Decoupled Piecewise Linear Power Flow and Its Application to Under Voltage Load Shedding

作     者：Mang Jiang Qinglai Guo Hongbin Sun Huaichang Ge Mang Jiang;Qinglai Guo;Hongbin Sun;Huaichang Ge

作者机构：Department of Electrical EngineeringState Key Laboratory of Power Systems.Tsinghua UniversityBeijing 100084.China. 

出 版 物：《CSEE Journal of Power and Energy Systems》 (中国电机工程学会电力与能源系统学报（英文）)

年 卷 期：2021年第7卷第5期

页      面：976-985页

核心收录：

学科分类：080802[工学-电力系统及其自动化] 0808[工学-电气工程] 08[工学] 

基　　金：supported by China Postdoctoral Science Foundation(2020M670325) 

主　　题：Integer programming piecewise linearization power flow modeling under voltage load shedding 

摘      要：Various optimizations in power systems based on the AC power flow model are inherently mixed-integer nonlinear programming(MINLP)*** linear power flow models can handle nonlinearities and meanwhile ensure a hi^h ***,the MINLP problem can he turned into a tractable mixed-integer linear programming(MILP)***,piecewise linearization also introduces a heavy computational burden because of the incorporation of a large number of binary variables especially for large *** achieve a better trade off between approximation accuracy and computational efficiency,this paper proposes a model called decoupled piecewise linear power flow(DPWLPF)for transmission *** P-Q decoupling characteristic is used to ease the evaluation of the piecewise cosine functions in the power flow ***,in optimizations,the coupling between variables is ***,an under voltage load shedding(UVLS)approach based on DPWLPF is *** studies are conducted for benchmark *** results show that the DPWLPF facilitates the solution of optimal power flow(OPF)and UVLS problems much better than conventional piecewise *** DPWIJM^still enhances the approximation accuracy by usinj»the decoupled piecewise modeling.