Petition No. 215/MP/2011 with I.A. No. 43/2012. Case: Eastern Regional Load Despatch Centre, Kolkata Vs Bihar State Electricity Board, Patna and Ors.. Central Electricity Regulatory Commission
| Case Number | Petition No. 215/MP/2011 with I.A. No. 43/2012 |
| Judges | Dr. Pramod Deo, Chairperson and Shri M. Deena Dayalan, Member |
| Issue | Electricity Act, 2003 - Sections 142, 2(54), 25, 28 (e), 29(4) |
| Judgement Date | October 09, 2012 |
| Court | Central Electricity Regulatory Commission |
Order:
(New Delhi)
1. The petitioner, Eastern Regional Load Despatch Centre (ERLDC) has filed
this petition seeking directions to all users of Eastern Region to establish
and maintain the data telemetry and communication facilities in terms of the
Central Electricity Regulatory Commission (Indian Electricity Grid Code)
Regulations, 2010 (hereinafter referred to as 'the Grid Code'), Central
Electricity Authority (Technical Standards for connectivity to the Grid) Regulations,
2007 (hereinafter referred to as 'CEA Connectivity Regulations') and various
other regulations issued by the Central Commission from time to time. The
petitioner has submitted that in terms of Section 28 (e) of
the Electricity Act, 2003 (the Act), ERLDC is responsible for carrying out real
time operations for the grid control and despatch of electricity within the
region through secure and economic operation of the regional grid in accordance
with the Grid Standards and the Grid Code. The real time data is vital for
taking decisions during grid operation in terms of Section 2(54) of
the Act. Further, to maintain security and reliability of the network, state
estimator tool is used at control centre to determine the current state of
system and perform contingency analysis. The accuracy of state estimator
results also depends on the real time data availability (digital and analog)
from the users.
2. The petitioner has submitted that getting real time data of various power
system elements using reliable communication system has become an essential
pre-requisite for successful operation of modern power system and in this
regard, POSOCO vide its letter dated 19.11.2010 had submitted to the Central
Commission a comprehensive proposal for institutional mechanism for planning
and implementation of communication system for power sector.
3. The petitioner has submitted that in accordance with Section 2(54) of
the Act, Regulation 5(3) of CEA Connectivity Regulations and details procedures
of Central Transmission Utility approved under Regulation 27(1) of the Central
Electricity Regulatory Commission (Grant of Connectivity, Long-Term Access and
medium-term open Access in inter-state Transmission and related matters)
Regulations 2009 (hereinafter referred to as 'CERC Connectivity Regulations'),
user, who is getting connected to the grid, is solely responsible to provide
the telemetry to the Load Despatch Centre. The Central Transmission Utility
(CTU)/State Transmission Utilities (STUs) are to coordinate the required
communication for voice and data. The associated communication system to
facilitate data flow up to appropriate data collection point on CTU system
shall also be established by the concerned user or STU as specified by CTU in
the Connection Agreement. All users/STUs in coordination with CTU shall provide
the required facilities at their respective ends as specified in the Connection
Agreement.
4. The petitioner has submitted that despite continuous efforts and
persuasion with the concerned utilities/users, requisite data from a number of
generating stations/sub-stations are still not being telemetered to the
concerned RLDCs. These issues were raised in the various Regional Power
Committee (RPC) forums, namely Operation Coordination Sub-Committee (OCC)/ULDC
Scheme Monitoring Group (USMG), Technical Coordination Committee
(TCC)/concerned Regional Power Committee (RPC) Board.
5. The petitioner has submitted the status in respect of the deficiencies in
telemetry in the Eastern Region, which includes the following:
(a) Telemetry not provided;
(b) Telemetry provided but not working/working intermittently;
(c) Data telemetry is working on single communication channel hence lack
reliability;
(d) Voice communication not available.
6. Replies to the petition have been filed by NHPC, NTPC and Damodar Valley
Corporation and West Bengal State Electricity Transmission Company Limited.
7. NHPC Ltd. in its reply affidavit dated 4.1.2012 has submitted that for
Teesta-V Hydro Electric Project (HEP), the matter has been taken up with
Powergrid and would be rectified shortly as and when the shutdown is taken. For
Rangit HEP also the matter has been taken up with Powergrid and the Original
Equipment Manufacturer (OEM) and Power Grid has intimated that the online
disturbance is due to problem in Power Line Carrier Communication (PLCC)
Channel. For the upcoming generating stations of NHPC, procurement,
installation, testing and commissioning of PLCC panels with exchange, Line
Matching Unit (LMU) etc. is in the scope of the transmission line executing
agency at both the ends.
8. NTPC Ltd. in its reply affidavit dated 11.1.2012 and 24.2.2012 has
submitted that 400 kV Barh switchyard has been charged but the generating
station is yet to be commissioned. SCADA hardware has been installed and
interface with CTU telemetry is being commissioned. CTU has to ensure further
communication till ERLDC. Farakka Unit # 6 is yet to declare commercial
operation. Necessary hardware for extending power station inputs up to Data
Collection Point (DCP) of CTU has been commissioned and CTU has to ensure
further communication till ERLDC. The non-availability of data from 220 kV
Lalmatia has been investigated and problem identified in the PLCC link was
rectified on 29.11.2011 and now data is available at DCP of CTU. With regard to
Talcher STPS, Kahalgaon STPS and Farakka STPS, it has been submitted that the
metering location of generator terminal is...
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