An orderly charging control method for an electric vehicle fast charging station

Abstract

The invention relates to a method for controlling orderly charging at a fast charging station for electric vehicles, comprising the following steps: S1, obtaining demand information of electric vehicles entering the charging station; S2, scoring charging users based on a fuzzy expert system; S3, according to the scoring results Establish a control model for ordered charging; S4, use the mixed integer nonlinear optimization method to solve the control model in step S3, and obtain the number of electric vehicles that can be charged at the same time and the charging sequence table; S5, according to the obtained charging sequence table. The electric vehicles in the station are controlled in an orderly manner. Compared with the prior art, the present invention uses a fuzzy expert system to score each charging user, which can meet the rapid response requirements of the fast charging station (dynamic when PEV arrives and leaves), and satisfies the user's demand for energy to the greatest extent. , and can be widely used in the field of orderly charging and swapping control of fast charging stations.

Description

technical field [0001] The invention relates to a method for controlling charging at a charging station, in particular to a method for controlling orderly charging at a fast charging station for electric vehicles. Background technique [0002] With the development of the times, energy shortage and environmental damage have gradually become hot issues in modern society, so the introduction of clean energy has become the focus of research around the world. Electric vehicles that use only electric energy and can achieve zero emissions have become a development trend of today's transportation tools. Therefore, the development of clean and efficient electric vehicles is also one of the effective ways to reduce dependence on fossil energy and alleviate air pollution. [0003] Electric vehicles need charging stations to supplement electric energy, and the battery capacity of electric vehicles is generally 20-60KWh. The electric vehicle charging mode is generally divided into thre...

AI Technical Summary

Problems solved by technology

The disorderly charging of electric vehicles in the fast charging station may cause overloading of distribution network lines, voltage drop, distribution transformer overload, distribution network peak-to-valley difference, and the phenomenon of "peak-on-peak" appears

At present, most of the existing orderly charging control of electric vehicles is realized by controlling the charging power, which is difficult to achieve precise control in practical applications, and usually these are mainly from the perspective of the power grid, without considering user satisfaction

Usually electric vehicle fast charging stations adopt a first-come, first-served (FCFS) user charging management strategy. Although this strategy meets the constraints of safe operation of the power grid, it is unreasonable for users who need emergency services and arrive later.

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