Vehicle-Ground United Traction Power Supply Calculation in Dual-System Train Grounding System

被引：0
|
作者：
Liu W. [1 ]
Yang L. [1 ]
Ma Q. [1 ]
Li X. [2 ]
Bhatti A.A. [1 ]
机构：
[1] School of Electrical Engineering, Southwest Jiaotong University, Chengdu
[2] CRRC Changchun Railway Vehicles Co., Ltd., Changchun
来源：
Xinan Jiaotong Daxue Xuebao/Journal of Southwest Jiaotong University | 2024年 / 59卷 / 03期
关键词：
chain circuit; current circulation of train’s body; dual-system train; train grounding system; united traction power supply calculation;
D O I：
10.3969/j.issn.0258-2724.20220655
中图分类号：
学科分类号：
摘要：
In order to study the distribution of current circulation and potential of the train’s body–axle end of the dual-system train in different power supply system sections, the chain circuit model of the train grounding system was established based on a dual-system train, and a united traction power supply calculation method was proposed for the vehicle-ground integration in alternating current (AC) and direct current (DC) sections. At the same time, the optimization model of train grounding protection resistance was established, and two configuration schemes of the train grounding system were analyzed. A dual-system rail transit line in China was studied for simulation verification. The research results show that compared with scheme 2, scheme 1 can reduce the maximum potential value of the train’s body–axle end by 36.58%–41.04% and the maximum current circulation value by 18.49%–22.97%. In addition, scheme 1 sets the protection resistance at the first and last vehicles at 20 mΩ, which can achieve a maximum potential value of the train’s body–axle end of 1.15 V and a maximum current circulation value of 50.30 A. It can reach the optimal effect of restraining the potential of the train’s body–axle end. The united traction power supply calculation method for the vehicle-ground integration in AC and DC sections can be applied to grounding system analysis of power supply single-system or multiple-system trains. © 2024 Science Press. All rights reserved.
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页码：501 / 509
页数：8
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