Day-ahead power generation plan optimization method considering thermal power uncertainty and risk measurement

Abstract

The invention discloses a day-ahead power generation plan optimization method considering thermal power uncertainty and risk measurement. The day-ahead power generation plan optimization method comprises the following steps: constructing a thermal power generating unit output uncertainty constraint; constructing a two-stage day-ahead power generation plan optimization model; the wind-light and thermal power output uncertain constraint is solved, and uncertain scene generation including wind-light uncertain scene and thermal power output uncertain scene generation and reduction is carried out; and solving the two-stage day-ahead power generation plan optimization model to obtain an optimal unit combination start-stop state and an output plan. According to the method, output uncertainty of renewable energy and a thermal power generating unit is fully considered, a thermal power generating unit output uncertainty constraint is constructed, an optimization model based on unit combination and standby decision is constructed, risk loss measurement is further combined, joint optimization is carried out on the optimization model, and the reliability of the optimization model is improved. And finally obtaining a day-ahead power generation plan which better meets the intrinsic safety requirement of the novel power system.

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