摘要
针对太原电网110 kV辐射性网络中,变压器中性点的接地情况,分析线路末端发生单相接地故障,导致线末变压器中性点保护动作及所接母线上的线路保护反向动作的问题,通过对变压器中性点过电压现象的分析及对目前太原网变压器中性点采用的保护配置方式进行了探讨,提出了适合太原电网现行变压器中性点保护的配合与整定的建议。
Regarding situation of transformer netual-point earthing in 110 - radiate network, It analysed single earthing faults which occurred at the end of line, result in transformer netual protection acting and reacting of its line protection on the bus bar. Through analyzing of transformer neutral-point over-voltage, It discussed protection scheme of transtormer netrualpoint in Taiyuan power network, put forward advice of its assortment and acting value.
出处
《山西电力》
2006年第2期19-22,共4页
Shanxi Electric Power
关键词
中性点
过电压
系统分析
保护措施
netual-point
overvoltage
system analyzing
protection measure
