城市轨道交通列车车载应答器传输模块天线电磁干扰研究
张东乙永强郭宁波赵腾
Electromagnetic Interference with the On-board Balise Transmission Module Antennas of Urban Rail Transit Train
ZHANG DongYI YongqiangGUO NingboZHAO Teng
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作者信息:青岛地铁运营有限公司，266300，青岛
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Affiliation:Qingdao Metro Operation Co., Ltd., 266300, Qingdao，China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2025.01.026
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中图分类号/CLCN:U285.28
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栏目/Col:研究报告
摘要:
［目的］城市轨道交通列车的电磁环境相对复杂，车载BTM（应答器传输模块）天线极易受到电磁干扰，容易引发行车安全隐患，需对列车车载BTM天线电磁干扰进行研究。［方法］以青岛地铁8号线发生的车载BTM天线电磁干扰为例，从敏感设备、干扰源及干扰路径等基本要素出发，排查造成电磁干扰的主要原因；结合现场实际，根据排查结果制定优化方案，并进行动态测试。［结果及结论］通过排查推断干扰源来自辅助逆变器三相逆变单元，干扰路径来自回流线缆中的高频电流。制定在辅助逆变器输入负线增加0.5uF电容的优化方案，该方案能够有效降低列车的电磁干扰对BTM天线的影响，保证列车正常运行。
Abstracts:
［Objective］ The electromagnetic environment of urban rail transit train is relatively complex. The on-board BTM (balise transmission module) antenna is highly susceptible to electromagnetic interference, which may easily lead to potential safety hazards during train operation. Therefore, it is necessary to conduct research on the electromagnetic interference with the on-board BTM antenna. ［Method］ The electromagnetic interference with the on-board BTM antenna that occurred on Qingdao Metro Line 8 is taken as an example, the main causes of the electromagnetic interference are investigated from the basic elements such as sensitive equipment, interference sources and interference paths. An optimization plan is formulated according to the actual situation on site and the investigation results, corresponding dynamic tests are carried out. ［Result & Conclusion］ Through investigation, it is concluded that the interference source originates from the three-phase inverter unit of the auxiliary inverter, and the interference path comes from the high-frequency current in the return cable. An optimization plan of adding a 0.5 μF capacitor to the negative input line of the auxiliary inverter is formulated, which can effectively reduce the impact of the train electromagnetic interference on the BTM antennas and ensure the train normal operation.
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