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 – March& April 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 February, 2019 5 Presentation on operational aspects by SLDCs, RLDC & Expert talk. 6 Operational Statistics for the month February, 2019 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 First time availability certification for transmission system.
13 Cyber security related works /activities being carried out in Western Region 14 Operation of Hydro power projects in peaking mode. 15 Compliance of new Environmental norms by WR Generators. 16 Geospatial energy map of India
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17 Consequences of implementation of 4th amendment of DSM regulation w.e.f 01.01.19 18 Automatic Under Freq. Load Shedding Scheme (AUFLS) Review of AUFLS settings Mapping of feeders 19 Details of existing transmission system (220KV and above AC & DC voltage level) in the country as on 31st December 2018.
20 Ambient Temperature adjusted TTC 21 Schedule for RIPL,amravati WRLDC ITEMS 22 Primary frequency response 23 Web Based OCC Outages Software for replacing the existing Google Sheet
24 Voltage Regulation in Western Region High voltage nodes Generators injecting MVAR into Grid
25 Preparedness for ensuring adequacy of Power Supply during Summer (April-June)
26 Extension of outages of critical elements
27 Delayed submission of First Time Charging (FTC) documents and Non-compliance of FTC procedure by MPPTCL
28 Ramp compliance of Thermal Generators as per T&C of tariff 29 Lines / ICTs opened to control overloading
30 Providing of wind turbine data of wind farms in control area of SLDCs as per direction of Hon’ble CERC. 31 Telemetry issues Monthly telemetry status as per CERC Mandate Prolonged outage of Telemetered data. Correct telemetered data from old NTPC stations Regional Communication Meeting under CERC Communication Regulation 2017 32 Date and venue of next OCC meeting *************
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Western Regional Power Committee Mumbai
Title: Agenda Notes Meeting no.: 517 Meeting name: Operation & Coordination sub-Committee Date & venue: 13rdMarch, 2019 at WRPC, Mumbai.
Item No. 1: Confirmation of the Minutes Minutes of 516thmeeting of Operation & Coordination Sub-Committee (OCC) of WRPC held on 11thFebruary, 2019 at WRPC Mumbai, were issued vide letter No. WRPC/OPN/OCC-Minutes/2018-19/2322 dated 25.02.2019. No Comments have been received. Sub-Committee may discuss and confirm the Minutes. Item No. 2: Review of System Operation during the month of February, 2019. 2.1 A. Frequency Particulars The frequency profile was as under: Particulars Frequency Date Time Maximum 50.27 Hz 27thFebruary, 2019 06:03:40 hrs instantaneous Minimum 49.68 Hz 01stFebruary, 2019 12:42:50 hrs instantaneous Average 50.00 Hz
01st – 31st 01st – 31st 01st – Range December,2018 January,2019 28thFebruary,2019 (% time) (% time) (% time)
IEGC band (49.9 < f < 77.03 70.26 70.73 50.05 Hz)
< 49.9 Hz 12.68 10.69 7.01 > 50.05 Hz 10.29 19.06 22.26 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 February 2019 was satisfactory. The regional demand (Ex-Bus) was 54536MW. The corresponding peak shortfall was in the range of 244 MW (peak deficit of 0.45%). The energy requirement during the said period was 29656 MUs (Ex-bus). The power supply position (provisional) for the month of February 2019 was as follows: Peak Demand - Availability/Unrestricted Requirement (Ex-Bus) In (MW)
GUJ MP CG MAH GOA DD DNH ESIL WR
REQUIREMENT 15409 13505 4094 21079 595 331 800 898 54536
AVAILABILITY 15409 13505 4090 21020 594 331 799 895 54292
SHORTFALL 0.00 0.00 4.29 58.86 0.21 0.46 1.12 2.19 244.00
% SHORTFALL 0.00 0.00 0.10 0.28 0.03 0.14 0.14 0.24 0.45
Energy - Availability/ Requirement etc.(Ex-Bus) in (MUs)
GUJ MP CG MAH GOA DD DNH ESIL WR
Net Actual Energy 29648 Supplied 8595 6119 2187 11378 319 199 525 325
Unrestricted 29656 Requirement 8595 6119 2195 11378 319 199 525 325
SHORTFALL in MU 0.00 0.00 7.67 0.00 0.00 0.00 0.00 0.00 7.67
% SHORTFALL 0.000 0.000 0.349 0.000 0.000 0.000 0.000 0.000 0.026
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 6260 MUs from WR to other regions against net export schedule of 6352MUs.
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The Sub-Committee may kindly note.
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 March 2019& April 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 April 2019is 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 March 2019& April 2019 are given in Annex 3.3.
The Sub-Committee may like to note/update. Item No. 4: Operational Statistics for the month February, 2019.
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.
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The Sub-Committee may kindly note.
Item No. 5: System disturbances in western region. There was no major grid disturbance in the Western Region during the month of February,2019. However, there was a grid disturbance in CSPTCL system which caused generation loss of 337 MW on 06/02/2019. And Tripping of multiple lines and units of ACBIL/MCCPL/SCPL which caused generation loss of 483 MW on 24/02/2019. The details of grid Disturbances/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.
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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. 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 First time availability certification for transmission system. CEO, PJTL(Power Grid Jabalpur Transmission System) vide letter dated 19.02.2019 informed that transmission elements of PJTL i.e 765KV Vindhyachal to Jabalpur D/C was commissioned on 01.01.2019(trail operation and CERC documents are attached at Annexure 8.4) and requested MS,WRPC to issue transmission availability certificate. The Sub-Committee may like to discuss the same.
8.5 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:
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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:
A. Data/information received (): Sr Name of Utilities Sr Name of Utilities No No
1 Chhattishgarh 13 KSK Mahanadi 2 Madhya Pradesh 14 MB Power(Hindustan Power) 3 NTPC 15 RKM Power 4 TATA Power 16 WRTS-II, PGCIL Vadodara 5 WRLDC 17 Gujarat 6 NHDC 18 SKS Energy 7 WRTS-I PGCIL, Nagpur 19 DB power 8 CGPL 20 JPL 9 APML 21 APL 10 Essar Mahan 22 GMR Chhattishgarh 11 GMR Warora 23 JNSTPS 12 NPCIL
B. Data/information Awaited (): SN Utilities Reason for non- submission 1 DTPS Dahanu
2 NCA Confidential as per
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NCA representative 3 DD
4 DNH
5 GOA SLDC Goa Representative informed that action will be taken 6 Sasan Power Sasan power Representative informed that action will be taken 7 Jhabua Power
8 Lanco Power
9 TRN Energy
10 ACBIL Energy
All utilities listed in Table- B are requested to submit the point-wise information during the meeting.
Sub-Committee may discuss /note the same. 8.6 Operation of Hydro power projects in peaking mode
Background: a) 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. b) 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. c) 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. d) 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
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advised to utilize the available water judiciously and schedule hydro stations for peaking mode of operation. e) 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. 8.7 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).
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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.
8.8 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 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.
8.9 Consequences of Implementation of 4th amendment of DSM regulation w.e.f. 01.01.19.
Background of issue discussed in 516th OCC: CE, SLDC, Gujarat vide letter dated 02.02.2019 have informed that Hon’ble Central Electricity Regulatory Commission has made fourth amendment in Deviation Settlement Mechanism (DSM) and related matters Regulations, 2014. It has been implemented with effect from 01.01.2019. The frequency band has been tightened (Earlier, it was 49.70 Hz to 50.10 Hz. Now, it is 49.85 Hz to 50.05 Hz). For the first time, the additional charges for violation of sign change has been introduced as specified below: “In the event of sustained deviation from schedule in one direction (positive or negative) by any regional entity (buyer or seller), such regional
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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 09.00 Hrs, sign of its deviation from schedule shall be changed in the 7th time block i.e. 09.00 Hrs to 09.15 Hrs from positive to negative or vice versa as the case may be. Provided that violation of the above shall attract an additional charge of 20% on the daily base DSM payable / receivable as the case may be.” The additional charge for violation of sign change stipulation shall be levied for each such violation during a day. In this regard, SLDC – Gujarat has made very sincere efforts to comply above directives. SLDC – Gujarat would like to share operational experiences with all WR utilities: The No. of ramp up and ramp down regulations of thermal generators have been increased. The wear and tear in thermal units have been increased. There are almost 80 interface points for deriving drawl of State. It is very difficult to get accurate data from all interface points in real time despite of taking all initiatives for getting accurate data. The two to five percent variation between actual SCADA data and metered data are always there. The attention and eyes of system operator remains only on deviation and sign reversal only. He cannot concentrate on other operational parameters in real time. As a result, the action of system operators are absolutely contrary to the requirement. Sometimes, they takes action for reducing drawl by rescheduling load, increases generation at high frequency vice a versa curtailing generation at low frequency for compliance of sign change clause of the regulation. The instances of wind energy curtailment, load rescheduling and load shedding have been increased. All above have been exercised vigorously to avoid huge burden of additional charges for violation of sign change. Even though, the SIC is not sure about the burden of additional charges on State Utilities. Moreover, there are 66 Nos. of intra State entities participating in State UI Pool account. The holding company do not allow SLDC to keep costly gas generators on bar just for avoiding additional charges for violation of sign change. There are limited Hydro resources. Their power schedule is based on irrigation and drinking water requirement. Therefore, the hydro and gas- based stations are not on disposal of system operator when it actual requires. Therefore, it is necessary that the views of other SLDCs and ISGS to be taken thoroughly and matter to be represented at appropriate authority for necessary change in regulations. 517th OCC Agenda Page 13
516th OCC Discussion:
SE (Opn), WRPC requested CE SLDC Gujarat to briefly explain the forum about operational experience and issues faced by Gujarat due to implementation of 4th DSM amendment. CE SLDC Gujarat informed that due to the implementation of DSM 4th amendment Gujarat is shedding the load and backing down generation, Renewable generation to achieve sign reversal to avoid violation penalty. Further he also informed that all states are paying huge amounts more than the receivables due to the violation clause in DSM regulation. He also informed that DSM 4th amendment is contradicting provisions of IEGC.He requested MS,WRPC to submit the concerns of all utilities to Hon’ble CERC through WRPC chairman as decided in the 37th WRPC meeting.
Maharashtra representative informed that to achieve sign reversals thermal generators are backed down and hydro generators were taken into service frequently which is not optimum utilisation of resources. Further he informed that as SCADA data value is not reliable, difficulties are being faced to recognise the sign reversal in real time due to which violation penalties have been imposed in DSM accounts on Maharashtra.
NTPC representative informed that Solapur plant paid penalty of approx. 7 crores even though there is zero schedule for the plant.
CGPL representative informed that in a day 50 to 55 revisions are being made in generation schedule which is becoming difficult to implement. He also informed that as a generator its primary responsibility is to generate as it’s injection schedule but to maintain the violation criteria of DSM regulations the generator has to violate it’s schedule, hence the regulations are contradictory in nature from CGPL’s perspective.
GMR Warora representative informed that time drift of 7 to 8 minutes exists between PGCIL meter and meter at plant and in spite of maintaining violation stipulation of DSM regulations they have incurred violation penalty to a tune of 1 crore due to time drift errors in accounting meters.
NTPC representative informed that in some occasions thermal plants are getting technical minimum schedule and sign reversal to negative side is difficult to implement at technical minimum. He also informed that in during high frequency situations generator is not allowed to inject more
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power as per IEGC and DSM 4th amendment is contradictory in this regard.
NSPCL representative informed that NSPCL was penalised in 12 blocks in last three weeks. He informed that deviation in these blocks is 0.02 MW to 0.5 MW which is due to meter errors and drifts and these are also penalised for deviation
CS, representative informed that due to DSM 4th amendment wind and bio mass energy generators have to be backed down for sign reversal and becoming difficult to implement minimum environmental norms.
In view of the numerous concerns and huge financial implication on all stake holders MS,WRPC requested all entities to submit comments to WRPC on impact of 4th DSM amendment regulations within one week to WRPC secretariat for further necessary action.
516th OCC Decision :
Members of the Sub-Committee agreed to submit their comments within one week after receiving the concerns/ comments a letter highlighting the concerns would be sent to Hon’ble CERC through Chairman, WRPC.
As per above decision, all members were supposed to furnish the comments within a week time and incorporating all the comments / concerns, WRPC Secretariat would write to Hon’ble CERC. However no comments have been received from any member except NTPC, Gujarat, RKM power, Torrent power and GMR power. All members are again requested to send the comments /concerns on 4th amendment of DSM regulation so that the same can be conveyed to CERC well before 01st April 2019
The Sub-Committee may like to discuss 8.10 Automatic Under Freq. Load Shedding Scheme (AUFLS) (A) Review of AUFLS settings The review of AUFLS scheme was being deliberated from the 2nd NPC meetings. National Power committee (NPC) in its 8th meeting dated 30th November 2018 has revised AUFLS settings by 0.2Hz each (MoM of 8th NPC at Annexure 8.10). The decision of the 8th NPC w.r.t to AUFLS scheme is as follows:
Quote
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After deliberation, the committee, agreed for the AUFLS scheme with 4stages and raising the frequency by 0.2 Hz viz. 49.4, 49.2, 49.0 & 48.8 Hz. The quantum for AUFLS would be reworked by NPC Secretariat based on the deliberation. It was also decided that, NRPC may appoint a Consultant from their own resources as proposed by MS (NRPC) for studying the AUFLS scheme for Indian grid and submit the study report to NPC Secretariat within a time of six months. The revised load relief for AUFLS computed by NPC Secretariat would be discussed along with the report of Consultant appointed by NRPC (if available), in the next meeting of NPC which would be held in the month of May, 2019.
Unquote
516th OCC Discussion: SE (opn) informed that 8th meeting of NPC agreed for AUFLS scheme with raising frequency by 0.2Hz viz 49.4,49.2,49.0 & 48.8 Hz. He requested all states and UTs to implement the changes in their AUFLS scheme on priority with intimation to WRPC. OCC subcommittee noted the same and agreed to change settings.
During 516th OCC, all beneficiaries are requested to change their AUFLS settings as per the decision of the 8th NPC at the earliest under intimation to WRPC secretariat. However, no intimation have been received from any beneficiaries changing the AULFS setting.
All beneficiaries may give status update to OCC subcommittee.
OCC subcommittee may like to discuss.
(B) Mapping of feeders
Background (516th OCC): Mapping of Feeders: In the 7th Meeting of NPC, it was agreed that each RPC would submit the details / progress of feeder mapping to NPC secretariat. In 8th NPC, WRPC Secretariat made the following statement: “WRPC has informed that the issue of mapping of feeders was discussed in OCC several times in recent past. In the 493rd OCC, all the constituents were requested to initiate the process of mapping of AULFS feeders in SCADA system as most of these feeders are not covered by SCADA. During the discussion, the Western Region constituents normally raised the following concerns: Maharashtra:
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AULFS wired feeders are at 66kV, 33kV and even at 11 kV level and these feeders are not covered under SCADA at present. Gujarat: Most of the AULF wired feeders are at 66kV which is not yet covered under SCADA and therefore these cannot be mapped at present. The views of remaining constituents are same as above” Under this agenda item, the following has been recorded in 8th NPC MoM.: Quote After deliberation, it was agreed that each RPC would submit the details / progress of feeder mapping to NPC secretariat on a regular basis (quarterly).”
The issue of mapping of feeders have been discussed in 516th OCC and the following was the recommendation of 516th OCC: Quote: MS,WRPC requested SLDC to provide details of typical substation of 66/33/11 KV levels where problems are being faced, so that study can be carried out by IIT/IISc for suitable implementation of feeder mapping.
SLDCs agreed to provide the details within one week. Unquote
In view of above, SLDCs may update the status.
8.11 Details of existing transmission system (220 KV and above AC& DC voltage level) in the country as on 31st December 2018.
Background (516th OCC):
PSPM Division, CEA vide letter dated 28/01/2018 (letter enclosed at annexure 8.11) has requested for Details of existing transmission system (220 KV and above AC& DC voltage level) in the country as on 31st December 2018. An e-mail regarding the same has been sent by Operation Division, WRPC on 01/02/2019. All SLDCs, Transmission licensees are requested to kindly furnish the data to [email protected] with a copy to opc- [email protected]. 516th OCC Discussion: SE (Opn) informed that CE,PSPM Division requested for Details of existing transmission system (220 KV and above AC& DC voltage level) in
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the country as on 31st December 2018. He requested concerned entities to submit data at the earliest to CEA.
All entities may give status update.
8.12 Ambient temperature adjusted TTC 514th OCC background:
TTC assessment considering temperature dependant rating of lines and equipment:
NPC vide its letter 3/NRC/NPC/CEA/2018/942-948 dated 20.09.2018 raised the issue of ambient temperature adjustment TTC. In above said letter NPC stated that, in line with the decisions of the meeting of sub- committee of NRCE for finalising the methodology for computation of TTC/ATC/TRM, PGCIL vide letter dated 18.04.2018 has submitted the current rating of terminal equipment for high capacity 400 KV lines owned by PGCIL.
In this issue POSOCO has further requested that terminal equipment rating of STU and other transmission licensees would also be required for full implementing of temperature adjusted TTC. Lastly NPC requested that the terminal equipment rating of STU and other transmission licensees of WR may be compiled and furnished to POSOCO with a intimation to NPC on priority basis.
Discussions 516th OCC:
SE Operation, WRPC requested all the STU/ transmission licensees to furnish the details of terminal equipment rating so that same can be compiled and further transmitted to POSOCO & NPC.
A meeting was held among NPC, PGCIL and POSOCO on “Ambient temperature adjusted TTC” on 05/02/2019 at NPC. The summary records of discussion is attached at annexure 8.12.
In above meeting, it was decided that the terminal equipment rating of STUs and other private ISTS transmission licences to POSOCO with a copy to NPC, CEA. The abstract of important points is as follow:
Quote
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It was observed that though the end equipment ratings are required for both the planning and operational studies, it becomes crucial for carrying out ambient temperature adjusted TTC/ATC studies of all the regions by POSOCO. Therefore, all the constituents i.e CEA, CTU, POSOCO(NLDC/RLDC) and RPCs should make all efforts to compile this information.
Unquote
In view of the above STUs and private ISTS transmission licensees of western region may furnish the terminal equipment rating immediately to POSOCO with a copy to NPC division, CEA. This detail may be furnished on the following email id [email protected] and [email protected].
OCC members may like to discuss the same. 8.13 Schedule for Rattan India Power Limited, Amravati
Shri Anil Kumar Mishra, AVP Rattan India Power Limited, Amravati vide e-mail dated 07/03/2019 informed that RIPL is not receiving any schedule from 2 months. He also informed that RIPL, amravati accumulated 8.08 lakh metric ton of coal based on the discussions with MSEDCL.
He further stated that due to rising ambient temperature and spontaneous heating of the coal, the same is catching fire and it is getting difficult day by day to control the heating and the fire in the coal. This may cause a major catastrophe damaging the safety and environment in and around the plant.
OCC members may like to discuss the same.
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Item No 9. WRLDC Agenda Items 9.1 Primary Frequency Response
The average primary response of generators for last three events are shown below.
Event-33 Event-34 Event-35
NR-1400 NR-960 NR-900 Average 23-01-19 05-02-19 Respons S.No Generator/Station 16-01-19 12:26:00 06:37:10 11:57:10 e as % of Ideal 49.97 49.96 50.13
49.92 49.92 50.16
-0.05 -0.04 0.03
1 VSTPS-III(2x500) 0% 178% 120% 99%
2 KSTPS-II(3x500) 19% 101% 114% 78%
3 KSTPS-I (3x200) 70% 41% 120% 77%
4 KSTPS-III(1x500) 40% 110% 70% 73%
5 SIPAT-I(3x660) 71% 19% 121% 70%
6 MB Power(2x600) 47% 100% 49% 65%
7 DB Power(2x600) 51% 120% 7% 59%
8 SASAN(6x660) 47% 0% 121% 56%
9 Essar Mahan(2x600) 82% 34% 51% 56%
10 Lanco (2x300) 16% 25% 120% 54%
11 APML Tiroda(5x660) 23% 41% 86% 50%
12 VSTPS-IV(2x500) 0% 120% 20% 46%
13 Mouda-I(2x500) 119% 0% 11% 43%
14 Mouda-II (2x660) 53% 0% 59% 37%
15 JPL I (4x250) 73% 0% 36% 37%
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JPL Tamnar (Stage 16 II)(4x600) 0% 5% 95% 33%
17 Balco (4x300) 28% 0% 64% 30%
18 CGPL(5x830) 47% 40% 0% 29%
19 KSK(3x600) 5% 22% 20% 16%
20 VSTPS-II(2x500) 0% 0% 40% 13%
21 SIPAT-II(2x500) 0% 0% 30% 10%
22 JP NIGRIE(2x600) 0% 9% 0% 3%
23 VSTPS-I (6x210) 0% 0% 0% 0%
24 GMR Raipur(2x685) 0% 0% 0% 0%
25 TRN (2x300) 0% 0% 0% 0%
26 Jhabua (1x600) 0% 0% 0% 0%
Data non-current/Zero Generation Based on the “report of expert group to review and suggest measures for bringing power system operation closer to national reference frequency”, the minimum frequency response expected is at least 40% of ideal response.
Hon’ble CERC notified Terms and Conditions of Tariff Regulations, 2019 on 7 Mar 19 and these regulations shall come into force on 1.4.2019. Clause no 30.2.i & 30.2.ii related to RGMO or FGMO are quoted below
Quote In case of a new project, the rate of return on equity shall be reduced by 1.00% for such period as may be decided by the Commission, if the generating station or transmission system is found to be declared under commercial operation without commissioning of any of the Restricted Governor Mode Operation (RGMO) or Free Governor Mode Operation (FGMO), data telemetry, communication system up to load dispatch center or protection system based on the report submitted by the respective RLDC.
in case of existing generating station, as and when any of the requirements under (i) above of this Regulation are found lacking based
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on the report submitted by the concerned RLDC, rate of return on equity shall be reduced by 1.00% for the period for which the deficiency continues. Unquote
Generating stations whose frequency response is below 40% may apprise OCC, actions being taken to improve the frequency response.
9.2 Web Based OCC Outages Software for replacing the existing Google Sheet
As discussed in 516 OCC meeting, hands-on training on web based outage software to utilities was conducted on 22 Feb 19 at WRLDC. More than 50 representatives from utilities viz. PGCIL, NTPC, Sterlite, Adani, GETCO, MSETCL, MPPTCL and CSPTCL etc. Feedback received from the participants is being incorporated in the software.
At present google sheet and web based software are operating in parallel and utilities are filling their readiness and comments in both. The process of updating of database for web based software is under progress.
9.3 Voltage Regulation in Western Region
9.3.1 High Voltage Nodes In the month of Feb’19, 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. % time Fault Remarks Voltage Station Voltage > than level S.No Deviation Name IEGC Index threshold 1 Dhule 85.37 0.85 21451 - 2 Wardha 75.01 0.75 66917 - 3 Kalwa 72.21 0.72 22515 - 23424 Prolonged outage of 80MVAR LR of 400 kV KARAD- LONIKHAND- 4 Karad 60.65 0.61 1 @KARAD
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from 14-09- 2017 28921 MVAR injection by RKM, DB Power, JPL, 5 Raigarh 59.16 0.59 TRN 6 Kasor 57.08 0.57 15050 - 25408 MVAR injection by 7 Dehgam 56.04 0.56 Wanakbori 8 Mapusa 51.11 0.51 6354 - 42154 MVAR injection by RKM, DB Power, JPL, 9 Raipur 44.14 0.44 TRN 10 Magarwada 37.93 0.38 15567 - 11 Boisar 34.39 0.34 28108 - 12 Parli 28.56 0.29 32649 - 13 Damoh 17.13 0.17 11727 - 14 Khandwa 16.22 0.16 20859 -
9.3.2 Generators injecting MVAR into Grid The MW, MVAR and Voltage of generating units was analyzed for the month of Feb 19 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)
9.4 Preparedness for ensuring adequacy of Power Supply during Summer (April-June)
During summer, temperatures would remain above normal values in many areas. In the past several generating stations have been affected due to
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inadequate coal stock and water shortage. The actual demand of constituents in April-June is tabulated below:
Constituent Daily Energy Peak Demand Consumption in MUs in MW (Apr-Jun 18) (Apr-Jun 18) Maharashtra 385-517 16753-23755 Gujarat 316-375 14165-16983 Madhya 141-184 6788-9057 Pradesh Chhattisgarh 67-91 3018-3949 Goa 8-12 363-561 DNH 15-18 714-792 DD 5-8 274-382
The following aspects may be reviewed: Revised short term demand forecast of the State Review of outages of transmission elements which need backing down of generation and exploration of availing outages in the off peak hours which have impact on generation Measures being taken for ensuring adequacy of power supply and avoid load shedding in respective States Available coal stock in thermal power stations and measures being taken to ensure adequate fuel availability: (RKM, JPL, EPGL and KSK to update the status specifically) Availability of water for thermal stations (Parli, Tirora, Mouda, Chandrapur to specifically update the status) Availability/ Water level in reservoir hydro (Koyna, SSP, Kadana, Ukai and Bargi etc.) Import transfer capability of States
OCC members may like to deliberate
9.5 Extension of outages of critical elements
As per approved outage procedure, utilities should adhere to outage schedules. After availing outages utilities should restore the element as per time line approved in OCC meetings. However it has been observed that utilities are not adhering to time line specified in OCC meeting and extending outages beyond approved timelines. In recent times planned outages of critical elements like 400 kV Rajgarh-Nagda D/C, 400 kV APL
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Mundra-Kansari, 400 kV Varsana-Kansari, 400 kV Kalwa-Karghar and 400 kV Pune-Kalwa are extended beyond approved timelines.
Extension of outages beyond approved timeline is affecting the outage schedules of other parallel and nearby elements. It may also result in critical loading of other elements during contingences.
OCC forum may like to discuss.
9.6 Delayed submission of First Time Charging (FTC) documents and Non-compliance of FTC procedure by MPPTCL
In 516 OCC meeting, NLDC and WRLDC mentioned that the first time charging documents A1-A6 has to be submitted on D-10 (ten days in advance) and B1-B5 on D-5 to RLDC. RLDC can send the A1-A6 documents to NLDC on D-5 and B1-B5 documents at least two working days in advance. However it has been observed that MPPTCL is not submitting the FTC documents as per time line mentioned above. Many a times operation code for charging is sought even before confirming protection coordination with adjacent stations. The above issues were faced while coordination FTC of elements at 400/220 kV Badnawar (LILO of 400 kV Nagda-Rajgarh-D/C)
Following documents need to be forwarded to WRLDC control room while intimating / seeking charging code first time for transmission elements Format-IV (Approval of FTC from RLDC) Sequence of charging elements To intimate whether it is test charging or anti-theft charging or trial operation for 24 Hrs Study results from STU related to voltage rise/fall and major change in MW flows after charging element. Endorsement from neighboring substations regarding protection coordination. Undertaking that all men and material have been removed
OCC members may like to note the above.
9.7 Ramp compliance of Thermal Generators as per T&C of tariff
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Hon’ble CERC notified Terms and Conditions of Tariff Regulations, 2019 on 7 Mar 19 and these regulations shall come into force on 1.4.2019. Clause no 30.2.iiii related to thermal generators ramp rate are quoted below
Quote
“in case of a thermal generating station, with effect from 1.4.2020:
a) rate of return on equity shall be reduced by 0.25% in case of failure to achieve the ramp rate of 1% per minute;
b) an additional rate of return on equity of 0.25% shall be allowed for every incremental ramp rate of 1% per minute achieved over and above the ramp rate of 1% per minute, subject to ceiling of additional rate of return on equity of 1.00%: Provided that the detailed guidelines in this regard shall be issued by National Load Dispatch Centre by 30.6.2019.”
Unquote
OCC members may like to note the above.
9.8 Lines / ICTs opened to control overloading
Following elements are kept open to control line/ICTs loading in downstream network. WRLDC reported the same in operational feedback of WRLDC to CERC, States/utilities to expedite the commissioning related elements.
Transmission Sl. Overloaded Element (s) Remarks No corridor opened
220 kV outlets from Pune (PG) to be expedited by To control MSETCL. loading in 220 400/220 kV 43rd SCM: MSETCL intimated 1. kV Pune (PG) – Pune(PG) one ICT that Talegaon (PG)–Talegaon Talegaon D/C (M)–Urse–Chinchwad 220 kV lines D/C is planned & under implementation and this line has been completed up to
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Transmission Sl. Overloaded Element (s) Remarks No corridor opened
Urse S/s. One ICT is kept opened to control load on 220kV Urse –Chinchwad S/C. It was intimated that Urse– Chinchwad 220 kV D/C and Pune (PG)–Hingewadi 220 kV D/C would be expected to get completed by Dec, 2018.
Present Status: Lines has not yet commissioned.
With the commissioning of 4th ICT (500 MVA) in May’18 at Boisar PG, Boisar-Boisar-T/c line loading further increased. To control the loading, one ICT at Boisar PG is kept out To control to control line loading. 400/220kV one loading on 2 Remedial Action: ICT at Boisar PG 220kV Boisar- Boisar T/c lines Commissioning of 220kV Boisar-Borivali line LILO at Boisar PG & 220kV Boisar PG-Wada D/c line would relieve loading on Boisar- Boisar lines and reliability of Boisar PG area.
Commissioning of other To control outlets from Navsari PG 220kV Nasik- loading on 220kV would help in relieving Navsari one ckt & 3 220kV Navsari loading on 220kV Navsari PG- 400/220kV one PG-Navsari D/c Navsari D/c lines and ICT at Navsari PG lines reliability of supply of Navsari area.
4 220kV Korba East- To control DSPM (2x250 MW) generation Buddipadar S/c loading on was planned with LILO of
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Transmission Sl. Overloaded Element (s) Remarks No corridor opened
line 220kV DSPM- existing 220kV Korba West- Korba East lines Korba East one ckt and 220kV Suhela-Banari line. No additional lines were planned for DSPM evacuation. This has resulted in overloading of 220kV DSPM-Korba East line when the power flow is towards Budhipadar end.
Keeping Satna PG-Maihar S/c increases the loading on To control 400/220kV ICTs at Satna PG loading on and also results in power flow 220kV Satna PG- 400/220kV from Satna PG-Maihar-Katni Maihar S/c ICTs at Satna (400kV). To avoid this 220kV 5 132kV Satna- PG & Satna PG-Maihar kept Maihar 132kV 220/132kV opened. Further 132kV Satna-Kymore (2x160 MVA) Satna-Maihar and 132kV ICTs at Satna Satna-Kymore line also kept MPPTCL out to control loading on 220/132kV (2x160 MVA) ICTs at Satna MPPTCL.
Almost most of the time 400/220kV (3x315 MVA) ICTs at Bina MPPTCL are loaded above 200MW. When total To control loading on ICTs above 750 220kV Bina MP- loading on MW, becomes N-1 non- 6 Datia & 220kV 400/220kV compliant. To control the the Bina MP- Shivpuri ICTs at Bina loading on above said ICTs MPPTCL 220kV Bina MP-Datia & 220kV Bina MP-Shivpuri line kept opened. ICTs were N-1 non-compliant after opening these lines for 20% of the time in month of Oct’18 &
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Transmission Sl. Overloaded Element (s) Remarks No corridor opened
Nov’18.
ICTs at Ektuni are N-1 non- compliant for 5% of the time. 400kV Ektuni- To control To facilitate the outage on any Bableshwar one loading on of the ICT requires opening of 7 ckt & 400kV 765/400kV 400kV Ektuni-Bableshwar Ektuni-Taptitanda ICTs at Ektuni. one ckt or Ektuni-Taptitanda one line one ckt. Also generation backing down also required.
To control loading on 220kV Amreli-Sawarkundla 220kV Amreli- 400kV Hadala- D/c line was N-1 non 8 Sawarkundla Amreli line compliant for 55% of the time line/ 220kV during the quarter. Jetpur-Gondal line
Utilities may apprise OCC, actions being to control line/ICT loading and the present status of commissioning of new elements to relieve overloading of above mentioned elements.
9.9 Providing of wind turbine data of wind farms in control area of SLDCs as per direction of Hon’ble CERC.
Information is to be submitted to Hon’ble CERC as per Recording of Proceeding issued by CERC in Petition No.237/MP/2017 along with I.A. No. 11/2018.
Quote
The Commission further directed the POSOCO to submit the States WTG-wise data containing (i) population of wind turbines as per models, make and voltage levels, and (ii) details of LVRT enabled, LVRT design supported and
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fitted to be enabled, LVRT design supported but to be fitted and LVRT to be retrofitted.
Unquote
Vide clause 8 of the subject ROP, Hon’ble CERC have directed all the parties to submit the information within one month from the issue of ROP that is till 08.03.19.
In this regard, a request for submission of the required data in prescribed format was made to all SLDCs vide e-mail dated 04.03.19 and subsequently letter dated 07.03.19. The information is still awaited.
All SLDCs are requested to submit the required data of all WTGs installed in your control area in the prescribed format at the earliest for onward submission to Hon’ble Commission.
9.10 Telemetry issues
a. Monthly telemetry status as per CERC mandate 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. The telemetry status for the month of Feb. 2019 is shown in the table below:
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The list of stations is attached in Annexure 9.10(a) As agreed in the 515th OCC meeting, the telemetry status has been updated for the month of Feb. 2019 by 5th March. 2019. The intermittency and non-availability of telemetry may be explained by respective states.
b. Prolonged outage of Telemetered data. Prolonged outage of telemetry has been observed in the following stations Sr Station Outage Date Restoration Date No
1 IEPL 26-Nov-2018 19:45 Still down (Maharashtra) hrs 2 Kudus 02-Mar-2019 23:30 Still down (Maharashtra) hrs
SLDC, Kalwa may update the status, reason and possible restoration date
c. Correct telemetered data from old NTPC stations The telemetry issues of old NTPC stations viz. Kawas, Gandhar, KSTPS and VSTPS was discussed in 515th OCC meeting. The list of points is attached in Annexure 9.10(c). As per the 515th OCC meeting, a meeting was to be conducted between NTPC and PGCIL for the
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resolution of issues. KSTPS was attended by Manas automation however some the issues are still pending.
NTPC may update the progress
d. Regional Communication Meeting under CERC Communication Regulation 2017 As discussed in 515th OCC, a meeting is required to be conducted quarterly at RPC level for discussing issues in communication and telemetry in WR.
Members may finalize the date of the meeting
Item No. 10: Date and venue of next OCC meeting
The date & venue of 518th OCC meeting will be intimated later on.
The Sub- Committee may like to note as above
**********************
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Anaulagnak 2.1
frvarI 2019 maoM AavaRi%t ko AaMkD,aoM ka ivavarNa (piScama xao~ Baar p`oYaNa kond` kI AavaRi%t irpaoT- ko AaQaar pr) FREQUENCY PARTICULARS DURING FEBRUARY 2019 (AS PER FREQUENCY REPORT OF WRLDC) 1. INTEGRATED OVER AN-HOUR ek GaMTo maoM samaakilat
1.1 MAXIMUM FREQUENCY 50.12 Hz. BETWEEN 1300 Hrs & 1400 Hrs on 20.02.2019 AiQaktma AavaRi%t
1.2 MINIMUM FREQUENCY 49.83 Hz. BETWEEN 0000 Hrs & 0100 Hrs Hrs. ON 21.02.2019 nyaUnatma AavaRi%t
1.3 AVERAGE FREQUENCY 50.00 Hz. AaOsat AavaRi%t 2. INSTANTANEOUS ta%kailak
2.1 MAXIMUM FREQUENCY 50.27 27 th Feb at 06:03:40 AiQaktma AavaRi%t
2.2 MINIMUM FREQUENCY 49.68 on 01st Feb at 12:42:50 hrs nyaUnatma AavaRi%t
3. %AGE OF TIME WHEN FREQUENCY WAS frvarI 2019 janavarI 2018 idsaMbar 2018 AavaRi%t ka samaya p`itSat maoM
3.1 Below 49.9 Hz. 7.01 10.69 12.68 49.9 hT\ja sao kma 3.2 BETWEEN 49.9 Hz. AND 50.05 Hz. 70.73 70.26 77.03 49.9 hT\ja AaOr 50.05 hT\ja ko baIca mao 3.3 ABOVE 50.05 Hz. 22.26 19.06 10.29 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