10 kV不接地系统单相接地故障接地相判别分析

Discrimination Analysis for Single-phase Ground Fault in 10 kV Ungrounded System

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．