中性点经电阻接地系统单相接地故障稳态性分析

The analyse of Neutral grounding system resistance single-phase ground fault steady-state

分析中性点经电阻接地系统的故障稳态状态，建立中性点经电接地电流系统单相接地故障模型，仿真结果表明中性点非有效接地系统在单相接地时系统出现零序电压，非故障线路出现零序电流，为本身对地电容电流，超前零序电压90°，故障线路始端零序电流为非故障线路对地电容电流之和外加上中性点接地元件上的电流。

This paper analyzes the steady-state fault of neutral earthing resistance system, the establishment of grounding a single ground fault model simulation of small current system, the results show that an effective non-neutral earthing system in the single-phase system produces zero-sequence voltage, non-fault line produces zero sequence current, it＇s self-grounding capacitive current, zero sequence voltage ahead of 90, before the end of fault line is a non-zero sequence current fault lines and capacitive current on the outside and add neutral grounding devices on the current.