Quarterly Report of RTRI
Online ISSN : 1880-1765
Print ISSN : 0033-9008
ISSN-L : 0033-9008
PAPERS
Measurement and Estimation of Contact Wire Unevenness
Sei NAGASAKAMitsuo ABOSHI
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2004 Volume 45 Issue 2 Pages 86-91

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Abstract

The unevenness of contact lines is one of the factors that greatly influence the dynamic characteristics of current collection systems. In order to analyze the influence of the contact line unevenness on the contact force fluctuations between contact lines and pantographs, an instrument was devised to measure the unevenness of contact lines both accurately and continuously. The instrument consists of two pairs of laser sensors to reduce measurement errors caused by the vertical vibration of the measurement vehicle. This paper describes a way of measuring contact line unevenness, reports on some results obtained from measuring actual lines, and proposes a method to evaluate the conditions of overhead contact lines.

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© 2004 by Railway Technical Research Institute
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