When the pantograph of a high-speed train is separated from the power supply line, a panto-graph-catenary arc (PCA) occurs. This generates electromagnetic interference (EMI) and additional undesired effects on the electrical equipment (such as speed sensors) on the train. It creates a safety hazard for high-speed train operation. This article presents a new method for dealing with EMI caused by the PCA on speed sensors of high-speed trains. The proposed method consists of carrying out an in-depth analysis of the different coupling modes of EMI to identify the corresponding interference suppression measures. Thus, the safety of train operation can be ensured. By changing some relevant parameters, the proposed method can also be applied to other types of trains and electrical equipment.

中文翻译：

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为了更安全的高速列车：速度传感器电磁干扰的综合研究方法


当高速列车的受电弓与供电线路分离时，会出现受电弓接触网电弧（PCA）。这会对火车上的电气设备（例如速度传感器）产生电磁干扰（EMI）和额外的不良影响。给高速列车运营带来安全隐患。本文提出了一种处理高速列车速度传感器上 PCA 引起的 EMI 的新方法。所提出的方法包括对 EMI 的不同耦合模式进行深入分析，以确定相应的干扰抑制措施。从而保证列车运行的安全。通过改变一些相关参数，所提出的方法也可以应用于其他类型的列车和电气设备。