华电技术 ›› 2013, Vol. 35 ›› Issue (9): 7-8.

• 专题综述 • 上一篇    下一篇

6kV不接地系统补偿电容器故障原因分析

  

  1. (华电国际邹县发电厂,山东邹城〓273522)
  • 出版日期:2013-09-25 发布日期:2013-10-22

Analysis on reasons of fault of compensation capacitor in 6kV ungrounded system

  1. (Huadian International Zouxian Power Plant, Zoucheng 273522, China)
  • Online:2013-09-25 Published:2013-10-22

摘要: 摘要:华电国际邹县发电厂三期水源地6kV不接地系统在保护检修送电过程中,电压互感器发出零序过压报警,出现了6kV不接地系统各相对地电容不平衡的问题。对故障原因进行了分析,采取有效措施后问题得以解决。

关键词: 关键词:不接地系统, 补偿电容器, 接地保护, 原因分析

Abstract: Abstract:In the 6kV ungrounded system of the water source area of Huadian International Zouxian Power Plant project phase III, when the power supply was switched on after protection overhaul, the voltage transformer gave out a zero sequence over voltage alarm signal, and the each phasetoground capacitors of the 6kV ungrounded system were not balanced. The reasons of the fault were analyzed. The effective measures were adopted, and the problem was solved.

Key words: Key words:ungrounded system, compensation capacitor, ground protection, reason analysis