The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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A Study on the Contact Power by Coating Material of Spray in AT Feeding Method

AT급전방식에서 코팅재에 의한 접촉전력에 대한 연구

  • 김민석 (서울과학기술대학교 철도전문대학원 철도전기신호공학과) ;
  • 김민규 (서울메트로 신호팀) ;
  • 박용걸 (서울과학기술대학교 철도전문대학원 철도건설 공학과) ;
  • 이종우 (서울과학기술대학교 철도전문대학원 철도전기신호공학과)
  • Received : 2010.09.29
  • Accepted : 2010.11.26
  • Published : 2011.01.01
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Abstract

Main characteristic in railroad is the guided movement of the wheel by the track through a metal-to-metal contact, conferring to the rail vehicle a single degree of freedom. There are defects such as head check, shelling, corrugation, squats etc in surface of the rail by interface between the wheel and rail. These defects bring about reducing the life-cycle of rails and track components and increasing noises. In case of bad conditions, it is possible to happen to full-scale accident such as derailment. Recently, the track capacity has been increased for increasing speed and operation efficiency. So, maintenance and indirect cost have been increased. Currently, a coating method of rail construction is proposed by using the ceramics in Korea. Rails are used as the earth in electrical railroad systems. Currently traction return current is flowed through wheels of trains. In case of rails coated, problems are caused in the contact power between wheel and coating material of spray. In this paper, electric model is presented in the AT feeding method. In case of rails coated, electric model is presented. Also, standard resistance of the ceramic is demonstrated by contact power between wheel and coating material of spray.

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References

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