Collaborative Optimization of Electric Bus Fleet Replacement and Charging Facility Layout
The electrification of urban public transportation represents an imperative trend in the development of the public transit sector,offering a means to effectively mitigate air pollution caused by fuel-powered vehicles and reduce dependency on fossil fuels.In this study,we integrated the replacement of electric bus fleet and the layout of charging facilities,aimed at formulating a holistic solution for urban public transportation electrification.To minimize the combined life-cycle costs of the electric bus fleet and the layout costs of charging facilities led to the development of an integrated optimization model.This model coordinates the replacement of electric bus fleet and the layout of charging facilities,taking into consideration both temporal and spatial dimensions.Leveraging the characteristics of the model,the collaborative optimization model was transformed into a mixed-integer linear programming model using equivalence-linear transformation.To validate the applicability of the collaborative optimization model,numerical experiments with different parameter values were conducted using the public transportation network in Jiangyin City,Jiangsu Province as a case study.The research results indicate that under the specified parameter configuration,the collaborative optimization solution yields a reduction of 467 044.3 RMB in the total cost of the combined bus fleet replacement and charging facility layout compared to separate optimization strategies.This demonstrates better cost-effectiveness of the collaborative optimization method.When budget is limited and emission restrictions are not strict,public transportation operators tend to purchase fuel-powered buses that have a price advantage.As battery technology advances,the anticipated decrease in the purchase price of electric buses is poised to drive a gradual decline in the procurement of fuel-powered and hybrid buses.This shift reflects a growing preference for more environmentally friendly electric buses.Furthermore,the electrification process of the bus fleet must be coordinated by deploying charging facilities to ensure that the charging demands of electric buses can be satisfied.The government can encourage operators to accelerate the electrification process of the bus fleet by increasing the social cost of carbon dioxide.The results provide decision support for operating and managing urban bus fleet,as well as deploying charging facilities,and offer policy recommendations for promoting the electrification of urban public transportation.
traffic engineeringelectrification of public transportationcollaborative optimization modelbus fleet transitioncharging facility layout
万方数据
维普
