Presentation on theme: "FREQUENCY SPECTRUM FROM AUGUST 06 TO OCT 06 (UPTO 20 TH OCT 06) < 49.0 HZ< 49.5 HZ< 50.0 HZ49 - 50.5 HZ>50.2HZ>50.5 HZ Aug-06 0.376.9334.8299.2222.750.41."— Presentation transcript:
FREQUENCY SPECTRUM FROM AUGUST 06 TO OCT 06 (UPTO 20 TH OCT 06) < 49.0 HZ< 49.5 HZ< 50.0 HZ49 - 50.5 HZ>50.2HZ>50.5 HZ Aug-06 0.376.9334.8299.2222.750.41 Sep-06 1.3829.6263.9598.6112.270.02 Oct-06 (upto 20 th ) 10.5444.7483.4289.472.660.02
AVAILABILTY OF GENERATION IN NLC AND NPC STATIONS NLC TS IINLC TPS I EXP NPC, MAPSNPC, KAPS
Date: 17th October 2006 PRESS RELEASE CERC directs PowerGrid to ensure grid stability 1. In order to take action for violating the Indian Electricity Grid Code (IEGC) by drawing electricity in excess of their schedule drawal, the Central Electricity Regulatory Commission (CERC) has directed PowerGrid to furnish the list of States and their quantum of overdrawals in the time-blocks when the frequency in the extended Central Grid was below 49.0 Hz during the period 9th to 15 th October 2006. 2. The Commission has further directed all the RLDCs to keep a strict watch over the Grid Code violations, which can possibly endanger the grid stability and promptly inform the Commission about the defaulters with appropriate recommendation regarding remedial action. 3. The maintenance of satisfactory grid frequency has assumed added importance after synchronization of Northern Regional Grid with Central Grid comprising Western, Eastern and North-Eastern Regional Grids. In this context, the IEGC requires that the various beneficiary States shall always endeavor to restrict their net drawal from the grid to their respective drawal schedules, whenever the system frequency is below 49.5 Hz and when the frequency falls below 49.0 Hz, the requisite load shedding shall be carried out by the concerned State to curtail its over drawal. S. K. Chatterjee Assistant Secretary
STATE No. of Time Blocks for which State overdrew below 49 Hz. MWH Overdrawal below 49 Hz Average MW overdrawn below 49 Hz TAMILNADU 1107146260 KARNATAKA 703351191 ANDHRA PRADESH 531782134 PUDUCHERRY 109143953 GOA 8631415 KERALA 000 SUMMARY OF SOUTHERN GRID DURING THE WEEK 09-10-06 TO 15-10-06 SUMMARY OF SOUTHERN GRID DURING THE WEEK 16-10-06 TO 22-10-06 STATE No. of Time Blocks for which State overdrew below 49 Hz. MWH Overdrawal below 49 Hz Average MW overdrawn below 49 Hz TAMILNADU 1082976110 KARNATAKA 1052856109 ANDHRA PRADESH 521663128 PUDUCHERRY 139110132 GOA 10745817 KERALA 1925453
STATE No. of Time Blocks for which State overdrew below 49 Hz. MWH Overdrawal below 49 Hz Average MW overdrawn below 49 Hz TAMILNADU 5494718 KARNATAKA 123657753 ANDHRA PRADESH 42144334 PUDUCHERRY 1206956 GOA 44852 KERALA 2528011 SUMMARY OF SOUTHERN GRID DURING THE WEEK 23-10-06 TO 29-10-06
Message TypeBrief Details Type ACaution Message when constituent overdraws at frequency <49.2 Hz. (issued in line with IEGC clause 6.4.4) Type BViolation Message when constituent overdraws at frequency <49 Hz. (issued in line with IEGC clause 6.4.4) Type CViolation Message when constituent continues to overdraw at frequency <49.0 Hz., in spite of RLDC’s instruction to terminate the over drawal (issued in line with IEGC clause 6.4.9 and Section 29(2) of I.E. Act 2003)
ACTION PLAN TO CONTROL LOW FREQUENCY OF OPERATION ALL ISGS TO MAXIMISE THE GENERATION IN CASE OF SHORTAGES THE STATE’S OWN AND EMBEDDED GENERATION TO BE OPTIMISED FOR MEETING THE STATES DEMAND DESPATCH INSTRUCTIONS TO BE GIVEN TO ALL THE UNREQUISIONED IPPs IN THE OVER DRAWING STATE AVAILABILITY OF GENERATION TO BE MAXIMISED BY ALL POSSIBLE IMPORTS THROUGH STOAs ACTION FOR LOAD SHEDDING IS TO BE CARRIED BY OVER DRAWING STATES AT 49.2 Hz.