中国电机工程学报2024，Vol.44Issue(14)：5528-5537,中插7,11.DOI:10.13334/j.0258-8013.pcsee.230267
基于改进凸内逼近法的主动配电网有功-无功协调优化
Active-reactive Power Coordinated Optimization of Active Distribution Network Based on Improved Convex Inner Approximation Method
摘要
Abstract
When distributed power generation,primarily represented by wind and photovoltaic energy,is connected to the distribution network,it tends to exacerbate system voltage fluctuations and readily causes local voltage to exceed permissible limits.In order to ensure the accuracy of the solution after relaxation,the relaxation technique represented by the second-order cone optimization has extremely strict constraints,and the dual gap will become larger under extreme power injection.To solve the above problems,this paper proposes an active-reactive power optimization strategy for active distribution network based on improved convex internal approximation method.First,based on the branch power flow equation,the convex hull of nonlinear terms related to branch current,node voltage and apparent power flow is defined,which is then combined with the remaining linear elements to form convex internal approximation,and a mature mathematical model is established.Furthermore,the network tolerance criterion and the KKT condition are introduced to shrink the dual gap of the optimal solution.Finally,the IEEE 33-node test system and the PG&E 69-node test system are used for simulation calculation,and the output interval of each decision variable in the power grid is obtained by using Yalmip and other platforms,which verifies the stability of optimization,accuracy of relaxation and efficiency of calculation.关键词
分布式电源/凸内逼近/电压/调度区域Key words
distributed generation/convex inner approximation/voltage/optimal dispatch分类
信息技术与安全科学引用本文复制引用
黄永红,王玉祥,孔维健,曹程,苏家宇,王克威..基于改进凸内逼近法的主动配电网有功-无功协调优化[J].中国电机工程学报,2024,44(14):5528-5537,中插7,11.基金项目
江苏省重点研发计划(BE2021094) （BE2021094）
江苏省优势学科建设工程(PAPD) （PAPD）
国网江苏省电力有限公司科技项目(J2020014,J2020151). Key R&D Program of Jiangsu Province(BE2021094) （J2020014,J2020151）
Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD) （PAPD）
Science and Technology Project of State Grid Jiangsu Electric Power Co.,Ltd.(J2020014,J2020151). （J2020014,J2020151）
