中国电机工程学报2024，Vol.44Issue(6)：2197-2207,后插9,12.DOI:10.13334/j.0258-8013.pcsee.232076
基于迭代隐式线性化的网状配电网潮流计算及其最优潮流模型
Iterative Implicit Linearization Based Power Flow Calculation and Optimal Power Flow Model for Meshed Distribution Networks
摘要
Abstract
With the increase of distributed energy and energy storage capacity and the popularization of electric vehicles,the power flow in the distribution network has changed from unidirectional to bidirectional,and the network topology has changed from a radial structure to a complex meshed structure.In order to efficiently deal with the power flow(PF)analysis and optimal PF(OPF)problems of meshed distribution networks,as well as to further improve the approximation accuracy of the existing linearization models and to refine the linear approximation of network losses,this paper constructs an iterative implicit linearization PF model(IIL-PF)and its optimal PF model(IIL-OPF).The proposed model considers the nonlinear PF manifold M as an implicit algebraic relationship between the node voltages and the nodal power injections,after which M is locally approximated using the tangent plane,and the linearization points are iteratively updated to improve the approximation accuracy of the linear model.In addition,the proposed model considers the branch start/end PF,the squared PF,and the line losses,and derives an explicit linearization for them.Finally,based on the modified IEEE 33 system in radial and meshed operation modes,respectively,it is verified that the proposed model can converge quickly and has high approximation accuracy.The results of IIL-PF,objective function of IIL-OPF and generator power are within 1％error compared with MATPOWER's nonlinear models,so the proposed model can meet the requirements of engineering planning or day-ahead operation simulation.关键词
配电网/网状拓扑/潮流计算/最优潮流/隐式线性化Key words
distribution network/meshed topology/power flow calculation/optimal power flow/implicit linearization分类
信息技术与安全科学引用本文复制引用
赵飞,樊雪君,李亚楼,张健,吴俊玲,张文杰..基于迭代隐式线性化的网状配电网潮流计算及其最优潮流模型[J].中国电机工程学报,2024,44(6):2197-2207,后插9,12.基金项目
国家自然科学基金项目(U2166211).Project Supported by National Natural Science Foundation of China(U2166211). （U2166211）
