高速铁路全并联AT供电系统串联谐振分析

来源 :中国电机工程学报 | 被引量 : 0次 | 上传用户:fanjolly
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为分析牵引供电系统串联谐振问题,提出一种新的分析方法。利用五导体链式电路和恒功率模型,建立精确的高速铁路全并联AT供电系统模型。由于在机车恒功率建模中,其等效阻抗随着不同的接触网电压而变化。为描述其恒功率特性,介绍一种基于节点导纳矩阵的机车等效阻抗的迭代方法。在此基础上,利用支路法分析全并联自耦变压器(autotransformer,AT)供电系统在不同运行工况下(不同机车数量、位置、功率等)的谐波电流放大和串联谐振现象。分别针对上行单机车、2机车和上下行各l辆机车3种工况进行分析。结果表明支路法能有效分析单谐波源与多谐波源下的串联谐振。
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