基于多导体传输线模型的牵引网谐波谐振模态分析  

Modal Analysis of Harmonic Resonance in Traction Network Based on Multi-Conductor Transmission Line Model

作　　者：贺明 王冲 慕华 HE Ming;WNAG Chong;MU Hua(State Grid Xi′an Electric Power Supply Company, Xi′an 710032, China;Sinohydro Bureau 3 Co.,Ltd., Xi′an 710016, China)

机构地区：[1]国网西安供电公司,西安710032 [2]中国水利水电第三工程局有限公司,西安710016

出　　处：《内蒙古电力技术》2018年第2期16-21,共6页Inner Mongolia Electric Power

摘　　要：根据牵引网自身结构特点,在建立多导体传输线模型的基础上,利用多导体降阶理论,形成网络节点导纳矩阵。应用模态分析算法对节点导纳矩阵进行特征根分析,准确找到了谐振频率、谐振点。通过改变机车位置和牵引网供电臂长度对牵引网谐波谐振进行研究,结果证明模态分析方法是进行牵引网谐波谐振分析的有效工具。According to the structure characteristic of traction network,based on the multi-conductor transmission line model,and using the order-reduction theory of multi-conductor,the author derives the node admittance matrix in traction network.The modal analysis method is used to analyze the eigenvalue for the node admittance matrix.The result shows that the resonance frequency and resonance point are correct.Through the research on the relation between harmonic resonance occurred in traction network,and the factors such as the length of traction network and the location of locomotive,it is confirmed that the modal analysis method is a valuable tool for traction network harmonic analysis.

关 键 词：模态分析 谐波谐振 牵引网 多导体传输线 降阶理论 电力机车 

分 类 号：TM711[电气工程—电力系统及自动化] U223.63[交通运输工程—道路与铁道工程]