基于模态分析法的群组列车牵引供电系统并联谐振频率研究

doi:10.3969/j.issn.1673-4440.2024.05.001

铁路通信信号工程技术 ›› 2024, Vol. 21 ›› Issue (5): 1-7.DOI: 10.3969/j.issn.1673-4440.2024.05.001

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基于模态分析法的群组列车牵引供电系统并联谐振频率研究

阳晋

北京全路通信信号研究设计院集团有限公司，北京 100070

收稿日期:2023-10-07 修回日期:2024-05-07 出版日期:2024-05-25 发布日期:2024-05-25
作者简介:阳晋（1985—），男，高级工程师，硕士，主要研究方向：铁路信号控制、电气化铁路过电压形成机理及防护研究，邮箱：yangjin@crscd.com.cn。
基金资助:
北京全路通信信号研究设计院集团有限公司科研项目（2300-K1200035.01）

Study on Parallel Resonance Frequency of Traction Power Supply System for Train Groups Based on Modal Analysis Method

Yang Jin

CRSC Research & Design Institute Group Co., Ltd., Beijing 100070, China

Received:2023-10-07 Revised:2024-05-07 Online:2024-05-25 Published:2024-05-25

摘要/Abstract

摘要： 重载铁路运载量的不断增长，可采用同一供电臂增加运行列车数量来解决运能不足问题。但当列车数量增多时，多列车发出的谐波电流会分布在牵引网多位置处，且会使谐波电流叠加，引发严重的牵引供电系统并联谐振事故，因此，有必要研究多列车运行情况下系统谐波谐振频率分布。利用牵引网多导体降阶方法，得到简化的牵引网等效电路模型。通过采用模态分析方法，研究多列车在不同功率运行情况下牵引供电系统并联谐振频率的变化，得到谐波谐振的节点参与信息。研究表明：当6辆列车在牵引网以4～8 MW功率运行时，引发系统谐振的低次谐波次数为38～43次，高次谐波次数为116～118次。

关键词: 重载铁路, 谐波谐振, 导体降阶, 模态分析法

Abstract: As the transport volume of heavy-haul railways continuously increases, the problem of insufficient traffic capacity may be addressed by increasing the number of trains utilizing one and the same supply arm. However, when the number of trains is increased, the harmonic currents generated by multiple trains may be distributed at multiple locations of the traction network and may be superimposed, which causes serious accidents related to the parallel resonance of traction power supply systems. Therefore, it is necessary to study the frequency distribution of system harmonic resonance in the situation of multi-train operation. In this paper, the conductor multi-conductor step-down method is adopted to establish a simplified equivalent circuit model for the traction network. Then, the modal analysis method is utilized to study the frequency changes of the parallel resonance of traction power supply systems in the situation of multi-train operation with power variation, so as to obtain the node participation information of harmonic resonance. The research results shows that when 6 trains operate in the traction network with power variation of 4~8 MW, there are 38~43 low-order harmonic waves and 116~118 high-order harmonic waves related to system harmonic resonance.

Key words: heavy-haul railway, harmonic resonance, conductor step-down, modal analysis method

中图分类号:

U284.8

阳晋. 基于模态分析法的群组列车牵引供电系统并联谐振频率研究[J]. 铁路通信信号工程技术, 2024, 21(5): 1-7.

Yang Jin. Study on Parallel Resonance Frequency of Traction Power Supply System for Train Groups Based on Modal Analysis Method[J]. Railway Signalling & Communication Engineering, 2024, 21(5): 1-7.

图/表 7

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基于模态分析法的群组列车牵引供电系统并联谐振频率研究

Study on Parallel Resonance Frequency of Traction Power Supply System for Train Groups Based on Modal Analysis Method

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