庄胜斌;缪希仁;江灏;郭谋发;

• 1:福州大学电气工程与自动化学院

摘要(Abstract)：

针对谐振接地系统发生单相高阻接地故障时单一特征量故障信息不明显,以及故障线路与非故障线路暂态零序电流存在明显差异的特点,提出一种基于改进欧式-动态弯曲距离的单相高阻接地故障选线新方法。将动态弯曲距离与欧式距离相结合,求取各线路故障2个周期后暂态零序电流波形的相似度矩阵,构建各线路波形的综合相似系数,并结合模糊C均值聚类算法,实现单相高阻接地故障选线。对于工程应用中线路参数差异造成的非故障线路暂态零序电流波形相似性低的问题,对原始波形进行预处理,以提高选线方法的可靠性。通过大量仿真,验证选线方法对单相高阻接地故障和各类接地故障的有效性。在噪声干扰、采样不同步、零序电流互感器极性反接、两点高阻接地等极端情况下,选线方法具有较强的鲁棒性和容错性。

关键词(KeyWords)： 谐振接地系统;单相高阻接地故障;波形预处理;改进欧氏-动态弯曲距离;模糊C均值聚类

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(51377023)~~

作者(Author): 庄胜斌;缪希仁;江灏;郭谋发;

Email:

DOI: 10.13335/j.1000-3673.pst.2018.3037

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