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이응신(Lee Eung-Shin),조용현(Cho Yong-Hyeon),박성용(Park Sung-Yong),전병욱(Jeon Byung-Uk),이장무(Lee Jang Mu) 한국철도학회 2005 한국철도학회 학술발표대회논문집 Vol.- No.-
Recently, higher speeds have been promoted in old overhead-lines. For high-speed operation in electric rail ways, increasing contact loss of the pantograph is one of the most important subjects. The contact loss causes power interruption and increases wear of contact strips and contact wires. In order to investigate the causes of contact loss and to work out effective improvement methods, theoretical analyses, experiments have been carried out. First of all, the wave propagating velocity (phase velocity) and characteristics of contact wire are one of the important indices for the current collecting performance. In this paper, mathematical formula are derived for the prediction of the traveling wave velocity. The measured values in the experiment agree well with the theoretical predictions.