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Civil-Comp Proceedings
ISSN 1759-3433
CCP: 104
Edited by: J. Pombo
Paper 141

Influence of High Speed Railway Catenary Overlap Span on the Current Collecting Performance

J. Zhang, W. Liu and M. Yu

Department of Electrical Engineering, School of Electrical Engineering, Beijing Jiaotong University, China

Full Bibliographic Reference for this paper
J. Zhang, W. Liu, M. Yu, "Influence of High Speed Railway Catenary Overlap Span on the Current Collecting Performance", in J. Pombo, (Editor), "Proceedings of the Second International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 141, 2014. doi:10.4203/ccp.104.141
Keywords: catenary, pantograph, overlap span, finite element method, current collection, contact force, contact wire tension, span length.

When a pantograph runs to the overlap span of the catenary, the contact force of the pantograph-catenary and the uplift of the pantograph will have a greater change as the pantograph touches the double contact wires when running at high speed. This especially happens to the rear pantograph, when the double-pantograph runs, producing much worse conditions for current collection. Firstly, a Euler-Bernoulli flexible beam catenary model and a three-mass-block pantograph model are established using the MSC.Marc software adopting: the finite element method, and the solutions of the pantograph-catenary coupling dynamic differential equations are obtained using the Houbolt numerical integration method. Secondly, the current collecting performance of the four-span insulated overlap span when the contact wire tension and span length happen to change is discussed. The current collecting characteristic is analyzed and contrasted when the singer-pantograph and doublepantograph are used. The influence of the design parameters on the change in current collection performance is obtained by analyzing the results of the calculations.

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