小电流接地系统两点异相接地案例分析  

Analysis of Two-point Out-of-phase Grounding Case of Small Current Grounding System

作　　者：秦海停 曲文浩 刘盼锋 Qin Hai-ting;Qu Wen-hao;Liu Pan-feng

机构地区：[1]深能南京能源控股有限公司,江苏南京210000

出　　处：《电力系统装备》2022年第11期135-137,共3页Electric Power System Equipment

摘　　要：电力系统发生的故障类型较多,危害比较严重的常见类型有短路故障、断相故障以及各种复杂故障。而如何对系统故障进行分析,正确并快速地判断故障类型及位置是对每一个从事继电保护工作者的重要技能要求,掌握常见故障类型的分析方法有助于正确分析事故原因、评价继电保护动作行为、发现一二次缺陷后采取措施及时处理并有效防范。文章以一起小电流接地系统发生两点接地的复故障为例,结合故障波形及保护动作情况作故障分析。There are many types of faults in the power system,and the common types of serious damage are short-circuit faults,open-phase faults and various complex faults.How to analyze system faults and correctly and quickly determine the type and location of faults is an important skill requirement for every worker engaged in relay protection.Mastering the analysis methods of common fault types helps us to correctly analyze the cause of the accident and evaluate the relay protection.Electric protection action behaviors,find primary and secondary defects and take measures to deal with them in time and effectively prevent them.This paper takes a complex fault with two-point grounding in a small-current grounding system as an example,and analyzes the fault based on the fault waveform and protection action.

关 键 词：小电流接地系统 两点接地 复故障 

分 类 号：TM862[电气工程—高电压与绝缘技术]