摘要
分析了某电厂110 kV Yyd三圈变压器在110 kV侧发生接地时造成35 kV系统的传递过电压引发事故的原因,建议该类35 kV系统中性点应采用小电阻接地或消弧线圈加并联阻尼电阻接地方式。
Deep reasons of accident caused by the transfer over-voltage in the 35 kV side due to earthing in the 110 kV side are analyzed for a 110 kV Y,y,d three-winding transformer. It is suggested that the neutral point of the 35 kV system should earth through small resistance or through arc suppression coil with paralleled damping resistance.
出处
《华东电力》
北大核心
2007年第2期69-71,共3页
East China Electric Power
关键词
消弧线圈
过电压
传递过电压
中性点接地
电缆系统
arc suppression coil
over-voltage
transfer over-voltage
neutral point earthing
cable system
