华电技术 ›› 2013, Vol. 35 ›› Issue (9): 1-3.

• 专题综述 •    下一篇

110V直流电源中断引起开关跳闸原因分析

  

  1. (中国华电集团贵港发电有限公司,广西贵港〓537138)
  • 出版日期:2013-09-25 发布日期:2013-10-22

Analysis on reasons of switch tripping caused by interrupt of 110V DC power source

  1. (Guigang Power Generation Company Limited, China Huadian Corporation, Guigang 537138, China)
  • Online:2013-09-25 Published:2013-10-22

摘要:

摘要:一次110V直流控制电源异常引起保安PC段母线备用电源开关跳闸,对母线失压的原因进行了分析,发现该系统在设计和选型方面存在许多问题,提出了解决方案,彻底消除了因直流电源消失而造成的下级开关误动的问题。

关键词: 关键词:110V直流电源失电, 开关跳闸, 母线失压, 原因分析, 解决方案

Abstract:

Abstract:Once, an abnormal condition of 110V DC control power source caused the switch of the standby power source of PC bus of emergency power supply to trip. The reason of the bus voltage failure was analyzed, and it was found that there are many problems in the system design and device selection of the system. The solution was put forward, and the problem, which is that the DC power supply failure causes the switch in lower level to trip incorrectly, was solved thoroughly.

Key words: Key words:interrupt of 110V DC power source, switch trip, disappearance of bus voltage, reason analysis, solution