华电技术 ›› 2013, Vol. 35 ›› Issue (9): 39-40.

• 技术交流 • 上一篇    下一篇

600MW机组REG670转子接地保护误动原因分析

  

  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 incorrect tripping of 600 MW unit REG670 rotator grounding protection

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

摘要: 摘要:针对华电国际邹县发电厂600MW机组REG670转子接地保护误动的问题进行了分析,排除了谐波产生误动的可能性,得出误动原因为REG670用于转子接地保护功能的模拟量电流通道额定值为5A,提出了REG670转子接地保护误动的解决办法。

关键词: 关键词:转子, 接地保护, 误动, 解决办法

Abstract: Abstract:The incorrect tripping problem of REG670 rotator grounding protection of 600MW unit in Huadian International Zouxian Power Plant was analyzed. It was excluded that the incorrect tripping may be caused by harmonic, and the actual reason of incorrect tripping was found, which is that the rated value of the analog current channel of REG670 for rotator grounding protection is selected to be 5A. The solving methods of the incorrect tripping of REG670 rotator grounding protection were proposed.

Key words: Key words:rotator, grounding protection, incorrect tripping, solving method