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http://dx.doi.org/10.7782/JKSR.2015.18.3.232

A Study on Interference between High Voltage Impulse Track Circuit(HVITC) and AF Track Circuit  

Lee, Hee-Jin (Department of Railway System, Seoul National University of Science and Technology)
Lee, Jong-Woo (Department of Railway Electrical and Signaling Engineering, Seoul National University of Science and Technology)
Publication Information
Journal of the Korean Society for Railway / v.18, no.3, 2015 , pp. 232-240 More about this Journal
Abstract
Two types of track circuits are used in high speed railway car depots: one is High Voltage Impulse Track Circuit(HVITC); the other is AF track circuit. HVITC detects train occupation of blocks and broken rail; the AF track circuit is used for train onboard control system pretesting before departure. This testing is used to transmit train control information through the AF track circuit. The two systems are switched in turns for testing. We propose a system in which the AF track circuit is replaced by a loop cable that is installed on the inside rail; as such, engineers do not need to switch the systems. In cases in which the two systems run simultaneously, mutual interference may occur. In this paper, we identified this mutual interference by modeling of the two circuits.
Keywords
HVITC; UM71C; mutual interference; magnetic coupling;
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  • Reference
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