Comparison of all-side risk and down-side risk constrained probabilistic dispatch models considering wind power

[摘要] This paper, for the first time, compares the probabilistic optimal power flow (POPF) models targetingdifferent objectives - minimizing the expected generation cost (EGC) and all-side risk (AR) or down side risk (DR)simultaneously. In the POPF models, wind power generation isconsidered in dispatching, the uncertainty of which can be explained by building a model to describe the stochasticcharacteristic of the forecast error. The distribution of the forecast error can be obtained by sampling from the historical error time series. The POPFsaresolvedusinggroup search optimizer with multiple producers (GSOMP), and a decision-making method TOPSIS is used to select the most suitablesolution. Simulation studies are conducted on a modified IEEE 118-bus power system with wind farms integrated, and the results show that the EGC-DR modelfind better solution compared tothe EGC-AR model.

[发布机构] School of Electric Power Engineering, South China University of Technology, Guangzhou; 510641, China^1

[效力级别] 电工学

[关键词] Decision-making method;Error time series;Forecast errors;Generation cost;Power System;Probabilistic optimal power flow (P-OPF);Search optimizer;Simulation studies