Power System Operation Corporation Ltd. 
             (A Government of India Enterprise)                  
 POSOCO   Southern Regional Load Despatch Centre
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Role Of SRLDC...
  • SRLDC is performing the responsibility of Supervision, monitoring and control of integrated operation of Southern 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 SRLDC 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 SRLDC 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 SRLDC 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 SRLDC.    Accordingly SRLDC 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.

Reliability, Security and Economy in Power Transmission
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