Power system operations and control: Difference between revisions

Revision as of 06:02, 30 May 2022

Revision as of 06:08, 30 May 2022

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The decisions ("[[economic dispatch]]") are based on the '''dispatch curve''', where the X-axis constitutes the system power, intervals for the generation units are placed on this axis in the ''[[merit order]]'' with the interval length corresponding to the maximum power of the unit, Y-axis values represent the marginal cost of a (per-[[MWh]] of electricity, ignoring the startup costs). For cost-based decisions, the units are orderedsorted perby increasing marginal cost (per-MWh, ignoring the startup costs). The graph on the right describes an extremely simplified system, with three committed generator units:<ref name=psu/>

* A can deliver up to 120 MW at the cost of $30 per MWh (from 0 to 120 MW of system power);

* B can deliver up to 80 MW at $60/MWh (from 120 to 200 MW of system power);