Analysis of the Major Design Parameters of a Pantograph-Railway Catenary System for Improving the Current Collection Quality

집전성능 향상을 위한 팬터그래프-전차선의 주요 설계 파라미터분석

  • Cho, Yong Hyeon (Metropolitan Transportation Research Center, Korea Railroad Research Institute)
  • Received : 2013.06.28
  • Accepted : 2013.11.28
  • Published : 2014.02.28


Stiffness variations and wave propagation/reflection in railway catenaries are the primary sources of contact loss between a pantograph and a railway contact wire. This paper analyzes which design parameter is more important for 200km/h conventional rail and 300km/h high-speed rail, in order to effectively reduce the contact loss. For the high-speed rail, the wave propagation and reflection in the overhead contact lines are more influential than the stiffness variation over a span. When the high-speed rail needs to speed-up, it is necessary to develop higher strength contact wires in order to increase the wave propagation speed. In addition, the dropper clamp mass should be reduced in order to alleviate the wave reflection. However, it is noted that the increase in the tension to a messenger wire could deteriorate the current collection quality, which contrasts with expectations. For the 200km/h conventional rail, the stiffness variation over a span is more influential than the wave propagation and reflection. Therefore, shortening span length, increasing the tension in the contact wire and optimizing the location of the droppers are recommended for a smoother stiffness variation over the span.


Grant : 증속에 따른 전차선로 시스템 기술개발

Supported by : 국토교통부


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