变电站直流系统接地故障原因及对策  

Cause and Countermeasure for Grounding Fault of Substation DC System

作　　者：路欣怡 倪一洋 LU Xinyi;NI Yiyang(Suzhou Power Supply Branch of State Grid Jiangsu Electric Power Co.,Ltd.,Suzhou 215000,Jiangsu,China)

机构地区：[1]国网江苏省电力有限公司苏州供电分公司,江苏苏州215000

出　　处：《工程技术研究》2024年第18期219-221,共3页Engineering and Technological Research

摘　　要：变电站直流系统一般由直流母线、充电装置和蓄电池等部分组成,作为变电站内保护、测控装置、断路器控制电源等的重要负载电源,直流系统对变电站的安全稳定运行起着十分重要的作用。直流系统接地故障是变电站常见的故障类型,对变电站一次设备的可靠运行有严重危害。文章首先对变电站直流系统接地故障的类型与原因进行分析,介绍了几种变电站直流系统接地故障的判断方法,并提出了变电站直流系统接地故障的对策,旨在为变电站直流系统的稳定运行提供可靠的支持与保障。The DC system of substation is generally composed of DC bus,charging device and battery.As an important load power source for protection,measurement and control device,circuit breaker control power source in substations,DC system plays a very important role in the safe and stable operation of the substation.Grounding fault of DC system is a common fault type in substations,which has serious harm to the reliable operation of primary equipment in substations.This paper first analyzes the types and causes of DC system grounding faults in substations,introduces several methods for judging DC system grounding faults in substations,and puts forward countermeasures of DC system grounding faults in substations,aiming at providing reliable support and guarantee for the stable operation of substation DC system.

关 键 词：变电站直流系统 接地故障 电源互串接地 分支接地故障 

分 类 号：TM63[电气工程—电力系统及自动化] TM862