Study on electric spark discharge between pantograph and catenary in electrified railway

IET Electrical Systems in Transportation

Zhigang Liu¹  Hongyi Zhou¹  Yexin Zhang¹  Long Chen¹  Fuchuan Duan²  Yang Song³ 

[1] College of Electrical Engineering Southwest Jiaotong University Chengdu China;College of Transportation Engineering Tongji University Shanghai China;Department of Structural Engineering Norwegian University of Science and Technology Trondheim Norway;

关键词: electric spark discharge;    electrified railway;    pantograph‐catenary electrical contact;    traction power;   

DOI  :  10.1049/els2.12043

来源: DOAJ

【 摘 要 】

Abstract The electric spark caused by pantograph‐catenary (PC) electrical contact failure happens frequently, it is a kind of arcing phenomenon which can severely affect the current collection of PC. The theoretical analysis and modelling of PC electric spark are tried. First, the contact spots between PC and their temperature rise are analysed and derived based on the classical electrical contact theory, respectively. The mechanism of spark discharge is revealed through the analysis of PC voltage difference, and the spark discharge model is proposed combining with the spot temperature rise formula and spark discharge mechanism. Then, in order to obtain some key parameters in an electric spark discharge model, such as contact force and contact current, the structure model of PC and the circuit model of vehicle‐grid are established for the calculation of the spark rate in PC. Finally, the spark rate is calculated and analysed under the different parameters in PC system. The calculation results are verified by the experiment results. Through the presentation of the correlation of electric spark discharge and factors, such as contact force, contact current and material of PC, this study can support the assessment of electrical contact quality in the PC system in future study.

【 授权许可】

Unknown