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Simulation and Testing of the Effect of Current Collection Performance According to Pre-sag in 400km/h Overhead Contact Lines

400km/h 전차선로에서 사전이도가 집전성능에 미치는 영향에 대한 시뮬레이션 및 시험

  • Received : 2015.09.28
  • Accepted : 2016.04.08
  • Published : 2016.06.30

Abstract

A 400km/h simple catenary system was constructed as a test line in Korea. In the design stage of this system, the pre-sag was one of the engineering issues most focused on. It is known that the pre-sag improves the current collection performance in a certain band of high speed. However, the effect of pre-sag at 400km/h has not yet been established. To grasp a better pre-sag in the 400km/h catenary, we transacted the dynamic performance prediction simulation between catenary and pantograph under conditions of 0 and 1/3000 pre-sag. The level of 0 pre-sag was adapted for the 400km/h catenary design after reviewing predictions. We constituted the 1/3000 pre-sag sample section (about 1km) while constructing the 400km/h catenary test-bed (28km) of 0 pre-sag. With a HEMU-430X train, the contact forces were measured in the test-bed including the pre-sag sample section. In this paper, the predicted and measured dynamic performance values (contact forces) for 0 and 1/3000 pre-sag are described and compared. It is conclusively confirmed by analytical and experimental examination that the non pre-sag showed better dynamic (current collection) performance than that of the 1/3000 pre-sag for the 400km/h catenary system.

Keywords

Pre-sag;400km/h catenary;Current collection;400km/h test-bed;HEMU-430X

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Acknowledgement

Grant : 경량 저소음 팬터그래프 개발, 증속에 따른 전차선로 시스템 기술개발

Supported by : 한국철도기술연구원, 국토교통과학기술진흥원