对35kV电力网接地电容电流及消弧线圈脱谐度的探讨  

Discussion on the Capacitive Earth Cwrrent in the 35kV Power System and the Resonance Suppressiveness ot the Arc—Suppression Coil

作　　者：晏家进 李俊杰 

机构地区：[1]南宁供电局

出　　处：《高电压技术》1989年第1期52-56,共5页High Voltage Engineering

摘　　要：本文通过对35kV中性点不直接接地电力网的测试和分析,认为传统的35kV电力网接地电容电流的估算公式Ic=0.1l不适宜于本地区使用,而应修改为Ic=0.115l;对有关规程规定的消弧线圈过补偿脱谐度不大于10%提出不同看法。按这一规定去整定消弧线圈的补偿电流是很难实现的,应根据不同的电网情况按25%～35%来整定。以上这些都已在本网区实现,而且行之有效。Based on the test and analysis of the 35kV neutral unearth power systems the capacitive earth current estimating formula in the 35kV power systems should be corrected as I_c=0.1151 in stead of I_c=0.1 l. If we test the arc—suppression coil compenssating current according to the rulers of not more than 10% it's very difficult to realize. We must test the current according to the overcompesation suppressiveness 25% to 35% under diflerent system conditions.

关 键 词：电力网 接地电容电流 消弧线圈 

分 类 号：TM835.4[电气工程—高电压与绝缘技术]