Li Fei. Discrimination Analysis for Single-phase Ground Fault in 10 kV Ungrounded System[J]. 2020, 43(5): 53-55.DOI:
10 kV不接地系统单相接地故障接地相判别分析
摘要
采用电路理论分析以及数学公式推导
分析了10 k V不接地系统单相接地故障时接地相特征
并通过一起实际事故案例
结合故障录波及CAD软件分析
提出一种新的判别不接地系统单相接地故障时接地相的方法。
Abstract
The circuit theory analysis and mathematical formula derivation are used to analyze the characteristics of single - phase ground fault in 10 kV ungrounded system. Combined with the analysis of fault recording and CAD software in a practical accident case,a new method of judging the fault phase for single - phase ground fault in 10 kV ungrounded system is proposed.