电力系统中变电站直流系统接地故障分析  

Analysis of Grounding Faults in Substation DC System in Power System

作　　者：戴宇 廖颖欢 陈婷 黄端华 方德 DAI Yu;LIAO Yinghuan;CHEN Ting;HUANG Duanhua;FANG De

机构地区：[1]广东电网有限责任公司湛江供电局,广东湛江524000

出　　处：《今日自动化》2023年第9期34-36,共3页Automation Today

摘　　要：变电站在整个电力系统中均有着不可替代的作用,是维持供电安全稳定的重要因素。在变电站运行过程中,直流系统起到了至关重要的作用,一旦其发生接地故障,将会导致控制回路、信号回路、继电保护及自动装置回路误动作,极大影响了供电安全性,因此必须要在短时间内进行准确定位,判断故障原因并采取针对性措施进行处理,避免造成更大的影响。文章从变电站直流系统接地类型出发,对常见的接地故障及故障定位技术进行了分析总结,重点对接地故障处理方法进行了探讨。Substations play an irreplaceable role in the entire power system and are an important factor in maintaining power supply safety and stability.During the operation of the substation,the DC system plays a crucial role.If a ground fault occurs,it will cause misoperation of the control circuit,signal circuit,relay protection,and automatic device circuit,greatly affecting the safety of power supply.Therefore,it is necessary to accurately locate the fault in a short period of time,determine the cause of the fault,and take targeted measures to solve the problem,avoiding greater impact.This article analyzes and summarizes common grounding faults and fault location techniques based on the types of grounding in the DC system of substations,and focuses on exploring methods for handling grounding faults.

关 键 词：电力系统 变电站 直流系统 接地故障 定位 

分 类 号：TM862[电气工程—高电压与绝缘技术]