Electric vehicle charging station sequential charging control method based on dynamic time-of-use electricity price

Abstract

The invention provides an electric vehicle charging station sequential charging control method based on a dynamic time-of-use electricity price. According to the method, a charging time-of-use electricity price preferential period is obtained through calculation according to the charging requirement of electric vehicles in a charging station and the maximum charging load of a power grid and is provided for clients, and whether charging is started immediately or charging is started till the electricity price becomes lower is selected by the clients themselves so that the purpose of coordination control over sequential charging of the electric vehicles in the charging station can be achieved. By means of the method, it is effectively facilitated that the electric vehicles in the charging station are charged during a night valley electricity price period, and accordingly economic benefits of the electric vehicle station can be improved. Meanwhile, the charging peak load of the charging station can be effectively controlled, and the negative effect of electric vehicle charging on the power grid is reduced to the maximum. A calculation model is simple, computational efficiency is high, and the requirement for hardware environment of a control system is low; because the clients make decisions by themselves once the electricity price is issued at one time, charging can be continuous and reliable, and the negative effect of frequent on-off of chargers in an existing sequential charging strategy on the service life of batteries and the chargers is effectively reduced as well.

Description

technical field [0001] The invention belongs to the technical field of electric vehicle charging control, and in particular relates to an orderly charging control method for electric vehicle charging stations based on dynamic time-of-use electricity prices. Background technique [0002] Electric vehicles, due to their good energy-saving, environmental protection and low emission potentials, have received widespread attention from governments around the world in recent years. In China, the central government and local governments have introduced incentive policies to promote the development and market penetration of electric vehicles. Studies have shown that the large-scale access of electric vehicles in the future will bring a large amount of charging load to the grid, which will have a non-negligible impact on the grid. Especially for the distribution network, if the charging load of a large number of electric vehicles cannot be effectively and orderly coordinated or guide...

AI Technical Summary

Problems solved by technology

According to the investigation of the current domestic installed electric vehicle charging facilities and monitoring systems, there is no specific application similar to the orderly charging control of electric vehicles in the station by dynamically setting reasonable time-of-use electricity price periods.

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