Abstract
As the density of the high-speed railway network continues to increase, the problem of electromagnetic interference on adjacent lines has become increasingly prominent. This paper focuses on the electromagnetic interference of adjacent lines caused by rail and line in the signal transmission process of the high-speed rail track circuit. Firstly, complete the establishment of the four-terminal network model of the ZPW-2000A track circuit system and the cab signal entry current crosstalk model, calculation of interference voltage under different parallel length of signal frequency. Then the interference factors and coupling mechanism of adjacent lines are analysed to realize calculation of interference amount. Finally, according to the sensitivity index of the cab signal, the maximum parallel length of adjacent sections is given respect, and the interference protection suggestions of adjacent lines are put forward. The research work of this paper provides a theoretical basis for suppressing the interference of adjacent lines and guarantees the safe and efficient operation of high-speed trains.
Highlights
The track circuit is an important device for detecting train occupancy, rail integrity, and train-ground information transmission in the railway signal system
It is significance to establish the simulation model of adjacent line interference of track circuit to realize the protection of electromagnetic interference of railway signal system to ensure the safe and efficient operation of trains
Lucca[3] et al studied the influence of inductive interference caused by the electrified double track on the track circuit, and proposed an algorithm for sensitivity analysis of the electromagnetic interference level generated; E
Summary
The track circuit is an important device for detecting train occupancy, rail integrity, and train-ground information transmission in the railway signal system. In the high-speed and heavy-haul electrified railway, the track circuit is affected by the surrounding strong electromagnetic interference sources (such as the traction power supply system) [1]. It is significance to establish the simulation model of adjacent line interference of track circuit to realize the protection of electromagnetic interference of railway signal system to ensure the safe and efficient operation of trains. Lucca[3] et al studied the influence of inductive interference caused by the electrified double track on the track circuit, and proposed an algorithm for sensitivity analysis of the electromagnetic interference level generated; E. In the face of more stringent safety requirements and a more complex electromagnetic environment, the mechanism of adjacent line interference is still worthy of further study
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