팬터그래프와 전차선 사이의 이선 예측을 위한 본선시운전시 최소접촉력 기준 수립

초록

We have performed on-line pantograph tests for a proto-type high-speed test track in Korea since July of 2002. We reached 200km/h on Nov.7, 2002. In this study, we tried to measure aerodynamic forces on contact strips of a pantograph at 200km/h using two load cells for lift forces and two load cells for strip supporting forces, respectively. According to the results, approximately 46% of aerodynamic forces were applied on the strips. Therefore, the aerodynamic forces on the strips should be taken into account in order to get more accurate contact force estimations at a speed higher than 200km/h. We repeatedly found that sudden drops of estimated contact forces were good indicators to predict the loss of contact between a pantograph and a contact wire. Based on the pantograph dynamic test results at 200km/h, it is probabilistic to say that 40N of minimum contact force criterion can be used to predict the loss of contact."