基于多源信息的配网单相接地定位研究与应用  

Applicative Practice in Locating Single-phase Grounding Faults in Distribution Networks Utilizing Multi-source Information

作　　者：周万鹏 沈立 张利敏 罗嘉良 吴嵩 ZHOU Wanpeng;SHEN Li;ZHANG Limin;LUO Jialiang;WU Song(State Grid Zhejiang Electric Power Co.,Ltd.Jiaxing Power Supply Company,Jiaxing 314000,China)

机构地区：[1]国网浙江省电力有限公司嘉兴供电公司,浙江嘉兴314000

出　　处：《电工技术》2024年第12期143-146,共4页Electric Engineering

基　　金：国网浙江省电力有限公司科技项目(编号5211JX230-00T)。

摘　　要：针对配网单相接地故障区段定位困难问题,通过理论分析提出了基于相电流、零序电流突变的研判方法。利用不同配电自动化终端的采样特性,综合多设备的遥测量,实现配网线路单相接地的精准定位。将相关方法应用于配网单相接地故障研判,在不增加监测装置的条件下有效提升了故障处置效率,结果验证了所提故障定位方法原理简单、定位速度快、准确率高。In view of the difficulty in locating single-phase grounding sections in distribution networks,there has emerged an theoretically proposed idea of realizing fault location based on sudden changes in phase current and zero sequence current,whose effectiveness and utility were analyzed in the present work.By utilizing the sampling characteristics of different distribution automation terminals and integrating remote measurement of multiple devices,this work made an attempt aiming at precise location of single-phase grounding faults.In the applicative practice of the method,fault handling efficiency was effectively improved without adding monitoring devices,indicating its merits including principle simplicity,fast location speed,and high accuracy.

关 键 词：配网单相接地定位 故障指示器 配电自动化终端 智能开关 

分 类 号：TM76[电气工程—电力系统及自动化]