王荣滔,潘中达
WANG Rong-tao,PAN Zhong-da(Wenzhou Electric Power Bureau

• 1:温州电力局

摘要(Abstract)：

通过对直流双重化系统中发生接地故障,并引发继电保护装置不正确动作的案例分析,阐述双重化直流系统中直流绝缘接地巡检的配置和工作原理,分析直流接地检测配置不当对继电保护安全性产生的影响,并提出合理的解决方案。
By case study of grounding fault in double DC system which results in incorrect operation of protective relay devices,the paper expounds configuration and working principle of polling of DC insulation grounding in double DC system;it analyzes hazards to safety of protective relay due to incorrect direct current earth detection configuration and proposes reasonable solutions.

关键词(KeyWords)： 变电站;直流系统;二次系统;接地;绝缘;检测
substation;DC system;secondary system;grounding;insulation;detection

Abstract:

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基金项目(Foundation):

作者(Author): 王荣滔,潘中达
WANG Rong-tao,PAN Zhong-da(Wenzhou Electric Power Bureau

DOI: 10.19585/j.zjdl.2013.02.008

参考文献(References)：

• 张毅,张泉,李永丽.直流系统接地检测[J].电力系统及其自动化学报,2005,2(1):27-30.