Reduction of Electricity Prices Using the Train to Grid (T2G) System in Urban Railway

Hyo-Sang Go, In-Ho Cho, Gil-Dong Kim and Chul-Hwan Kim
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Hyo-Sang Go: Korea Testing Laboratory, Seoul 100744, Korea
In-Ho Cho: Korea Railroad Research Institute, Uiwang 160161, Korea
Gil-Dong Kim: Korea Railroad Research Institute, Uiwang 160161, Korea
Chul-Hwan Kim: College of Information and Communication Engineering, Sungkyunkwan University; Seoul 100744, Korea

Energies, 2018, vol. 11, issue 3, 1-17

Abstract: Smart transportation technologies are being rapidly developed for enhancing the smart grid establishment. Such technologies are mostly focused on electric vehicles. However, the electric railroad has advantages in various aspects such as facility construction and utilization over an electric vehicle. Therefore, in this paper, we introduce the train-to-grid system using the electric railroads for the smart grid, and propose a reduction method for the electricity prices. The proposed method obtains actual data from the currently operating railroad systems. Furthermore, the number of trains for charging and discharging batteries is decided by using the time-of-use price and the number of railroad operations. The electricity prices are then determined by the energy consumption calculated using the number of trains used for charging and discharging and the capacity of the energy storage system in the trains. The proposed method is simulated using real data, and its superiority is verified by comparing its electric prices with the conventional electricity prices.

Keywords: electricity prices; energy storage system; train to grid (T2G) (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
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