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- 저자 : Kiwon Lee(이기원) (검색결과 217 건)
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속도향상에 따른 열차속도와 전차선 파동전파속도에 대한 실험적 연구
이기원(Kiwon Lee) 대한전기학회 2013 전기학회논문지 Vol.62 No.12
An overhead catenary system is the one of the main subjects for increasing speed in electric railway. When a vehicle increases the speed over 350km/h, vibrations and wave propagation reflections occur severely. Therefore, the system suitable for the speed are needed. A wave propagation speed of contact wire is the main criteria to determine the tension for the system. Therefore, a train speed is restricted below 70% of wave propagation speed of it in European railway code. In this study, we measured a strain and uplift of contact wire while HEMU-430X tain is operated for the speed-up trial test in Kyungbu high-speed railway. The measured strain and uplift are analyzed with wave propagation speed according to the speed-up. The more a train speed reaches to a propagation speed, the more measured strain is high. Through the study, an experimental approach is performed about the code which a train speed is restricted below 70% of wave propagation speed of it.
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이기원(Kiwon Lee),권삼영(Samyoung Kwon),김주락(Joorak Kim),창상훈(Sang-Hoon Chang) 한국철도학회 2003 한국철도학회 학술발표대회논문집 Vol.- No.-
Even if tracks cross each other, a train has to maintain a good current collection. Where catenary cross each other, it is called a crossover. Based on the cause analysis for a breakdown accident of pantograph occurred in the crossover on Ansan-line, a theoretical background and recommendation for the installation rule of a crossover are presented in the paper.
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이기원(Kiwon Lee),김주락(Joorak Kim),권삼영(Sam-Young Kwon),창상훈(Sang-Hoon Chang) 한국철도학회 2004 철도저널 Vol.7 No.2
This study presents a development of DeCatS(Detail Design of High Speed Catenary System) which is a software to design high speed catenary system automatically. The program is developed by Korea Railroad Research Institute with the support of KHSR. A process of developing it and a comparison with LEXCAT, in order to demonstrate a preciseness of that, were performed. In the program, decision of H-beam, cantilever fitting, management of materials, automatic drawing and etc. according to input conditions can be accomplished. In this study, especially the program algorithm for the decision of mast was introduced.
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