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电网技术  2006 

一种新的直流系统环网接地故障检测方法

, PP. 57-60

Keywords: 低频信号注入法,直流系统,接地故障,环网,分形维数,凹凸度参数

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Abstract:

在传统低频信号注入法的基础上提出了一种新的基于小波变换和分形理论的直流系统环网接地故障检测方法,引入分形理论中的凹凸度参数,利用凹凸度参数和分形维数唯一确定的二维平面上点的位置来识别不同情况下的环网接地故障。该方法弥补了低频信号注入法难以解决环网问题的缺陷,大量的仿真计算验证了该方法的有效性。

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