ESTABLISHMENT OF ENERGY MANAGEMENT
CENTRE BY NCA
Sardar Sarovar Power Complex
The Power complex of Sardar Sarovar
project (SSP) comprises of two power houses, the Canal Head Power
House (CHPH) having five Units of 50 MW each and the River Bed
Power House (RBPH) with six Units of 200 MW capacity having
reversible features. The Narmada Water Disputes Tribunal (NWDT) in
it’s Award has given detailed instructions regarding the operation
of these Power Houses. The Award stipulates that the power
generated at the SSP complex is to be shared among the three
States of Madhya Pradesh, Maharashtra and Gujarat in the following
Further, Sub clause – 8 under
Clause – 14.9.1 of the Award states as follows:
"The scheme of operation of the
Power House including the power and load required by the party States during different part of the day shall be settled between
the States at least one week before the commencement of every
month and shall not be altered during the month except under
agreement among the States or under emergencies. If and when SSP
complex gets linked with the Regional or national Power Grid, the
operation of the SSP complex will be governed by such altered
system conditions. But in that event, the Narmada Control
Authority should arrange to take such steps as are necessary to
enable the three States of Gujarat, Maharashtra and Madhya Pradesh
to get their entitlement of power and energy from the SSP complex
according to these orders."
Keeping in view the above
stipulations, the Power Sub Committee of NCA in its various
meetings discussed the measures to be adopted to enable NCA to
discharge its statutory responsibility. The sub-Committee after
considering the existing Load Despatch facilities in the Western
Region, decided that an Energy Management Centre (EMC) be
established at Indore, with the facility for real time monitoring
of generation and transmission of power from SSP complex through
Real Time Computer Links with Western Region Load Despatch Centre
(WRLDC) and SSP.
The scheme for establishment of Energy
Management Centre was formulated in consultation with Central
Electricity Authority. The scheme provides for installation of
Micro Processor based Remote Terminal Units (RTUs) at CHPH and
RBPH. These RTUs will continuously monitor generation and
transmission of Power from SSP as well as the frequency and
voltage at CHPH and RBPH buses.
The PC based Supervisory Control and
Data Acquisition System (SCADA) installed at EMC, Indore, will
display the data received from WRLDC, Mumbai. The following
functions will be performed in EMC at Indore.
Front view of Energy Management Centre
Since the RBPH Units will be operating
in generating as well as pumping modes, monitoring of power flow
has to be done in both the directions with facility to record
energy transactions with reference to time.
- Monitoring of generation of power
at CHPH and RBPH.
- Allocation of power generated at
SSP among the participating states.
- Monitoring of withdrawal of power by
participating States according to the allocation made above.
- Scheduling of generation at CHPH
and RBPH considering the water to be released in the Canal,
inflows into the Sardar Sarovar as informed by Hydromet Group of
office and anticipated power requirement as assessed by WRLDC.
- Energy accounting in respect of
withdrawal of energy by beneficiary States against their share.
- Scheduling of periodic maintenance
of generating units at SSP and transmission lines emanating from
To facilitate this, sophisticated Electronics Time of Day (TOD) meters are to be installed at SSP under the EMC scheme. These
meters will record energy transmission to various states in the
time blocks of fifteen minutes and transmit the same to EMC,
The infrastructure for housing the SCADA equipment (e.g.
air-conditioning, UPS etc.) has been installed in EMC. The
installation of RTUs/SCADA equipment is in progress at various
sites. The EMC is expected to be operational by the time the first
unit of SSP is synchronised.
(Click to view the communication line diagram)