Research on Coordinated Charging Strategy for Electric Bus Battery Swapping Stations

As a new type of transport, electric vehicles are becoming an important way to implement the energy and sustainable development of the city. Aiming at the Battery Swapping Stations (BSS) for electric buses, a strategy for coordinated charging is proposed to reduce the charging cost and decrease the load peak-valley difference of Distribution Network (DN). The load model of BSS is built based on the operation analysis of BSS and the charging data of batteries. The optimization of charging behavior imposed by the coordinated charging strategy is also presented. Finally, studies are carried out considering the Beitucheng BSS (for Beijing Olympic Games); analyses are also presented considering different number of batteries to take into account the actual configuration. Simulations show that the coordinated charging, vis-a-vis uncontrolled charging provides satisfactory results, not only reducing the charging cost but also decreasing the load peak-valley difference of DN.