摘要
阐述了煤矿中压供电系统中性点接地采用非有效接地方式发生单相接地时故障特征以及选择中性点经消弧线圈接地的必要性,以例说明了电容电流的取值过程,并提出了选择中性点经消弧线圈接地方式有关注意事项。
The necessity of single-phase grounding in the neutral point grounding of coal mine medium-voltage power supply system and the necessity of selecting the neutral point through the arc-suppression coil were described. The process of capacitor current was illustrated. The matters needing attention in selecting neutral point grounding mode through arc suppression coil were put forward.
作者
高增伟
GAO Zeng-wei(Qinxiu Mining Co.,Ltd.,Jincheng Anthracite Mining Group of Shanxi,Jincheng 048007,China)
出处
《机电工程技术》
2019年第8期253-254,共2页
Mechanical & Electrical Engineering Technology
关键词
中性点接地方式
电容电流
自动跟踪补偿消弧装置
neutral grounding method
capacitance current
automatic tracking compensation arc extinguishing device
