摘要
通过几起三相四线接线的计量用电压互感器(简称PT)二次回路N线多点接地造成PT二次压降超差现象的分析,讨论和总结了PT二次回路N线多点接地后PT二次电压降的表现特征,并提出了相应的解决办法。
Through the analysis of some PT secondary voltage drop over error-limit caused by the multi-point earthing of PT secondary circuit in three-phase-four-wire system, this paper discusses and summarizes the characteristics of PT secondary voltage drop when there is multi-point earthing in PT secondary circuit, and the corresponding solutions are given.
出处
《电测与仪表》
北大核心
2006年第4期23-26,共4页
Electrical Measurement & Instrumentation
关键词
电压互感器
二次回路
PT二次电压降
多点接地
potential transformer （PT）
secondary circuit
secondary voltage drop
multi-point earthing
