A STUDY ON THE EVALUATION OF THE CURRENT COLLECTION SYSTEM OF THE KOREAN HIGH-SPEED TRAIN USING A REMOTE CONTROLLED MEASURING TECHNIQUE

초록

The Korean High-Speed Train(KHST) had been developed by through ˝G7­R&D project“ in 1996-2002, and it has been carrying the performance test and reliability evaluation on the High Speed Line till now. On the KHST, made of aluminum extruded structural components, a number of core equipments, such as propulsion inverters, braking system, train control & signalling device and pantograph for current collection from AC 25kV catenary system, which had been designed and developed by Korean domestic technologies were boarded. In order to verify the performance and characteristics of KHST, sophisticated testing and measuring equipments were needed, and various experimental conditions should be considered. In this paper, the remote controlled measuring techniques and test results about the current collection characteristics of KHST pantograph with the catenary system are introduced. Firstly, the remote controlled measuring system, having a data sensing/conditioning module, a data telecommunication module, and a data receiver module, was used for the assessment of performance and characteristics of the KHST pantograph. It was developed so as to measure the acceleration and strains of several points in main frame of pantograph, contact force between the pantograph and contact wire when the KHST runs up to 350km/h. Secondly, as the test and analysed results, the mean contact force and it's variation trend of pantograph to the contact wire according to the train speed, characteristics of loss of contact, up-lifting height of contact wire and the lateral movement of contact point between the pantograph pan head and contact wire were obtained. Through the evaluation research using remote controlled measuring technique, we successfully verified that KHST had a remarkable and excellent current collection performance and mechanical characteristics as it had been designed."