A Time-phased Order Charging Strategy for an Electric Vehicle Photovoltaic Charging Station

Abstract

[Introduction] Aiming at the problem of orderly charging of electric vehicle photovoltaic charging stations, the paper aims to establish a bucketed order charging strategy. [Method] The structure and working principle of the electric vehicle photovoltaic charging station were studied, and the charging conditions of the electric vehicle and the state of charge of the energy storage battery were constructed. During the peak load period, while meeting the vehicle charging demand, reduces the power grid purchases and the cost of electricity purchase, assisted the power grid to “eliminate the peak”. During the low load period, while meeting the vehicle charging demand, increased grid purchases and assists the power grid to “fill the valley”. [Result] The validity of the model is verified by simulation examples, compared with instant charging solutions, shows the advantages of the builted model in reducing the cost of electricity purchase and reducing the peak-to-valley difference of the power grid. [Conclusion] The charging strategy of the proposed electric vehicle photovoltaic charging station is correct and effective, and can provide reference for practical applications.

Keywords

• electric vehicles
• photovoltaic
• orderly charging
• peak load shifting