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http://dx.doi.org/10.5370/KIEE.2011.60.3.552

A Study on the Variation of Magnetic Field Intensity and Short Current by Coating Material of Spray in AF Track Circuits  

Kim, Min-Seok (서울과학기술대학교 철도전문대학원 철도전기신호공학과)
Oh, Sea-Hwa (서울도시철도공사)
Park, Yong-Gul (서울과학기술대학교 철도전문대학원 철도건설공학과)
Lee, Jong-Woo (서울과학기술대학교 철도전문대학원 철도전기신호공학과)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.60, no.3, 2011 , pp. 552-559 More about this Journal
Abstract
There is a method for offering continuous information by AF track circuits. Magnetic fields are formed by current through rails in the AF track circuit systems. So, the continuous information is received by the magnetic fields on a on-board antenna. Coating materials of spray on rails are researched to decrease defects such as head check, shelling, corrugation, squats and so on in Germany. Currently, a coating method of rail construction is proposed by using the ceramics in Korea. When deciding physical characteristic of the coating material of spray, researches are required about variation of flux density and resistivity by using the coating material of spray. In case that the flux density is much lower than existing value, the information for train control is not transmitted to the on-board antenna. In this paper, inductance on rails is calculated and a model is presented about variation of the magnetic field intensity and resistivity in the AF track circuit. Standard permeability of the coating material of spray is proposed. Also, standard resistivity of the coating material of spray is presented by analyzing short current.
Keywords
AF track circuit; Magnetic field intensity; Coating material of spray; Relative permeability; Resistivity;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
Times Cited By SCOPUS : 0
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