华电技术 ›› 2014, Vol. 36 ›› Issue (10): 40-42.

• 技术交流 • 上一篇    下一篇

一起发电机定子接地保护跳机原因分析及对策

  

  1. (四川广安发电有限责任公司,四川广安〓638000)
  • 出版日期:2014-10-25 发布日期:2014-11-20

Analysis on reason of tripping accident of generator stator grounding protection

  1. (Sichuan Guang’an Power Generation Company Limited, Guang’an 638000, China)
  • Online:2014-10-25 Published:2014-11-20

摘要: 摘要:介绍了某电厂600MW燃煤汽轮发电机组及其发电机变压器组保护的投运情况,通过检查试验确定了主变压器低压侧橡胶套管积水是引发发电机定子接地保护跳机的原因,提出了具体的整改、预防措施。

关键词: 关键词:发电机, 定子接地, 跳机保护, 橡胶套管, 预防措施

Abstract: Abstract:The operation situation of the 600MW coalfired turbogenerator set and its generatortransformer set protection in a power plant was introduced. Based on inspection and test, it was found that there was stagnant water in the rubber sleeve in lowvoltage side of the main transformer, and which caused the generator stator grounding protection tripping accident. The concrete reformation and preventive measures were proposed.

Key words: Keywords:generator, stator grounding, protection tripping, rubber sleeve, preventive measure