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http://dx.doi.org/10.5207/JIEIE.2010.24.6.138

Modeling for the Analysis of Rail Potential in the DC Railway Power System  

Cho, Woong-Ki (서울산업대학교 철도전문대학원, (주)한얼엔지니어링)
Choi, Kyu-Hyoung (서울산업대학교 철도전기신호공학과)
Publication Information
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers / v.24, no.6, 2010 , pp. 138-146 More about this Journal
Abstract
DC railway power supply system generally uses the running rails as negative-polarity return conductor for traction load current, and the induced rail potential and stay current cause serious problems to any electrified matter in the underground and also safety problems to human body. This paper presents a new algorithm for the analysis of the rail potential and the stray current in DC railway power system operated under independent/parallel power feeding mode. The effect of load current fluctuation during train operation is also calculated by using TPS(Train Performance Simulation) program to analysis the variation of the railway potential and stray current along railway track. Simulation program is developed based on the proposed algorithm and case studies are provided.
Keywords
DC Electrical Railway; Rail Potential; Stray Current;
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