Simulation on Temperature Characteristics of Pantograph Slide in Inclined State

doi:10.11985/2023.04.036

Abstract

Abstract:

In the pantograph-catenary system of high-speed railway, due to the influence of adverse factors, there is a slight inclination angle between the contact wire and the pantograph slide, resulting in high temperature accumulation and damage to the slide. In order to explore the influence of the inclination angle on the temperature of the slide, a temperature field simulation model of the pantograph-catenary system under the inclination angle condition is established by using COMSOL Multiphysics software. The equivalent area method is used to simulate the inclined operation state of the slide. The arc energy under different working conditions is calculated by using the measured experimental data, and that under strong current condition is predicted. The validity of the simulation model is verified by using experimental results. The temperature rise and temperature distribution characteristics of the slide under different inclination angle conditions are simulated. Under the same working conditions, the temperature of the slide in the inclined state is 643 ℃ higher than that of in the normal state. The temperature rise curve of the slide in the inclined state is ridge shape. The optimal contact pressure increases with the increase of the inclination angle. In the inclined state, the temperature is largely concentrated in the middle of the slide.

Key words: Sliding electrical contact, inclined operation state, temperature rise, pantograph-catenary system

CLC Number:

TM501

ZENG Jiashuai, LIU Guifen, WANG Zhiyong, WANG Qi. Simulation on Temperature Characteristics of Pantograph Slide in Inclined State[J]. Journal of Electrical Engineering, 2023, 18(4): 340-348.

Figures/Tables 21

References 20

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影响因素	取值范围
静态接触压力/N	70
接触电流/A	0、70
滑动速度/(km/h)	70、90、110
倾斜角度/(°)	0、1、2、3、4

倾角/(°)	接触电流/A	第100 s内电弧能量/J	第200 s内电弧能量/J	第300 s内电弧能量/J	第400 s内电弧能量/J	第500 s内电弧能量/J	第600 s内电弧能量/J
1	70	20 459	5 508	4 401	3 280	4 380	3 315
2	70	34 420	10 597	7 872	5 657	5 851	6 332
3	70	19 795	10 307	7 270	5 729	8 327	4 994
4	70	37 282	11 134	8 724	7 905	7 921	5 235