配网TV熔丝熔断原因分析及抑制措施研究

Analysis on the cause of TV fuse blowing in distribution network and study on the restraining measures

针对国网吉林供电公司66 kV新城变电站10 kV电压互感器高压侧熔丝短期内频繁熔断的现象,分析了配电系统中电磁式电压互感器铁磁谐振过电压的产生机理,提出3种抑制铁磁谐振的方法并进行了比较,为今后的系统升级改造提供参考。

In view of the frequent fusing of the high-voltage side fuse of the 10 kV voltage transformer in the 66 kV Xincheng substation of State Grid Jilin power supply company in a short period of time,this paper analyzes on the generation mechanism of the ferromagnetic resonance overvoltage of the electromagnetic voltage transformer in the distribution system,puts forward and compares three methods for restraining the ferromagnetic resonance,with a view to providing reference for the system upgrading and reconstruction in the future.