关键词: 交通工程, 递阶延时布局, 截流选址模型, 充电站, 续航能力

Abstract:

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.

Key words: traffic engineering, hierarchical delay layout, closure site selection model, charging facilities, endurance capacity