摘要
叙述了中性点不接地系统中单相金属性接地故障的原因,分析了不同情况下发生的经过渡电阻单相接地故障,找到了发生经过渡电阻单相接地时三相电压的变化规律,提出,判别故障相别的科学依据,对现场运行及事故处理有重要意义。
In this paper analyzed the single-phase metallic ground fault in neutral point grounding system,and analyzed the transition resistance ground fault in different circumstances occurring,find a regular pattern of three-phase voltage when resistance transition Single phase earthing,point out science-based for distinguish fault identification,correct the error happened in operation,scheduling personnel determining the ground phase,it is important for handling on-site operation and incident.
出处
《能源与节能》
2011年第10期74-77,共4页
Energy and Energy Conservation
关键词
小电流接地系统
单相接地故障
过渡电阻
故障相判别
small current grounding system
single-phase ground fault
transition resistance
fault phase identification
