Load-shedding is an emergency procedure triggered by the grid manager following an incident or supply breakdown on the transport grid.
The aim is to maintain continuity of service to priority customers by restricting or interrupting the supply to certain other connected customers or distribution grids, in accordance with the general principles described below.
Load-shedding may affect the whole TIGF area, or just one local area, depending upon the cause and location of the incident.
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Principles of load-shedding
General principles governing load-shedding operations
The general effectiveness criterion:
- For maximum impact in a minimum amount of time, the load-shedding plan will target as a priority those delivery points which place the highest demands in terms of pressure and flow on the grid.
The grid manager will select their restriction or interruption actions at delivery points in the following order:
- interruption of the interruptible part of capacities for direct customers on the TIGF grid and distribution grids;
- restriction of the fixed part of capacities for direct customers on the TIGF grid and distribution grids up to their technical minimum (excluding MIG sites (public interest activities));
- complete interruption for all direct customers on the TIGF grid and distribution grids (excluding MIG sites);
- progressive interruption of TIGF’s MIG sites, distribution and domestic distribution customers.
Load-shedding questionnaire
CTG’s workgroup 3 is looking into the problems of load-shedding and has prepared a questionnaire about the issue for industry.
To find out more:
