전차선로 동적/전기적 특성평가 시스템 구현 기술 분석

초록

Condition monitoring systems of electric railways that transmit dynamic and electrical conditions of railway structures real-time are being developed to improve applicability to railway systems, increase functions, and reduce costs. 25kV is applied to AC sections of overhead contact lines and pantographs of Korea Train eXpress(KTX) make contact at speeds of 300km/h. Thus, there is a need to utilize wireless, optic, contact-less sensors to implement condition monitoring systems. This paper describes and analyzes the trend of condition monitoring system implementation technologies for efficient overhead contact line characteristic assessment and dynamic/electric characteristic assessment technologies such as vertical displacement, variation coefficient, vibration, and contact wire/suspension wire temperature and current measurement were mainly described. The results of this paper should be widely applied to design, diagnosis, completion of construction, current collection status, fault diagnosis, and selection of contact wires and suspension wires.