RTRI REPORT December 2001
PAPERS

Analysis for Span Cycle Motion of Catenary - Pantograph System by an Elastically Supported String Model

Mitsuo ABOSHI


  One of the most important subjects for the catenary-pantograph system is to reduce the contact force fluctuation in high-speed operation. In this paper, the motion and the contact force fluctuation in a span cycle is theoretically analyzed with a proposed model, which is represented by a tensioned string and a partially arranged elastic supporting system. The precision of the analysis, the wave transmitting characteristics at support points and the damping factor of the wires are investigated. It is shown that the analyzed results agree well with the results of simulation and field tests, and that the resonance speed is almost 0.4 times the wave propagating velocity of overhead lines. It is expected that this analysis method is able to evaluate quantitatively the motion and the contact force fluctuation in a span cycle.


* Full papers of RTRI Report are written in Japanese.

Copyright (c) 2001 Railway Technical Research Institute