摘要
针对220kV人和变电站10kV开关拒动引起主变差动保护的问题,结合现场实际案例,通过对故障点进行解体剖析,总结出了越级跳闸的原因及处理方法。根据现场实践经验,从设备安装工艺及日常维护等方面提出了预防性措施,可对解决类似故障起到一定借鉴作用。
Aim at the problem of main transformer differential protection for 220kV renhe substation caused by non-action of 10kV switch,combined with the practical example,it analyzes the reasons for bypass trip by Introduction the disinteration of the fault,the preventive measures are put forward from the aspects of routine maintenance and installation process by practical experience,Consequently,it can solve the similar fault by the experience.
作者
范敏
FAN Min(State Grid Leshan Power Supply Company,Leshan 614000,China)
出处
《电气开关》
2020年第3期103-105,共3页
Electric Switchgear
关键词
断路器
差动保护
越级跳闸
Circuit Breaker
Differential Protection
bypass trip
