计及行车计划编制的电动公交车有序充电策略

为了提高电动公交车的经济性并兼顾公交车和电网的利益,需综合考虑电动公交车的充电策略和行车计划编制问题.首先,生成满足时间接续关系和电池电量约束的可行车次链,建立以充电成本最低为优化目标的可行车次链有序充电阶段1模型和以总运营成本最低为优化目标的最优车次链选择模型;然后,分别以白天和夜间充电负荷波动最小为优化目标,建立最优车次链有序充电阶段2模型和夜间充电二次规划模型;最后,以一条公交车线路为例对所提模型进行验证,结果表明所提模型和方法能满足公交车公司制定行车计划的需求,实现了电动公交车总运营成本最低的目标,同时通过有序充电达到了减少充电成本和平抑充电负荷波动的目的,对指导电动公交车制定充电策略和行车计划具有重要的参考价值.

Coordinated charging strategy of electric bus considering driving plan

In order to improve the economy of electric bus and take into account the benefits of public transport and power grid, the charging strategy and driving plan of electric bus should be considered comprehensively. Firstly, feasible vehicle chains satisfying the constraints of time connection relationship and battery capacity are generated, and the coordinated charging stage 1 model of feasible vehicle chain with the minimum charging cost as its optimization objective and the optimal vehicle chain selection model with the minimum total operation cost as its optimization objective are established. Then, with the minimum fluctuation of charging load during the day and night as the optimization objective, the coordinated charging stage 2 model and the quadratic programming model of night charging for the feasible vehicle chain are established respectively. Finally, taking a bus line as the example to verify the proposed model, the results show that the proposed model and method can meet the demand of bus companies to make driving plans, achieve the goal of the lowest total operation cost of electric buses, and achieve the purpose of reducing charging cost and suppressing charging load fluctuation through coordinated charging, which has important reference value for guiding electric buses to make charging strategy and driving plan.