A real-time mechanism as a level of electricity price is proposed to dispatch electric vehicle fast charging load. Considering the peak load shifting effect of grid, the benefit of charging station and the desire of customer, the mathematics model is built. And a genetic algorithm is used to solve this problem. Finally, a simulation based on an areas predicted data of year 2020 is made to show that the proposed method can lower the peak-valley difference, promise charging station benefit as well as meet customers desire, and achieve a win-win result.

This paper describes the basic principles of dipartition of the power supply area and uses Voronoi diagram on the dipartition of the power supply area. This paper put forward a model of improved Voronoi diagram based on the basic Voronoi diagram. Depending on the existing transformer substation’s capacity and power supply area surrounding the spatial distribution of the load, we determine weights based on the main transformer capacity and the spatial distribution of the load. In the process of generating the power supply area, we adjust the weights depending on different regions ofthe spatial distribution of heavy load to generate the power supply area based on improved Voronoi diagram model. Then we adjust according to the basic principles of the power supply area and the result based on improved Voronoi diagram model to generate the final result. Compared to the traditional division based on artificial experience, it can reflect rationality of the power supply, improve the accuracy of the partition.