Optimal Charging Schedule Planning and Economic Analysis for Electric Bus Charging Stations

Rong-Ceng Leou and Jeng-Jiun Hung
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Rong-Ceng Leou: Department of Electrical Engineering, Cheng Shiu University, Kaohsiung 83347, Taiwan
Jeng-Jiun Hung: Department of Electrical Engineering, Cheng Shiu University, Kaohsiung 83347, Taiwan

Energies, 2017, vol. 10, issue 4, 1-17

Abstract: The battery capacity of electric buses (EB) used for public transportation is greater than that of electric cars, and the charging power is also several times greater than that used in electric cars; this can result in high energy consumption and negatively impact power distribution networks. This paper proposes a framework to determine the optimal contracted power capacity and charging schedule of an EB charging station in such a way that energy costs can be reduced. A mathematical model of controlled charging, which includes the capacity and energy charges of the station, was developed to minimize costs. The constraints of the model include the charging characteristics of an EB and the operational guidelines of the bus company. A practical EB charging station was used to verify the proposed model. The financial viability of this EB charging station is also studied in this paper. The economic analysis model for this charging station considers investment and operational costs, and the operational revenue. Sensitivity analyses with respect to some key parameters are also performed in this paper. Based on actual operational routes and EB charging schemes, test results indicate that the EB charging station investment is feasible, and the planning model proposed can be used to determine optimal station power capacity and minimize energy costs.

Keywords: contracted capacity; controlled charging; charging schedule; electric bus; economic analysis (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: 2017
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (19)

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