摘要
介绍了某变电站发生的10kV电压互感器间隔设备损坏,造成母线三相短路故障事故现场检查处理经过,分析了事故发生的原因系由瞬时性单相接地故障引起铁磁谐振过电压造成的,指出10kV系统采取预防铁磁谐振过电压的措施。
Site inspection and handling process of the busbar 3-phase short-circuit failure caused by damages of equipment in 10 kV PT bay of one station are described. The reason of the accident occurrence is found that the transient single-phase earthing failure results in the ferroresonance overvoltage which causes the 3-phase short-circuit accordingly. Measures for preventing 10 kV system from ferroresonance overvoltage are provided.
出处
《西北水电》
2016年第3期65-68,共4页
Northwest Hydropower
关键词
谐振过电压
电磁式
电压互感器
铁磁谐振
措施
ferroresonance overvohage
electromagnetic
potential transformer
ferroresonance
measure
