考虑续航能力的新能源汽车充电站递阶延时布局研究

递阶延时布局对降低新能源汽车充电站选址成本投资决策具有重要作用.本文分析递阶延时布局特征：空间维，以续航能力为半径的邻域衔接覆盖性；时间维，随交通流密度的双螺旋同步增长性；投资维，公共资源配置的有效性.在此基础上，基于截流选址方法建立扩展的OD交通路网，构建续航能力约束下的递阶延时布局优化模型；利用改进的逐步推进法求解，对实际案例进行测试和应用，以及相应投资决策分析.结果表明：递阶延时建设可以节约投资，资金成本越高效果越明显；续航里程增加可以减少充电站建设数量，达到节约投资的目的.本文为实际区域递阶延时充电站布局提供决策依据.

A Hierarchical Delay Layout Model for Electric Vehicle Charging Stations Considering Cruising Capability

A hierarchical delay layout strategy exhibits great potential for reducing the investment costs of electric charging stations. This paper first analyzes the specific characteristics of the hierarchical delay layout strategy, i.e., the space dimension with the endurance capacity radius to realize the neighborhood connection coverage, the time dimension with the double- helical synchronous growth of the traffic flow, and the financial dimension with the efficient allocation of public resources. A hierarchical delay layout optimization model is formulated with an extended OD traffic network based on the closure site selection method. The model is solved by a newly designed stepwise- boosting algorithm. Real cases are adopted to verify the proposed model and algorithm. And the investment effects are analyzed. Experimental results reveal that the hierarchical delay layout strategy can save the public investments. In specific, the higher the investment is, the larger saving effects would be obtained. The longer the vehicle travel range is, the smaller number of the charging stations would be deployed, which contributes to the investment saving for charging stations. In general, this research would provide certain enlightenments in the practical hierarchical delay layout movement for regional charging station investment decisions.