含分布式电源的配电网事故定位方法研究  

Research on Fault Location Method of DG Distribution Network

作　　者：曹越 窦鹏志 原泉 张一博 CAO Yue;DOU Pengzhi;YUAN Quan;ZHANG Yibo(State Grid Dalian Power Supply Company,Dalian,Liaoning 116001,China;State Grid Fushun Power Supply Company,Fushun,Liaoning 113008,China)

机构地区：[1]国网大连供电公司,辽宁大连116001 [2]国网抚顺供电公司,辽宁抚顺113008

出　　处：《东北电力技术》2024年第7期32-37,共6页Northeast Electric Power Technology

摘　　要：配电网线路结构复杂,分布式电源的接入加大了事故定位难度。为解决该问题,将网络进行分层,在现有行波测距定位方法的基础上,利用多端行波信息筛选出重要的波头数据,再将波头时差带入双端测距公式定位事故点。当重要数据缺失、错误及无测量装置安装的分布式电源并网线路发生事故时,依据网络分层原理,利用其他行波波头信息推断出事故点位置。PSCAD/EMTDC仿真结果表明,该方法定位准确,对行波测量信息的容错性强,可为含分布式电源的配电网事故定位方法研究提供参考。The distribution network has a complex line structure,and access to distributed power sources makes it difficult to locate faults.In order to solve the problem,the network topology is layered.Based on the existing traveling wave ranging and locating methods,it uses multi-terminal traveling wave information to filter out important wave head data,and then the wave head time difference is brought into the double-ended ranging formula to locate the fault point.When important data is missing or wrong,and the DG grid-connected line installed without measuring devices fails,according to the principle of network layering,the position of the fault point can be inferred by using other traveling wave head information.The PSCAD/EMTDC simulation results show that the method is accurate in positioning and has a high tolerance for traveling wave measurement information.

关 键 词：配电网 多端信息 行波测距 波头时差 

分 类 号：TM727[电气工程—电力系统及自动化]