电子开关自动过分相阻抗建模与暂态分流特性  

Impedance Modeling and Transient Current Dividing Characteristics of Neutral Section Auto-passing Technology with Power Electronic Switches

作　　者：吴丽然[1] 吴命利[2] 刘建强[2] 仇乐兵 WU Liran;WU Mingli;LIU Jianqiang;QIU Lebing(Frontiers Science Center for Smart High-speed Railway System,Beijing Jiaotong University,Beijing 100044,China;School of Electrical Engineering,Beijing Jiaotong University,Beijing 100044,China;Zhuzhou CRRC Times Electric Co.,Ltd.,Zhuzhou 412001,China)

机构地区：[1]北京交通大学智慧高铁系统前沿科学中心,北京100044 [2]北京交通大学电气工程学院,北京100044 [3]株洲中车时代电气股份有限公司,湖南株洲412001

出　　处：《铁道学报》2025年第4期51-57,共7页Journal of the China Railway Society

基　　金：中央高校基本科研业务费(2022JBQY008)。

摘　　要：分相区限制了交流牵引供电系统的供电连续性,不利于进一步提高列车运行的高效性,基于电子开关的自动过分相技术是提高供电连续性的方法之一。提出一种采用晶闸管阀组作为电子开关的过分相系统阻抗建模方法,考虑晶闸管阀组非线性阻抗、传输线缆阻抗,分析列车通过锚段关节时晶闸管阀组、供电臂两回路的暂态分流特性,以及晶闸管阀组回路阻抗的主要影响因素。通过Matlab-Simulink仿真和现场试验证明阻抗建模方法的正确性。Neutral section restricts the continuity of power supply in AC traction power supply systems,which is unfavorable to further improving the operation performance of trains.The neutral section auto-passing technology based on power electronic switches is one of the effective methods to improve the continuity of power supply.An impedance model was proposed in the neutral section auto-passing system using thyristor valve groups as the electronic switches.Considering the nonlinear impedance of thyristor valve group and cable transmission impedance,the current dividing characteristics between the thyristor valve circuit and the power supply arm,and the main factors affecting the impedance of the thyristor valve circuit were analyzed while the train passing through the overlapping section.Finally,the correctness of the impedance modeling method was proved by Matlab-Simulink simulation and field test.

关 键 词：分相区 电子开关 阻抗建模 分流特性 

分 类 号：U223.6[交通运输工程—道路与铁道工程]