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 NumberPetition No. 215/MP/2011 with I.A. No. 43/2012
Party NameEastern Regional Load Despatch Centre, Kolkata Vs Bihar State Electricity Board, Patna and Ors.
JudgesDr. Pramod Deo, Chairperson and Shri M. Deena Dayalan, Member
IssueElectricity Act, 2003 - Sections 142, 2(54), 25, 28 (e), 29(4)
Judgement DateOctober 09, 2012
CourtCentral 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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