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 Number | Petition Nos. 168, 178 and 194/MP/2011 with I.A. Nos. 39, 44 and 46/2012 |
| Judges | Dr. Pramod Deo, Chairperson and Shri S. Jayaraman, Member |
| Issue | Electricity Act, 2003 - Sections 142, 2(54), 28(e) |
| Judgement Date | September 26, 2012 |
| Court | Central Electricity Regulatory Commission |
Order:
(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
Agreement.
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
reliability;
(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
telemetering.
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
transmission.
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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