华电技术 ›› 2009, Vol. 31 ›› Issue (11): 69-71.

• 技术交流 • 上一篇    下一篇

一起发电机变压器组保护动作事件分析

张棋1,王欣2   

  1. 1.国电南京自动化股份有限公司,江苏南京 210003;2.华电集团陕西分公司,陕西西安 710032
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2009-11-25 发布日期:2009-11-25

Analysis about an event of protective action of generatortransformer protection

ZHANG Qi1, WANG Xin2   

  1. 1.Guodian Nanjing Automation Corporation Limited, Nanjing 210003, China; 2. Huadian Corporation Shanxi Branch, Xian 710032, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-11-25 Published:2009-11-25

摘要: 以DGT801系列数字式发电机变压器组保护装置在某电厂135MW机组的一次差动保护动作情况为例,分析了此次差动保护动作的原因,根据故障录波数据分析了故障时的动作特性,并针对此次保护动作行为提出了一些建议。

关键词: 发电机变压器组, 差动保护, 故障录波

Abstract: Taking once protective action of differential protection of DGT801 digital generatortransformer protection device in a power plant 135MW unit as example, the reason of protective action of differential protection in this time was analyzed. According to the data of fault record, the action characteristics in the fault process were analyzed, and aiming at the protection action in this event, some suggestions were proposed.

Key words: generator-transformer unit, differential protection, fault record