华电技术 ›› 2011, Vol. 33 ›› Issue (8): 27-29.

• 技术交流 • 上一篇    下一篇

3/2接线方式下“500kV开关断开全停”保护误动分析与改进

王东亚, 林韶明   

  1. 广东珠海金湾发电有限公司设备部,广东珠海519000
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-08-25 发布日期:2011-08-25

Analysis and improvement of malfunction of protection 'all stopping when 500kV switch tripped' under 3/2 connection mode

WANG Dongya,LIN Shaoming   

  1. Guangdong Zhuhai Jinwan Power Generation Company Limited, Zhuhai 519000, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-08-25 Published:2011-08-25

摘要: 广东珠海金湾发电有限公司电机变压器组保护装置在进行G60装置试验时,发现装置所配置的“500kV开关断开全停”保护误动作。经过深入分析认为,发电机变压器组保护装置保护误动作是产生故障的主要原因,提出了保护逻辑的改进方法,避免了保护误动作再次发生,消除了发电机变压器组保护的重大隐患。

关键词: 发电机变压器组, 保护误动作, G60装置, 原因分析, 保护逻辑改进

Abstract: In the Guangdong Zhuhai Jinwan Power Generation Company Limited, during the test of the generatortransformer unit protection device G60, it was found that the protection 'all stopping when 500kV switch tripped' configured in the protection device acted incorrectly. Based on indepth analysis, it was considered that the main reason of the fault is the malfunction of the generatortransformer unit protection device. The improvement method of the protection logic was put forward; the protection malfunction happening again was avoided, and a serious hidden danger of the generatortransformer unit protection device was eliminated.

Key words: generator-transformer unit, malfunction of protection, G60 device, reason analysis, improvement of protective logic