摘要
电力系统中心点绝缘系统在确定是否要配置消弧线圈时,需要估算或测量系统的单相接地电流。用戴维南定理推导了偏置电容法测量电容电流的计算式,并分析了其产生误差的原因。
The estimation or measurement of single-phase grounding current is required when determine whether to deploy arc suppression coil or not in core insulation system.This paper deduces biased capacitor method by adopting Thevenin s theorem,analyzes the reasons for differences generated by this method and proposes measures to avoid differences.Practice proves this method is simple and feasible as well.
出处
《黑龙江电力》
CAS
2010年第3期212-213,共2页
Heilongjiang Electric Power
关键词
等值电路
电容电流
误差
偏置电容法
equivalent circuit
capacitive current
difference
biased capacitor method
