volume | PIER Journals

Abstract

Large metropolitan areas have planned different types of rail transit integrating into transportation hubs due to the needs of integrated development. Owing to scenarios such as parallel or cross-line operation of a junction station, a complex electromagnetic environment may affect the normal operation of BTM equipment. Therefore, it is necessary to study the influence of the trackside electromagnetic environment on the BTM antenna. Taking the scenario in which the parallel section of a mainline railway and an urban rail transit enters the station, as well as the situation in which two trains are adjacent at the junction station, as an example, the model of the BTM antenna is established to analyze the electromagnetic interference of urban rail transit trains in operation. The induced voltage of the BTM antenna in urban rail transit trains is calculated based on electromagnetic environment data from the electromagnetic disturbance source collected on site to analyze the influence on its normal operation. The amplitude of the induced voltage at the BTM antenna port is lower than its normal operation scenario when the parallel section of a mainline railway and an urban rail transit enters the catenary hard across section. The amplitude satisfies the requirement of its starting electromagnetic environment when the urban rail train stops at the platform while the mainline train passes at speed. Under a multi-network integration background, research results show that the trackside electromagnetic environment along the mainline railway will not cause an electromagnetic interference problem for the BTM antenna of the urban rail train.

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Dr. Meng Li