湖南电力 ›› 2020, Vol. 40 ›› Issue (4): 47-50.doi: 10.3969/j.issn.1008-0198.2020.04.011

• 故障与分析 • 上一篇    下一篇

一起直流系统接线错误引起的接地故障分析

陈瑞珍, 谢智浩, 高体攀, 王晓, 陈智龙   

  1. 国网湖南省电力有限公司检修公司,湖南 长沙 410004
  • 收稿日期:2020-05-11 出版日期:2020-08-25 发布日期:2020-09-30
  • 作者简介:陈瑞珍(1989),男,工程师,从事站用直流电源检修工作。

Analysis of a Grounding Fault Caused by Wiring Error in DC System

CHEN Ruizhen, XIE Zhihao, GAO Tipan, WANG Xiao, CHEN Zhilong   

  1. State Grid Hunan Electric Power Company Limited Maintenance Company, Changsha 410004, China)
  • Received:2020-05-11 Online:2020-08-25 Published:2020-09-30

摘要: 变电站的直流系统为站内保护、信号、控制等装置提供电源,是保障继电保护正确动作的重要部分,直流系统接地可能导致站内保护装置误动,影响电力系统的安全运行。针对某换流站在进行蓄电池组检修时发生的直流母线负极金属性接地现象,分析故障原因,对直流系统的竣工验收、检修工作提出建议。

关键词: 直流系统, 接地, 接线错误

Abstract: The DC system of substation provides reliable power for protection device, signal device and automatic safety device. It is an important factor of relay correct operating and its fault may affect the safe operations of the power system. According to a metallic ground fault DC bus negative pole occured during the repair work of a battery, the fault cause are analyzed, and some suggestions are put forward for the completion acceptance and routine test of DC systems.

Key words: DC power supply system, ground fault, connection error

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