浅谈变电站直流系统接地的危害和处理

随着电力系统网络的不断增大,直流系统接地技术日益复杂,其可靠性与安全性受到了研究人员的广泛关注。本文针对直流系统发生一点接地的各种可能性,结合现场实践经验,提出直流接地查找方法和步骤;介绍了变电站直流系统接地故障的查找方法,分析了直流接地系统故障产生的原因及解决方法,并总结了常见直流接地故障的对策,以期为现场检修及维护人员迅速且有效地应对直流系统接地故障提供参考。

Hazards and Handling of Substation DC System Grounding

With the increase of the power system network and the reliability and security of the increasingly complex DC systemgrounding techniques have drawn much attention of the researchers.According to the possibilities of the occurrence of the DC system grounding point,and combined with field experience,the paper puts forward methods and procedures to find a DC ground.The paper also introduces the DC system ground fault to find methods to analyze the causes and solutions of DC grounding system failure,and summarizes the common DC ground solutions to provide reference for the on-site repair and maintenance personnel to respond quickly and effectively to the DC system ground fault.