解决变电站室外直流接地的措施

华电技术 ›› 2012, Vol. 34 ›› Issue (8): 40-41.

解决变电站室外直流接地的措施

林望青

汕头供电局，广东汕头515041

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2012-08-25

Measures for solving problem of outdoor DC grounding in substation

LIN Wangqing

Shantou Power Supply Bureau, Shantou 515041, China

Received:1900-01-01 Revised:1900-01-01 Published:2012-08-25

摘要/Abstract

摘要：

220kV及以上的变电站室外设备，不可避免地存在着直流接地的现象。根据相关案例，总结了接地类型，分析了接地原因。针对这些情况，提出了改进措施，在实践中保证

了设备的安全、稳定运行。

关键词: 直流接地, 刀闸辅助接点, 温度计接点, 解决措施

Abstract:

The DC grounding faults exist in the outdoor equipments of 220kV and higher voltage grade substations inevitably. According to relevant examples,

the types of the grounding fault were summarized. The reasons of the grounding faults were analyzed. Aiming at the grounding faults, the improvement measures

were proposed; and the safe and stable operation of the equipments were ensured in practice.

Key words: DC grounding, auxiliary contact of isolating switch, temperature meter contact, solving measure

林望青. 解决变电站室外直流接地的措施[J]. 华电技术, 2012, 34(8): 40-41.

LIN Wangqing. Measures for solving problem of outdoor DC grounding in substation[J]. Huadian Technology, 2012, 34(8): 40-41.

[1]	巩芳杰. 机组无保护动作跳机的原因分析及处理[J]. 华电技术, 2012, 34(9): 59-61.
[2]	仲继克. 影响澄清池出水水质的原因及解决措施[J]. 华电技术, 2010, 32(1): 12-15.
[3]	林福海;王万明;翟雷. 1000MW机组低负荷凝结水溶氧超标的治理[J]. 华电技术, 2009, 31(11): 47-49.
[4]	陈孝安. 1000MW机组锅炉结焦原因分析及预防措施[J]. 华电技术, 2009, 31(11): 26-29.
[5]	李润平;温泉 . 直流系统接地故障的分析[J]. 华电技术, 2008, 30(2): 58-61.