Petition Nos. 168, 178 and 194/MP/2011 with I.A. Nos. 39, 44 and 46/2012. Case: 1. Northern Regional Load Despatch Centre, New Delhi, 2. Southern Regional Load Despatch Centre, Bangalore, 3. Western Regional Load Despatch Centre, Mumbai Vs 1. Uttar Pradesh State Load Despatch Centre, Lucknow and Ors., 2. Ramagundam STG I & II, NTPC, RSTPS, Karim Nagar, Andhra Pradesh and Ors., 3. Maharashtra State Electricity Transmission Co. Ltd., Mumbai and Ors.. Central Electricity Regulatory Commission

Case NumberPetition Nos. 168, 178 and 194/MP/2011 with I.A. Nos. 39, 44 and 46/2012
JudgesDr. Pramod Deo, Chairperson and Shri S. Jayaraman, Member
IssueElectricity Act, 2003 - Sections 142, 2(54), 28(e)
Judgement DateSeptember 26, 2012
CourtCentral Electricity Regulatory Commission


(New Delhi)

1. The petitioners, Northern Regional Load Despatch Centre, Southern

Regional Load Despatch Centre and Western Regional Load Despatch Centre have

filed these petitions seeking directions to all users of Northern Region,

Southern Region and Western Region to establish the 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

Central Commission from time to time. The petitioners have submitted that in

terms of Section 28(e) of

the Electricity Act, 2003 (the Act), they are 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 petitioners have 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 CERC

a comprehensive proposal for institutional mechanism for planning and

implementation of communication system for power sector.

3. The petitioners have submitted that in accordance with Section 2(54) of

the Act, Regulation 5(3) of CEA Connectivity Regulations and detailed

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 the Connectivity

Regulations), user, who is getting connected to the grid, is solely responsible

to provide the telemetry to the Load Despatch Centres. 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


4. The petitioners have submitted that despite continuous efforts and

persuasion with the concerned utilities, relevant 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 petitioners have submitted the status in respect of the deficiencies

in telemetry in the Regions, which including 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


(d) Voice communication not available.

6. In Petition No. 168/MP/2012, replies have has been filed by SLDC, Uttar

Pradesh Power Transmission Corporation Ltd., Jaypee Karcham Hydro Corporation

Ltd., Himachal Pradesh Electricity Board, SLDC, Delhi, Aravali Power

Corporation Pvt. Ltd., Power Transmission Corporation of Uttarakhand Ltd., NHPC

Ltd and Nuclear Power Corporation Ltd.

7. State Load Despatch Centre, UP in its reply affidavit dated 19.10.2011

has submitted that in order to fulfill the telemetry requirement, in line with

IEGC, Uttar Pradesh Electricity Regulatory Commission has notified UP

Electricity Grid Code, 2007, which provides that all users shall provide

systems to telemeter power system parameters such as power flow, voltage and

status of circuit breakers, isolators and flow of active power etc. It has been

submitted that Uttar Pradesh Power Transmission Corporation Ltd is carrying out

expansion of SCADA Phase-II along with Power Grid and Optical Ground Wire (OPGW)

is being installed on some existing transmission lines in lieu of Microwave

Communication System and all new 220 kV and above transmission lines. Efforts

are being made to resolve the problem enumerated by NRLDC and it would be

resolved shortly. SLDC, UP has submitted that although there is a provision for

metering and scheduling for power purchase through MOU Route, however, there is no provision

for telemetry system, which is to be installed by the generating companies or

IPPs. SLDC, UP has requested to issue directions to UPPCL to execute

supplementary agreements in case of all power purchasing agreements where power

purchase has been done through MOU Route incorporating the provision of


8. Jaypee Karcham Hydro Corporation Ltd. in its reply affidavit dated

21.10.2011 has submitted that the real time data from Karcham Wangtoo Power

Station is being sent to NRLDC through V-Sat as well as GPRS communication and

shall make the data available in future also on regular basis.

9. Himachal Pradesh State Electricity Board (HPSEB) in its reply affidavit

dated 21.11.2011 has submitted that in order to cover entire network of the

State (66 kV and above), seven more RTUs at different identified locations have

been proposed to be installed during the implementation of

replacement/up-gradation of SCADA/EMS system for NR (ULDC Phase-II) Scheme.

HPSEB has also proposed to install 351 km of optical ground wire (OPGW) along

with multiplexers at identified locations in ULDC phase-II scheme, so that most

of the State network may be covered through wideband link for data/speech


10. State Load Despatch Centre, Delhi Transmission Corporation Ltd. in its

reply affidavit dated 21.11.2011 has submitted that due to certain reasons

beyond the control of the respondent it could not provide complete data

integration with reference to new sub-stations and generating stations only.

The data integration of all generating stations had already been completed. The

data integration of only one 400 kV (Mundka commissioned on 28.9.2010) and two

220 kV sub-stations (namely Ridge Valley-commissioned on 25.9.2010 and

DIAL-commissioned on 27.9.2010) are still pending. SLDC, Delhi

has submitted that the integration is likely to completed by 31.12.2011 for Ridge Valley

and DIAL Sub-station and by 31.3.2012 for 400 kV Mundka sub-station.

11. Aravali Power Corporation Pvt. Ltd. (APCL) in its reply affidavit dated

11.11.2011 has submitted that its station IGSTPS, Jhajjar established data

telemetry through two independent channels over Jhajjar Mundka transmission

line PLCC up to Mundka sub-station. Thereafter, the data is transferred through

Mundka Bawana Line PLCC (in custody of DTL) at Bawana sub-station. IGSTPP is


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