变电站站用直流系统接地现象及辨识  

Identification of DC System Grounding Fault in Substations

作　　者：李炎 严太山 张昭源 章俊辉 LI Yan;YAN Taishan;ZHANG Zhaoyuan;ZHANG Junhui(State Grid Anhui Ultra High Voltage Company,Hefei 231131,China)

机构地区：[1]国网安徽省电力有限公司超高压分公司,安徽合肥231131

出　　处：《安徽电气工程职业技术学院学报》2023年第2期15-21,共7页Journal of Anhui Electrical Engineering Professional Technique College

摘　　要：文章首先简要分析了直流系统的重要性及发生直流接地的危害,系统地模拟了不同类型直流接地故障,分析了不同类型直流接地故障的异同点。通过对不同类型直流接地的分析,找出辨识接地类型的方法。最后总结了直流接地期间的相关要求,为现场人员提供了有效的直流接地故障排查思路。This paper first gives a brief analysis of the importance of DC system and the harm of DC grounding,simulates various types of DC grounding faults and analyzes the similarities and differences.Through analysis,the paper finds out ways of identifying different types of DC grounding faults.Finally,it summarizes the related requirements during the DC grounding,which provides effective troubleshooting ideas for the field personnel.

关 键 词：直流接地 平衡接地 直流互窜 交流窜入 

分 类 号：TM86[电气工程—高电压与绝缘技术]