三峡工地TV烧损原因分析及预防措施

Analysis of the Reason of Burn of TV in Three Gorges and Prevention Approach

针对三峡工地中性点不接地系统 35 k V、6 k V电压等级电磁式 TV烧损 ,分析、总结了 3方面原因 ,强调其主要原因是铁磁谐振 ,针对事故原因提出了相应的解决方法。

This paper aims at analysis the reason of burning phenomenon of the electromagnetic potential transformer in 35 kV and 6 kV voltage levels in neutral point non-grounded system in Three Gorges, three reasons are summarized. It is emphasized that the main reason is the ferromagnetic resonant. The solution is given too.