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电网技术  2009 

铁路贯通线路单相接地故障频谱特征分析

, PP. 80-84

Keywords: 客运专线,铁路贯通线路,中性点不接地系统,暂态分量,特征频带

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Abstract:

介绍了客运专线配电系统的电气结构和特点,通过理论推导和仿真建模相结合的方法分析了客运专线配电线路发生单相接地故障后故障分量的暂态过程和频谱分布,划定了暂态分量的特征频带,分析了线路中电缆比例、过渡电阻、故障初相角和负荷数目对该特征频带的影响。仿真结果表明将线路发生单相接地故障后故障分量的特征频带划定在200~3000Hz是合理的;线路中电缆的比例、过渡电阻和故障初相角的大小对特征频带将产生较大影响,而故障距离和负荷对特征频带的影响较小。

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