中国电机工程学报2024，Vol.44Issue(11)：4210-4226,中插4,18.DOI:10.13334/j.0258-8013.pcsee.222337
主动配电网潮流的全纯嵌入计算方法
A Holomorphic Embedding Power Flow Algorithm for Active Distribution Network
摘要
Abstract
Power flow(PF)calculation plays a critical role in active distribution network(ADN)planning and operation.The existing Newton Raphson(NR)and forward backward substitution(FBS)methods can solve the PF of ADN,but they may fail in convergence and computational efficiency.The holomorphic embedding method(HEM),as a novel PF method,can effectively avoid the above problems,but the existing HEM does not fully consider the different types of distributed generation(DG),the diversity of the control modes of soft open point(SOP),or the voltage and frequency characteristics of the loads.This poses a challenge in resolving PF of ADN under different operating modes.Aiming at the above problems,this paper firstly proposes a unified HEM for ADN,which can solve PF of ADN including multiple types of DG,SOP and operating in grid-connected or islanded mode.Next,according to the static voltage and frequency characteristics of the load,HE PF models of the loads are constructed.Then,according to different grid connection methods of DG and the different operation modes of ADN,DG is equivalent to different types of buses,and HE PF models of various DG are formed.Further,considering the different control modes of SOP,HE PF models of SOP are formulated.According to the principle that the same power coefficient is equal,the holomorphic functions are solved to get the recursive relationship,which is used to solve each power coefficient.Meanwhile,the approximation values of voltage,frequency and reactive power are obtained by using the analytical continuation to realize the accurate PF solution of ADN.Finally,the accuracy and effectiveness of the proposed method are validated by using the modified IEEE 33-bus and IEEE 123-bus test systems.关键词
全纯嵌入法(HEM)/潮流计算/主动配电网(ADN)/分布式电源(DG)/智能软开关(SOP)Key words
holomorphic embedding method(HEM)/power flow calculation/active distribution network(ADN)/distributed generation(DG)/soft open point(SOP)分类
信息技术与安全科学引用本文复制引用
李雪,李博,姜涛,陈厚合,李国庆..主动配电网潮流的全纯嵌入计算方法[J].中国电机工程学报,2024,44(11):4210-4226,中插4,18.基金项目
国家自然科学基金项目(52077029,U2066208). Project Supported by National Natural Science Foundation of China(52077029,U2066208). （52077029,U2066208）
