10kV配电网单相接地故障定位研究

本文提出了一种10kV配电网单相接地故障的区间定位方法。通过理论推导,发现比较短路故障线路区段前后端零序电压与零序电流相位的差值,能够准确的定位到发生短路故障的线路区间。该方法同时适用于金属性接地短路故障与非金属性接地短路故障。Matlab仿真结果证明,理论分析正确,具有实用价值。

In this paper,a method of interval mapping in single-phase ground fauh for lOKv distribution system was assigned. Through theoretical derivation in the difference between zero-sequence voltage phase and zero-sequence current phase befor and after the section of fault line,found it able to accurately locate the fault line between the lines. This method applies to both metallic and non-metallic ground fauh.Matlab simulations demonstrate that the proposed method is correct with practical value.