基于小波变换模极大值的小电流接地系统故障选线

Fault Line Selection of Small Current Grounding Power System Based on Modular Maximum of Wavelet Transform

本文讨论了小电流接地系统特点,对现有选线原理进行分析,进而构造出了基于小波变换模极大值奇异性检测原理的选线判据,经过MATLAB仿真证明该方法能够准确、可靠地实现故障选线。

This paper describes the character of small current grounding power system and analyzes the principle of fault line selection, then a criterion of fault line selection is constructed based on the principle of singularity detection of wavelet transform modular maximum. It proves that the method is able to realize the fault line selection accurately and reliably by MATLAB simulation test.