Research on Crosstalk Coupling of Trackside Cable in High Speed Railway

Abstract

The signal and power supply of trackside equipment in Chin’s high-speed railway is usually placed in the trackside trunking to avoid the influence of external harassing signals on the cable. However, due to the different voltage levels of the cables in the trough, strong and weak current cables will produce crosstalk coupling problems, which will affect the quality of train communication and running efficiency, and even endanger the safety of train running. Therefore, it is necessary to accurately analyze the crosstalk coupling problem between the cables in the trough. In this paper, the crosstalk coupling model of trackside cable is established. The Green function method simplifies the trackside trunking model, the crosstalk coupling of the cable in the trackside trunking and the electromagnetic field distribution in the trackside trunking are analyzed by using the method of moments (MOM), and the results of theoretical calculation are verified by simulation experiments.