Stochastic Unit Commitment of Power Systems Considering Wind Power Uncertainty
Stochastic unit commitment considering the uncertainty of wind power is very important for the safe and stable operation of power systems.In view of the influence of wind power uncertainty,this paper proposes a unit commitment model including wind power uncertainty.Firstly,wind power scenario generation is introduced.Copula function is used to generate wind power output scenarios,and K-Means clustering algorithm is used to cluster scenario data to obtain typical wind power output scenario.Secondly,a stochastic unit commitment model is proposed.Based on the generated wind pow-er scenario data,the total operating cost of the unit is minimized,and constraints such as conventional power unit con-straints and power balance constraints are considered.Finally,a numerical example analysis is carried out,and the results verify that the proposed model can arrange the unit combination strategy according to different wind power scenarios,min-imize the operational costs,and can reasonably arrange the unit start-stop and output conditions,and improve the econo-my and stability of the system.
万方数据
维普
