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http://dx.doi.org/10.5370/KIEE.2011.60.4.892

A Study on the Real Time Measuring Technique of Stray Current by Using Return Current Ratio in the DC Railway System  

Jung, Ho-Sung (한국철도기술연구원 전철전력연구실)
Park, Young (한국철도기술연구원 전철전력연구실)
Kim, Hyeng-Chul (한국철도기술연구원 전철전력연구실)
Min, Myung-Hwan (성균관대 전기전자 및 컴퓨터학과)
Shin, Myong-Chul (성균관대 전기전자 및 컴퓨터학과)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.60, no.4, 2011 , pp. 892-898 More about this Journal
Abstract
In DC electric railways, while an electric rail car is driving, a part of the working current returned to the substation through rails leaks into the ground. Such a stray current causes railway facilities and metal objects to corrode electrolytically. Therefore, change of stray current needs to be monitored constantly. But so far in domestic, the research on stray current measuring techniques and system adaption are insufficient. To estimate stray current, this paper addresses a method of monitoring the return current that is returned into the negative pole of the substation in real time.
Keywords
DC Railway system; Electrolytic corrosion; Rail potential; Return current ratio; Stray current;
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  • Reference
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