一起典型的特高压高阻接地故障分析及处理  

An analysis and processing of typical UHV high resistance grounding fault

作　　者：倪腊琴 李济沅 龚仁敏 刘虎林 李莎[2] 周浩[2] Ni Laqin;Li Jiyuan;Gong Renmin;Liu Hulin;Li Sha;Zhou Hao(East China Grid Co.,Ltd.,Shanghai 200120,China;School of Electrical Engineering,Zhejiang University,Hangzhou 310027,China;Beijing ZhonHen JoinBright Digital Electrical Technology Company Limited,Beijing 100085,China)

机构地区：[1]国家电网有限公司华东分部,上海200120 [2]浙江大学电气工程学院,杭州310027 [3]北京中恒博瑞数字电力科技有限公司,北京100085

出　　处：《电测与仪表》2020年第20期67-72,89,共7页Electrical Measurement & Instrumentation

基　　金：国家重点基础研究发展计划(973计划)(2011CB209405)。

摘　　要：通过对一起特高压交流系统中高阻接地故障的分析,有效辨别出两故障点是各自独立故障还是一起发展性故障,并且对保护装置动作过程进行详细分析,证明该合闸电阻继电保护配置及整定配合方案的合理性及可靠性,对类似故障的分析处理提供参考价值,对特高压合闸电阻继电保护设计具有借鉴意义。This paper analyzes a UHV high resistance grounding fault happened in UHV AC system,and distinguishes the type of two fault points between separate fault and developing fault.Moreover,the action course of relay protection equipment is analyzed in detail,which proves the rationality and reliability of the relay protection disposition and settings for closing resistance applied currently.This paper provides references for the analysis and processing of similar faults,and it is also valuable for closing resistance relay protection designing.

关 键 词：特高压 继电保护 高电阻接地故障 故障分析 合闸电阻 

分 类 号：TM93[电气工程—电力电子与电力传动]