shot.
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But the recent scenario becomes very complex, i.e informing every time before/during/after the shot to multiple persons of organization and also multiple persons of WRLDC, MPPTCL, JP Bina , MPSLDC calling to NHPTL and seeking the details of testing before/during/after every shot which is practically impossible. This type of complex coordination will lead in future to delay in testing, unwanted issues and unexpected events.
With all due respect, to avoid the complexity and also to improve the coordination between us (i.e NHPTL, WRLDC, MPPTCL, JP Bina & MPSLDC), NHPTL is proposing for nomination of one or two officials from each organization (WRLDC, MPPTCL, JP Bina & MPSLDC) and provide the details i.e Name of officials, Mobile numbers and email ids, so that NHPTL engineers will communicate with them only during testing period.
As per OCCM, NHPTL is supposed to submit tentative schedules of transformer testing by 5th of current month planned for next month. But present scenario, WRLDC is freezing the tentative schedules is the final schedule of testing, which is difficult to adhere as per site conditions and also every time NHPTL is requesting all regions connecting WR-II for deferment of outages. To avoid this NHPTL is proposing for 4days slot booking in the first & third week of every month with the tolerance of +/- 1day (according to the number of phases of transformer to be tested).
NHPTL will intimate to WRLDC 7 days in advance for utilization of above slots.
OCC sub committee may like to discuss.
8.14 SCADA issues pertaining to SLDC MP. Telemetry of 400 KV Morena (Adani) S/s & 400 KV Betul S/s is very intermittent. In case of outage of telemetry, long time is taken for its restoration (atleast 2-3 days).
The telemetered values of following elements of 765 KV Satna-PG is wrong :-
S.No. Element Telemetred Actual value at value at SLDC site
1 220 KV Satna-IC-1 MW 111 117
2. 220 KV Satna-IC-2 MW 110 119
3. 220 KV Satna-IC-3 MW 101 109
4. 220 KV Satna-IC-4 MW 60 65
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5. 400/220 KV ICT-1 MW 61 174 (Sec side)
6. 400/220 KV ICT-2 MW 166 189 (Sec Side)
The above discrepancies were intimated vide this office letter SE/LD:E&T/322 dtd.10-07-18 , SE/LD:E&T/870 dtd. 02-02-18 & SE/LD:E&T/815 dtd.11-01-18. However the discrepancies still exists & no rectification has been done despite pursuance since long time.
OCC subcommittee may like to discuss.
Item No 9. WRLDC Agenda Items 1. Low Frequency Operation during morning peak hours The grid frequency remained below IEGC band for considerable period of time during the last few days. On 4th Jan 19 the frequency remained below the band for 22% of the time recording. The trend has deteriorated further, during the morning peak demand hours and the frequency touched minimum value of 49.58 Hz. The frequency profile for last few days is as under:-
Frequency
Date <49.90 49.90- >50.05 FVI Min Freq. 50.05 (Hz)
01-Jan-19 9.98 71.11 18.31 0.0588 49.687
02-Jan-19 15.83 78.46 5.71 0.0497 49.785
03-Jan-19 22.37 62.30 15.32 0.0875 49.665
04-Jan-19 22.23 65.72 12.05 0.0852 49.576
05-Jan-19 7.05 68.45 24.50 0.0487 49.750
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06-Jan-19 4.42 67.42 28.16 0.0369 49.803
07-Jan-19 7.31 71.25 21.44 0.0400 49.732
08-Jan-19 6.50 74.31 19.19 0.0379 49.797
This continuous frequency operation below the IEGC band may be attributed to the significant over-drawl by some of the constituents especially during the morning and evening demand ramp hours. Further due to improper demand estimation and generation procurement/scheduling, significant deviation from schedule resulting in low frequency operation for a considerable period of time. The demand has shown continuously increasing trend from week end to week days (Sunday to Monday), proper demand estimation/forecasting and scheduling/procurement of generation by the constituents is of utmost importance for reliable and secure grid operation. Therefore, in view of above, following actions may kindly be taken by all WR constituents to maintain the frequency within IEGC band and ensure reliable and secure grid operation :-
A) All constituents are advised to bring back their thermal units that are out on RSD into service in order to meet the expected demand without any constraints and maintain adequate reserves. B) While scheduling of thermal generators proper attention shall be given to the ramp rates in order to achieve the desired generation during the morning and evening peak demand hours. C) Optimized hydro scheduling to accommodate the frequency variations in real-time. D) All constituents are advised to maximise their internal generation and strictly adhere to their schedule. Otherwise URS shall be booked to the overdrawing constituents proactively in the interest of reliability & security of the grid.
OCC members may like to discuss
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2. Requirement of power flow and dynamics data for modeling renewable energy generation in Indian grid Indian power system is undergoing is a systemic change towards integration of 175 GW of generation from renewable energy (RE) sources. Variability of RE generation, haul of power over large distances through EHV lines, change in pattern of loads connected to the grid, increasing share of power electronic based equipment and a reducing share of rotating mass in the electric grid are likely to pose new challenges in stable operation of power systems.
Section 6.3 and 6.4 of CEA manual on Transmission Planning criteria 2013 lays out considerations for stability studies in the planning horizon. Section 7.1 of CEA manual on Transmission Planning Criteria 2013 states that “The system shall be planned based on one or more of the following power system studies…. Stability Studies (including transient stability and voltage stability)”.
To ensure security of the interconnected power grid, it is imperative to conduct stability studies in both operational (short-term) and planning (long-term) horizons in the power grid. To gain confidence in the stability studies that adequately represent system performance, fit-for-purpose models of power system elements are of utmost importance.
Procedure issued by CTU for grant of connectivity to projects based on renewable sources to Inter-state transmission system does not specify any format for collection of modelling data. Although RE generation is being progressively added to both ISTS and Intra-STS, gap exists in terms of availability of necessary data for modelling.
Accordingly, guidelines for collection of data for modelling utility scale wind and solar generation installations in India have been prepared by POSOCO (Enclosed as Annexure-9.2.1 and Annexure-9.2.2). The same may be adopted as broad guidelines for collection of information for fit-for-purpose models for steady-state and dynamic simulations. The necessary data for modelling need to be furnished prior to interconnection with the grid.
OCC Members may like to discuss.
3. Coordination with Adani Transmission System Adani Transmission is holding ownership of 400 kV, 765 kV transmission lines and substations in western regional grid. As per regulations/operating procedure during any switching/restoration operations WRLDC issues operational codes to transmission line owner and terminating substations.
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It has been observed that Adani transmission system has no real time coordination team/control centre for coordinating with WRLDC control room. WRLDC control room is facing real time coordination issues with Adani transmission system due to lack of real time coordination team. At present coordination with Adani Transmission system is as follows. Operational codes bay outages/normalization is communicated to substations No nodal officer has been identified for line outages/normalization. For fast exchange of operational codes either for outages/normalization of lines or bays, a coordinating team/control room is necessary.
OCC members may like to discuss
4. Telemetry issues a. Maintaining reliable telemetry of all stations in context of 4th Amendment of DSM Regulations. As per amended DSM regulations effective from 1st Jan 2019, every regional entity (Constituents and Generators) is required to comply with the provisions of Clause 10 of Regulation 7. The same is reproduced below for ready reference:
“In the event of sustained deviation from schedule in one direction (positive or negative) by any regional entity (buyer or seller), such regional entity shall have to change sign of their deviation from schedule, at least once, after every 6 time blocks. To illustrate, if a regional entity has positive deviation from schedule from 07.30 hrs to 09.00hrs, sign of its deviation from schedule shall be changed in the 7th time block i.e. 09.00hrs to 09.15hrs from positive to negative or vice versa as the case may be.
Provided that violation of the requirement under this clause shall attract an additional charge of 20% on the daily base DSM payable / receivable as the case may be.”
In fact every regional entity is mandated to monitor their respective deviation from Schedule in real-time which is based on their own SCADA data and take necessary action. Therefore every regional entity is expected to ensure and maintain reliable and correct
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telemetry of their end of all interface points. Now, post 01.01.2019, the aspects of reliable and correct telemetry at user end have assumed greater significance as additional and substantial commercial implications have been stipulated under Clause 10 of Regulation 7 of the DSM Regulations mentioned above. Particularly, in case of state utilities, the drawl figure to be monitored by SLDCs for zero crossing violations must be primarily calculated using state end telemetry points. Similarly, sellers and generators shall primarily rely on their respective end telemetry data in this context. WRLDC telemetry data or CTU end telemetered data may be used as a secondary reference. However, WRLDC clarifies that any adverse DSM implication for using WRLDC/CTU end telemetered data to monitor deviation from schedule by the entities shall not be attributed to WRLDC.
Members may like to discuss.
b. Reporting of telemetry status details every month
In compliance to CERC order dated 29.01.2016 on Petition 07/SM/2014 in the matter on “Non-compliance of Commission`s direction dated 26.9.2012 in Petition No. 168/MP/2011.”, telemetry status of central sector and state sector stations in the region is to be uploaded on WRLDC website every month. Presently, WRLDC initiates request for data from respective SLDCs and has to follow-up for SLDCs to furnish the relevant monthly figures. After much persuasion, WRLDC has collected the updated list of RTUs from constituent SLDCs. With a view to improve the coordination, it is requested that henceforth, SLDCs shall submit the updated telemetry status including the list of RTUs to WRLDC latest by 3rd working day of every month and WRLDC shall compile and upload the same by 5th working day of the month. The format for the same is already available with SLDCs.
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Members may like to discuss.
c. Correct telemetered data from old NTPC stations
Old NTPC stations, viz., Kawas, Gandhar, KSTPS & VSTPS have been integrated during their respective commissioning. WRLDC has observed several discrepancies in the telemetered analog and digital (status) data from these RTUs. In view of the amended DSM Regulations and for improved reliability of EMS application at WRLDC, correct and reliable telemetered data from these stations are extremely important. The telemetry discrepancies from Kawas, Gandhar (Jhanor) and KSTPS are attached in Annexure-9.4(c) Similarly there is a lot of discrepancy in VSTPS stg. 1, 2 & 3. WRLDC regularly contacts concerned NTPC stations on such discrepancies from time to time. However, the usual response from NTPC stations is that such concerns should be taken up with PGCIL as the RTUs are maintained by PGCIL. This is not as per the stipulations of the IEGC clause 4.6.2. It is requested that rectification of telemetry concerns when intimated by WRLDC shall be taken up by NTPC (user) with PGCIL.
NTPC to discuss and update rectification status.
d. Prolonged outage of Telemetered data.
Telemetered data is utilized for various aspects of grid operation like network visualization, grid monitoring, regulatory compliance, decision making, report preparation, post event analysis and a whole gamut of offline as well as online activities associated with grid management. Naturally, outage of telemetered data adversely impacts grid management functions. With the amended DSM regulation wef 01.01.2019, the role of real time telemetry has assumed greater significance and telemetry outage of critical elements may translate to adverse financial implication on the constituents. It is therefore
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requested that users are sensitized on this aspect and restore telemetry outages on priority. Prolonged outage of telemetry has been observed in certain instances few of which are attached in Annexure-9.4 (d).
Members may like to discuss
e. Update on the status of ICCP data exchange between Backup SLDC Maharashtra and Backup WRLDC
CE, Kalwa SLDC informed that ICCP data exchange between Backup SLDC Maharashtra and Backup WRLDC will be established by Feb 2019.
Maharashtra SLDC may update current status of progress.
5. Regional Communication Meeting under CERC Communication Regulation 2017 As part of implementation of the provisions of CERC Communication Regulation 2017, a regional platform/forum for discussion on communication and associated telemetry systems deployed/planned to facilitate WR grid operation will be highly beneficial. It is therefore proposed to conduct a quarterly communication meeting by WRPC with a view to provide an open platform to the constituents to discuss and resolve communication and associated telemetry issues in WR. This will also facilitate various activities mandated in Communication Regulation 2017.
Members may like to discuss
6. Voltage Regulation in Western Region 6.1 High Voltage Nodes In the month of Dec’18, voltages were above IEGC band at 400 kV Raigarh, Dhule, Raipur, Karad, Dehgam and Kalwa etc. The Voltage Deviation Index of above nodes are tabulated below.
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% time Voltage > Station Voltage S.No than IEGC Name Deviation Index threshold Raigarh 89.82 0.90 1 Dhule 76.68 0.77 2 Raipur 64.55 0.65 3 Karad 64.53 0.65 4 Dehgam 61.26 0.61 5 Kalwa 60.21 0.60 6 Mapusa 53.83 0.54 7 Wardha 51.19 0.51 8 Magarwada 41.63 0.42 9 Kasor 37.13 0.37 10 Damoh 36.89 0.37 11 Parli 35.47 0.35 12 Boisar 34.09 0.34 13 Khandwa 24.39 0.24 14 Bhilai 22.30 0.22 15
6.2 Generators injecting MVAR into Grid The MW, MVAR and Voltage of generating units was analyzed for the month of Dec 18 with the help of SCADA data available at WRLDC. The list of generators injecting MVAR into the grid even when the bus voltage is above nominal are given below. 1. IPPs: Essar Mahan, RKM, Dhariwal, DB Power, Jhabua, TRN, JPL-I (U#3), JPL Tamnar (U#2, U#4) 2. ISGS: KSTPS (U#3, U#2), TAPS(U#3) 3. Gujarat: Wanakbori (U#4, U#5, U#6 & U#7) 4. Maharashtra: Koradi (U#8 & U#9) 5. M.P. JP Bina(U#1), Satpura (U#10 & U#11), Singhaji (U#1 & U#2)
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6.3 MVAR flows from LV to HV side
MVAR flows from LV to HV side are observed at following nodes causing further increase in voltages at 400 kV substations and above.
Maharashtra: Karad and Kolhapur
Chhattisgarh: Bhatapara and Raita
In this regard all SLDCs are advised to Take up with concerned S/S to reduce MVAR flow from LV side to HV side by switching off capacitors To switch on all B/Rs and L/Rs To absorb maximum VARs at all generating stations To explore possibility of running machines in condenser mode To take up with wind generators connected on LV side not to generate VARs OCC members may like to discuss
7. Updation of “Reactive Power Resources in Western Region-2019” Reactive Power Resources in Western Region WR Grid was updated & published on 31th December 2018. This document contains the details of the reactive power resources available for Reactive Power management in Western Regional Grid. Link is given below.
http://wrldc.org/content/364_1_ImportantDocuments.aspx
8. Black Start mock drill Exercise in Western Region Western Region has 29 generating stations with black start capability. As per the information available with WRLDC, 18 black Start stations have completed the Mock exercise in the year 2018. Dates of black start mock drills are given below.
Date of Mock Drill in Sl No Power Station State 2018 09-01-2018 & 1 CLPIPL Gujarat 09.12.2018 2 GIPCL-I Gujarat 06-02-2018 04-03-2018 & 3 Kadana Gujarat 16.12.2018 04-03-2018 & 4 Ukai (H) Gujarat 16.12.2018
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5 Kawas Gujarat 09-12-2018 Jhanor / 6 Gandhar Gujarat 09-12-2018 7 Dhuvaran Gujarat - 8 Sugen Gujarat - Mini 9 Hydro(LBC)* Gujarat - 10 SSP Gujarat - 11 Ghatghar Maharashtra 06-09-2018 12 Bhivpuri Maharashtra 09-12-2018 13 Koyna I & II Maharashtra 24-12-2018 14 Uran (Gas) Maharashtra 29-12-2018 15 Khopoli Maharashtra - 16 Bhira Maharashtra - 17 Bhira PSS Maharashtra - 18 Paithan Maharashtra - 19 Trombay Maharashtra - Madhya 20 Tons Pradesh 23-01-2018 Madhya 21 Indira Sagar Pradesh 10-02-2018 Madhya 22 Bargi Pradesh 11-04-2018 Madhya 23 Pench Pradesh 11-04-2018 Madhya 24 Gandhi Sagar Pradesh 06-07-2018 Madhya 25 Rajghat Pradesh 29-08-2018 Madhya 26 Madhikheda Pradesh 29-08-2018 Madhya 27 Birsinghpur Pradesh - Madhya 28 Omkareshwar Pradesh - 29 Hasdeo Bango Chhattisgarh 30-12-2018
As mandated by IEGC, the Black start capable units need to conduct mock black start exercises once in every 6 months. Only 3 black start stations have conducted mock drills twice in year 2018 and rest of the stations has conducted mock drill only once.
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All SLDCs are requested to furnish black start mock drill reports to WRLDC conducted so far along with availability and status of synchronizing trolleys.
OCC Members may like to deliberate
9. Data submission for Grid events occurred in Western region on December 2018
As per IEGC 5.2(r), utilities need to submit the data required to RLDC within 24 hours for all the Grid events. The list of Grid events along with the submission status of report and DR/EL is attached as Annex-9.9.
OCC Forum may like to discuss.
Item No. 10: Date and venue of next OCC meeting
The date & venue of 516th OCC meeting will be intimated later on.
The Sub- Committee may like to note as above
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Anaulagnak 2.1
idsambar 2018 maoM AavaRi%t ko AaMkD,aoM ka ivavarNa (piScama xao~ Baar p`oYaNa kond` kI AavaRi%t irpaoT- ko AaQaar pr) FREQUENCY PARTICULARS DURING DECEMBER 2018 (AS PER FREQUENCY REPORT OF WRLDC) 1. INTEGRATED OVER AN-HOUR ek GaMTo maoM samaakilat
1.1 MAXIMUM FREQUENCY 50.08 Hz. BETWEEN 0600 Hrs & 0700 Hrs on 16.12.2018 AiQaktma AavaRi%t
1.2 MINIMUM FREQUENCY 49.79 Hz. BETWEEN 0700 Hrs & 0800 Hrs Hrs. ON 21.12.2018 nyaUnatma AavaRi%t
1.3 AVERAGE FREQUENCY 49.97 Hz. AaOsat AavaRi%t 2. INSTANTANEOUS ta%kailak
on 02nd Dec at 06:01:40 hrs and on 16th Dec at 2.1 MAXIMUM FREQUENCY 50.25 06:03:20Hrs AiQaktma AavaRi%t
2.2 MINIMUM FREQUENCY 49.67 on 16th Dec at 09:17:30 hrs nyaUnatma AavaRi%t
3. %AGE OF TIME WHEN FREQUENCY WAS idsambar 2018 navambar 2018 A@tUbar 2018 AavaRi%t ka samaya p`itSat maoM
3.1 Below 49.9 Hz. 12.68 10.92 12.05 49.9 hT\ja sao kma 3.2 BETWEEN 49.9 Hz. AND 50.05 Hz. 77.03 79.87 79.20 49.9 hT\ja AaOr 50.05 hT\ja ko baIca mao 3.3 ABOVE 50.05 Hz. 10.29 9.21 8.75 50.05 hT\ja ko ऊपर 4.1 NO. OF TIMES FREQUENCY TOUCHED 49.20 Hz. 0 0 0
4.2 NO. OF TIMES FREQUENCY TOUCHED 49.00 Hz. 0 0 0
4.3 NO. OF TIMES FREQUENCY TOUCHED 48.8 Hz. 0 0 0