In accordance with section 28 and 29 of Electricity Act, 2003 roles and functions
of RLDCs are as under:
i) The RLDCs shall be the Apex Body to ensure integrated operation of power system
in the concerned Region.
ii) The RLDCs shall comply with such principles, guidelines and methodologies in
respect of wheeling and optimum scheduling and despatch of electricity as specified
by the Central Commission in the Grid Code.
iii) The RLDCs shall:
a) be responsible for optimum scheduling and despatch of electricity within the
region in accordance with the contracts entered into with the licensees or the generating
companies operating in the region.
b) monitor grid operations.
c) keep accounts of quantity of electricity transmitted through the regional grid.
d) exercise supervision and control over the inter-State transmission system.
e) be responsible for carrying out real time operation for 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 Grid code.
iv) The RLDCs may give such directions and exercise such supervision and control
as may be required for ensuring stability of the grid operations and for achieving
the maximum economy and efficiency in the operation of the power system in the region
under its control. NRLDC is performing the responsibility of Supervision, monitoring
and control of integrated operation of Northern Regional grid in coordination with
all State power utilities in the Region, Central generating Stations etc. to ensure
stability and security of the grid operation in accordance with IEGC. To aid decision
process RLDC and all SLDCs in the Region are taking support of a modern State of
the art SCADA and communication system set up in NRLDC and all SLDCs to obtain power
system data in real time from all sub-stations and generating stations in the Region.
Energy Management System (EMS) packages i.e. Load / inflow forecasting, resource
scheduling and commitment, State estimation, power flow studies, contingency analysis,
optimal power flow and real time generation application etc. provided along with
the SCADA system enable the system operator at NRLDC in taking the correct decision
in planning contingency handling.
· Coordinating and issuing drawal schedules of State Power Utilities from all Central
Generating Stations and dispatch schedules of Central Generating Stations. For this
the Central Generating Stations declare the availability of their stations one day
in advance to NRLDC who works out and conveys the SLDCs of the State power utilities
their entitlement from Central Generating Stations. The SLDCs, in turn, assess the
demand and availability of the State or DISCOMS, as may be the case, based on States/DISCOMs
generation availability, bilateral agreement etc. and conveys the consolidated requisition
of the State to NRLDC. Accordingly NRLDC issues the final drawal schedule of State
power utilities and dispatch schedule of Central Generating stations for the next
day which becomes the datum for settling the commercial issues.
· Facilitating transactions of power under short-term and long term open access
for inter/intra regional exchanges following regulations and procedures issued by
the Central/State Electricity Regulatory Commission and Central Transmission Utilities.
· The RLDCs of the Region, where point of drawal of electricity is situated, shall
be the Nodal Agency for the short-term transmission access in case of open access
in inter-State transmission.
· Collecting the meter readings from all interconnected / boundary point, central
generating stations, computes the average energy for 15 minutes time block, compares
the deviations from the schedule and computes the unscheduled inter change (UI)
charges for the corresponding time block based on UI rates of average frequency
during the time block.
· Issuing clearance for outage of grid elements for maintenance work.