关键词: 电动汽车, 目的地充电站, 充电设施, 优化配置, 排队论

Abstract: To study the facilities optimization problem of destination charging station in urban business districts, this paper sufficiently considered the differences of charging time of fast and slow charging facilities as well as the heterogeneity of customers accepting the charging time, the queuing theory model about two kinds facilities was proposed, which had connected the same kind facilities together as a large service facility. And this paper could verify the feasibility of the parallel idea through the comparison analysis of some index values of the queuing model M/M/1 and M/M/n. Then, this paper would take the fast and slow charging facilities after parallel into the queuing system model of multiple services with unequal window capabilities, and take the calculated arrival rate and demand probability of fast and slow charging facilities as the parameters to work out steady-state equations and some related index values, and then take those result into the optimized objective function of this queuing model, which was established with the minimum cost for the builders and users, to obtain the optimization result. Finally, through illustrative examples and comparison it proved that this method in the paper had a certain feasibility and superiority.

Key words: electric vehicles, destination charging stations, charging facilities planning, optimal allocation, queuing theory