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地铁车辆接地回流性能动态分析与优化
Dynamic analysis and improvement of grounding return performance of metro vehicles
- 机车电传动 2022年第2期 页码：121-128
- 作者机构：
1.中车南京浦镇车辆有限公司，江苏 南京 210031
2.北京交通大学 电气工程学院，北京;100044
- 作者简介：
卢 庆（1984—），男，高级工程师，从事牵引辅助设计技术研究；E-mail: prsclq@sina.com
- 基金信息：中车南京浦镇车辆有限公司科研项目(2020K155);国家重大技术装备攻关工程项目（系统化中国标准地铁列车研制及试验）
DOI：10.13890/j.issn.1000-128X.2022.02.017
中图分类号： U231+.8纸质出版日期：2022-03-10，
收稿日期：2021-11-29，
修回日期：2022-03-02，
- 稿件说明：
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卢庆, 綦芳, 王哲, 等. 地铁车辆接地回流性能动态分析与优化[J]. 机车电传动, 2022,(2):121-128.
LU Qing, QI Fang, WANG Zhe, et al. Dynamic analysis and improvement of grounding return performance of metro vehicles[J]. Electric drive for locomotives, 2022,(2):121-128.
卢庆, 綦芳, 王哲, 等. 地铁车辆接地回流性能动态分析与优化[J]. 机车电传动, 2022,(2):121-128. DOI： 10.13890/j.issn.1000-128X.2022.02.017.
LU Qing, QI Fang, WANG Zhe, et al. Dynamic analysis and improvement of grounding return performance of metro vehicles[J]. Electric drive for locomotives, 2022,(2):121-128. DOI： 10.13890/j.issn.1000-128X.2022.02.017.
摘要
本文分析地铁车辆在牵引供电系统中的回流性能，并提出车辆接地优化设计方案。针对常用时域仿真分析方法无法准确连续反映车辆整体运行过程的不足，提出一种用于地铁车辆接地回流性能分析的车网联合动态仿真技术方案。以车体采用经保护电阻接地和直接接地两种技术方案的实际车型为研究对象，在通用仿真环境下建立包含车体、车辆接地电路、牵引负荷、钢轨回流电路以及供电网络的综合模型。基于地铁线路和车辆关键参数获得牵引计算结果，并将其导入仿真模型，实现车辆牵引功率、受流位置持续动态刷新，从而模拟车辆运行过程接地回流分布特性。仿真分析表明，在同一线路采用相同牵引控制策略时，经保护电阻接地车型较直接接地车型有更小的钢轨至车体回流以及车体间电流，但车体电位略有抬升；并进一步基于电阻接地电路提出了两种优化接地设计方案，仿真结果证明这两种方案均兼顾了整车的车体回流与电位抑制。该仿真方法对校验地铁车辆接地方案性能具有实用性，所得仿真结果对接地设计具有一定的参考价值。
Abstract
The return performance of metro vehicles in the traction power supply system was analyzed
and an improved design for vehicle grounding was proposed. Since the metro vehicle operation process cannot be accurately and continuously performed by conventional time-domain simulations
a network-vehicle interaction dynamic simulation scheme was proposed for analyzing the grounding return performance of metro vehicles. Taking the two actual metro types
adopting resistor grounding and direct grounding respectively
as the objects of study
comprehensive models consisting of the vehicle body
grounding circuit
traction load
rail return circuit and power supply network were developed in the general simulation environment. Based on the key parameters of the metro line and vehicle
traction calculation results were acquired
and then were imported into the models
which achieved continuous update of the vehicle traction load and associated position
so as to simulate the grounding return distribution during the vehicle operation process. Simulation analysis verified that in the same line with the same traction strategy
the model grounded via protective resistor had less car body-rail return current and inter-car body current than the directly grounded model
but its car body potential was slightly raised. Further
two improved designs based on the resistor grounding scheme were proposed. Simulation results show that both the designs strike a balance between car body return current and potential suppression of a whole metro train. The proposed simulation method is useful for verifying the performance of metro vehicle grounding
and the simulation results can be as a reference for the grounding design.
关键词
地铁车辆接地回流牵引计算动态仿真
Keywords
metro vehiclegrounding returntraction calculationdynamic simulation
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