Study of a New Quick-Charging Strategy for Electric Vehicles in Highway Charging Stations

Lixing Chen, Xueliang Huang, Zhong Chen and Long Jin
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Lixing Chen: School of Electrical Engineering, Southeast University, No. 2 Sipailou, Nanjing 210096, China
Xueliang Huang: School of Electrical Engineering, Southeast University, No. 2 Sipailou, Nanjing 210096, China
Zhong Chen: School of Electrical Engineering, Southeast University, No. 2 Sipailou, Nanjing 210096, China
Long Jin: School of Electrical Engineering, Southeast University, No. 2 Sipailou, Nanjing 210096, China

Energies, 2016, vol. 9, issue 9, 1-20

Abstract: To solve the problem, because of which conventional quick-charging strategies (CQCS) cannot meet the requirements of quick-charging for multiple types of electric vehicles (EV) on highways where vehicle inflow is excessive, this paper proposed a new quick-charging strategy (NQCS) for EVs: on the premise of not affecting those EVs being charged, the remaining power of the quick-charging pile with multiple power output interfaces is used to provide a synchronous charging service for EVs waiting in the queue. To verify the effectiveness of this strategy, a power distribution model of charging pile and a queuing model of charging station (CS) were constructed. In addition, based on an actual highway service area where vehicle inflow is excessive during the simulation period (0:00–24:00), charging situations of CQCS and NQCS were respectively simulated in a charging station (CS), with different number of chargers, by basic queuing algorithm and an improved queuing algorithm. The simulation results showed that when the relative EV inflow is excessive, compared to CQCS, NQCS not only can reduce user waiting time, charging time, and stay time, but also can improve the utilisation rate of charging infrastructure and service capacity of CS and reduce the queue length of CS. At the same time, NQCS can reduce the impact on the power grid. In addition, in NQCS, the on-demand power distribution method is more efficient than the average power distribution method. Therefore, NQCS is more suitable for quick-charging for multiple types of EVs on highways where vehicle inflow is excessive.

Keywords: highway; quick-charging; electric vehicles; power distribution; improved queuing algorithm (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: 2016
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (9)

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