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电网技术  2012 

基于模态分析的全并联AT网动态谐波谐振研究

, PP. 163-169

Keywords: 模态分析,全并联自耦变压器网,谐波谐振,动态运行条件

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Abstract:

为防止牵引网谐波谐振引起的系统过电压,达到及时预防和抑制的目的。本文针对中国高速铁路全并联AT(Auto-Transformer,自耦变压器)供电方式,通过利用模态分析方法对系统的节点导纳矩阵进行分析处理,通过解耦与特征值求取确定系统的谐振信息。研究机车功率变化、机车位置移动等动态条件下的牵引网谐振规律。并且针对谐振频率在某一区间或范围变化,提出“谐振带”的概念。此方法能有效的识别系统的谐振频率,并且对于分析由动态运行的机车产生的动态谐波谐振研究具有很大的理论创新和实际应用。

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