基于故障序特性的配电网单相接地故障研究

Research on Single Phase to Ground Fault in Distribution Network Based on Fault Sequence Characteristics

为深入分析和处理配电网单相接地故障问题,保证配电网运行性能,在分析配电网单相接地故障特征的基础上,研究序特性分析方法,有效构建单相接地序特性模型。利用电流、电压双判据,对故障段区进行融合定位处理,并采用阻抗测距法分析故障段区,实现对故障点的精确定位。此外,对该单相接地故障进行仿真分析,提升配电网运行的稳定性。

In order to deeply analyze and deal with the single-phase grounding fault in distribution network and ensure the operation performance of distribution network,based on the analysis of the characteristics of single-phase grounding fault in distribution network,the sequence characteristic analysis method is studied and the single-phase grounding sequence characteristic model is effectively constructed.Using the current and voltage double criteria,the fault section is fused and located,and the fault section is analyzed by impedance method to realize the accurate location of the fault point.In addition,the single-phase grounding fault is simulated and analyzed to improve the stability of distribution network operation.