含分布式电源的复杂配电网相间故障定位等效解耦模型  

An Equivalent Decoupling Model for Fault Location in Complex Distribution Network with Distributed Generation

作　　者：白星振 宋昭杉 葛磊蛟[2] 张波[3] 朱爱莲 牛峰[5] BAI Xingzhen;SONG Zhaoshan;GE Leijiao;ZHANG Bo;ZHU Ailian;NIU Feng(School of Electrical and Engineering,Shandong University of Science and Technology,Qingdao 266590,Shandong Province,China;Key Laboratory of Smart Grid of Ministry of Education(Tianjin University),Tianjin 300072,China;32654 PLA Troops,Jinan 250024,China;Qingdao Longfa Thermal Company Limited,Qingdao 266317,Shandong Province,China;State Key Laboratory of Reliability and Intelligence of Electrical Equipment(Hebei University of Technology),Tianjin 300130,China)

机构地区：[1]山东科技大学电气与自动化工程学院,山东省青岛市266590 [2]智能电网教育部重点实验室(天津大学),天津市300072 [3]中国人民解放军32654部队,济南市250024 [4]青岛龙发热电有限公司,山东省青岛市266317 [5]省部共建电工装备可靠性与智能化国家重点实验室(河北工业大学),天津市300130

出　　处：《电力建设》2022年第2期45-53,共9页Electric Power Construction

基　　金：国家自然科学基金资助项目(51807134);省部共建电工装备可靠性与智能化国家重点实验室(河北工业大学)开放课题基金资助项目(EERI_KF20200014)。

摘　　要：分布式电源规模化接入,使配电网拓扑结构和组成元素越来越复杂,传统矩阵算法由于馈线开关处故障电流方向难以确定已不再适用于配电网相间故障定位。为有效将复杂配电网的拓扑结构简化,基于深度优先原则对配电网进行解耦,使其变成由若干个树干状结构组成的网络;针对复杂配电网故障定位矩阵算法计算量大、步骤复杂的难题,提出了一种新的复杂配电网故障定位矩阵算法,与传统矩阵算法相比,该方法对配电网T型区段及末梢区段故障的定位更加精确。最后,通过典型园区配电网模型与改进的IEEE 33系统案例,验证了所提方法既能实现配电网的故障定位,又能简化复杂配电网结构,与以往的行波法相比,文章提出的方法缩短了定位时间,具有较好的工程应用价值。Since distributed power supply is connected to distribution networks on a large scale,its topology and components are becoming more and more complex.As the direction of fault current at feeder switches is difficult to determine,a new matrix algorithm for equivalent decoupling fault location in complex distribution networks is proposed in this paper.In order to simplify the topology of complex distribution network effectively,the distribution network is decoupled according to the principle of depth priority to make it a network composed of tree trunks.A new fault-location matrix algorithm for complex distribution network is presented to solve the problem of large computation and complex steps in fault-location matrix algorithm for complex distribution network.Compared with traditional matrix algorithm,this method is more accurate for T-section and terminal section of power network fault location.Finally,through the typical park distribution network model and the improved IEEE 33-node system case,the method proposed in this paper can not only locate the faults in the distribution network,but also simplify the complex distribution network structure.Compared with the traveling wave method,the proposed method shortens the locating time and has better application value.

关 键 词：分布式电源 复杂配电网 故障定位 矩阵算法 等效解耦 

分 类 号：TM771[电气工程—电力系统及自动化]