Dynamic Behavior between Rigid-Bar and Pantograph in Electric Railway

초록

An electric train receives power through a contact wire of OHL (Overhead Line System) through the contact with pantograph on the train roof. An OHL is the one of the main subjects for increasing speed of electric railway. The system is divided into Catenary System and Rigid-Bar System. While the Catenary System is mainly used in open route and high-speed line, the Rigid-Bar System is mainly adapted in tunnel with the speed below 110km/h. Because a tunnel cross-section area with the Rigid Bar system can be reduced comparing with the Catenary System, the system has advantage of tunnel construction budget. In Korea, the Catenary System has been studied for a speed-up since 1990s and the system for the speed of 400km/h is constructed in Honam High-speed railway. However Rigid-Bar system is dependent on imports and operated with the below 110km/h. Therefore in this paper, in order to make the basis of the development and speed-up for a Rigid-bar system, a current collection performance of Rigid-Bar system was evaluated. A contact force between the system and pantograph was measured for the evaluation of the current collection performance. A contact force variation analysis, FFT analysis of the force and so on are also analyzed for the speed-up and better current collection.