Under Frequency Load shedding

Because historically load parameters weren't available.

Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376

Load shedding uses multiple parameters, of which frequency is one. As Greg mentioned, actual load values are few and far between when initially setting up a load shed scheme. However, certain large-scale (% of max load) changes are known to disrupt system stability and can thus be coded into the scheme from the outset (for example, a 50% step in total load vs current spinning reserve). Smaller changes will cause frequency perturbations that can be picked up through normal system monitoring.

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