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http://dx.doi.org/10.7782/JKSR.2017.20.1.31

Study of Electric Charge Saving Plan Using High-speed Charging Wireless Railway System  

Go, Hyo-Sang (Propulsion System Research Team, Korea Railroad Research Institute)
Cho, In-Ho (Propulsion System Research Team, Korea Railroad Research Institute)
Ryu, Joon-Hyoung (Propulsion System Research Team, Korea Railroad Research Institute)
Kim, Gil-Dong (Propulsion System Research Team, Korea Railroad Research Institute)
Publication Information
Journal of the Korean Society for Railway / v.20, no.1, 2017 , pp. 31-42 More about this Journal
Abstract
Many studies have been performed to reduce electric consumption in railway systems. Due to its low conduction loss and high regenerative braking efficiency characteristics, the ESS powered railway system is chosen as a promising candidate for future railway systems. This paper introduces the ESS powered railway system and analyzes current power charge calculation methods that have been set up by KEPCO (Korea Electric Power Corporation). Based on the analysis, this paper proposes two different power charge reduction methods for the railway system. One is to smooth the peaks of traction energy consumption by supplying additional energy to the grid. The other is to save electric charge by reducing electric energy consumed by the railway during the energy peak time, 2 p.m.~5 p.m., which has highest 'Won/kWh' rates. To verify the effectiveness of the proposed method, the power charge of Seoul Metro Line 2 is recalculated using the method.
Keywords
Wireless Railway; High-speed Charging Technology; ESS (Energy Storage System); Power Demand; Electricity Prices (TOU);
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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