№ 18 (ЕСБЗТ)

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Browsing № 18 (ЕСБЗТ) by Author "Mysiv, Ivan"

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    Impact of Electromagnetic Interferences on Traction Network: Mathematical Model of Traction Network
    (Дніпровський національний університет залізничного транспорту імені академіка В. Лазаряна, Дніпро, 2019) Taghizade, Ansari Hossein; Serdiuk, Tetiana M.; Mysiv, Ivan
    ENG: In Ukraine, almost half of the railway lines are electrified. In railway network, there are automatic devices by w ich traffic of trains and safety on the railway are regulated. However, there are some faults in these automatic devices that can put the passengers and the railway system’s safety at risk. The main sources of these faults are the presence of the stray currents, harmonics, and the electromagnetic interferences. For investigation of these faults, having an accurate model of the railway network is vital. So the topic of research is actuality now. The main goal of this paper is to study the propagation of traction current harmonics on feeder zone (section between substations) and to define the interference on code current flowing in rail lines. Thus, it is necessary to carry out a mathematic model of the traction supply net. Also some scientific work was addressed to determine the traction current spectrum composition and the most dangerous harmonics for TC operations. This paper introduce a mathematical model of the railway network, which can be helpful in analysis of the impact of these faults on the railway network. It was considered as 8-poles for the one-track railway traction. As mentioned before, one of the main steps to investigate the electromagnetic interferences' impact on automatic devices of the railway system is the accurate model of traction network. The proposed model can be used when the electric locomotive current divides into two different current which flow in traction lines. Moreover, a system of differential equation regarding the proposed model was written and a solution to this system was introduced. All rail currents and the return current can be calculated from the above solution. Therefore, the impact of electromagnetic interferences on these current can be investigated.