华电技术 ›› 2017, Vol. 39 ›› Issue (3): 49-50.

• 技术交流 • 上一篇    下一篇

200kV变压器轻瓦斯保护动作分析及处理

  

  1. 江苏华电戚墅堰发电有限公司,江苏常州〓213011
  • 出版日期:2017-03-25 发布日期:2017-04-26

220kV transformer slight gas protection reaction analysis and treatment

  1. Jiangsu Huadian Qishuyan Power Generation Company Limited, Changzhou 213011,China
  • Online:2017-03-25 Published:2017-04-26

摘要:

瓦斯保护作为油浸变压器主要保护,能反映变压器油箱内部各类故障,主要包含轻瓦斯和重瓦斯2部分,一般轻瓦斯动作于告警,重瓦斯保护动作于跳闸。通过对热备用状态中的220kV变压器一次轻瓦斯保护动作的异常情况进行分析排查,得出变压器吸湿器堵塞引起轻瓦斯保护误动作,为油浸变压器运行维护提供参考。

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Abstract:

As the primary protection for oil immersed transformer, gas protection reflected the kind of inside failure. Normally, slight gas reaction to warn, and heavy gas protection to trip. By analysing a slight gas reaction of a 220kV transformer, a false warn caused by moisture absorber blockage was found. This could be referred for oil immersed transformer maintenance.

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