华电技术 ›› 2013, Vol. 35 ›› Issue (9): 36-38.

• 技术交流 • 上一篇    下一篇

600MW发电机甩负荷原因分析及措施

  

  1. (构皮滩发电厂,贵州余庆〓564408)
  • 出版日期:2013-09-25 发布日期:2013-10-22

Analysis on reasons of load shedding of 600MW generator and countermeasures 

  1. (Goupitan Hydropower Plant, Yuqing 564408, China)
  • Online:2013-09-25 Published:2013-10-22

摘要: 摘要:构皮滩发电厂 #5发电机保护A,B柜注入式定子接地保护动作跳闸,甩有功负荷527.6MW。对 #5发电机出口B相电压互感器进行了解体试验,查出了电压互感器损坏的是600MW发电机甩负荷的主要原因,提出了相应措施,为处理故障奠定了基础。

关键词: 关键词:注入式定子接地保护, 电压互感器, 匝间短路, 原因分析, 措施

Abstract: Abstract:The source injection type stator grounded fault protection in the protection cabinet A, B of Generator No.5 in Goupitan Hydropower Plant tripped, and this caused active load of the plant 527.6MW to be shed. The Bphase outlet potential transformer of the generator No.5 had been disassembled and tested, and it was found out that the main reason of load shedding of the 600MW generator is the damage of the potential transformer. The relevant countermeasures were proposed, which laid a solid foundation for the fault treatment.

Key words: Key words:source injection type stator grounded fault protection, potential transformer, turntoturn short circuit, reason analysis;measure