卢洪锋,郑平,孟宪华
LU Hong-feng,ZHENG Ping,MENG Xian-hua(Jinhua Electric Power Bureau

• 1:金华电业局

摘要(Abstract)：

分析了500 kV丹溪变1号主变压器的冷却器控制原理及出现的异常情况。冷却器电源监视继电器设计采用三相保护继电器,运行经验表明,该类继电器的实际应用意义不大,反而经常误触发冷却器故障信号,还会给正常运行的变压器带来冷却器全停跳闸的安全隐患,应给予更换。
This paper analyses the control principles of the cooler for No.1 500 kV autotransformer in Danxi substation and its abnormal situation.The three-phase protection relay is adopted for power supply monitoring of the cooler.The operation practice indicates that the application of this type of relays is not desirable and the relays would often trigger cooler fault signals by mistake and cause hidden danger of cooler trip.Replacement of the three-phase protection relay is recommended.

关键词(KeyWords)： 500kV;自耦变;冷却器;继电器;异常
500 kV;autotransformer;cooler;relay;abnormal situation

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 卢洪锋,郑平,孟宪华
LU Hong-feng,ZHENG Ping,MENG Xian-hua(Jinhua Electric Power Bureau

DOI: 10.19585/j.zjdl.2012.09.007

参考文献(References)：

• DL/T 572-2010电力变压器运行规程[S].北京:中国电力出版社,2010.
• 杨开国.因主变冷却器故障造成跳闸事故的分析和改进[J].华中电力,2006,19(4):61-64.