Ordered charging control method for fast charging station of electric vehicles

Abstract

The invention relates to an ordered charging control method for a fast charging station of electric vehicles, comprising the following steps: S1, obtaining the electric vehicle demand information of the charging station inbound; S2, scoring the charging users based on the fuzzy expert system; S3, establishing a control model of orderly charging accord to the scoring result; S4, solving the controlmodel in the step S3 by using a mixed integer nonlinear optimization method to obtain a quantity and a charging sequence table of the electric vehicle which can be charged at the same time; and S5, performing ordered charging control on the electric vehicle in the charging station according to the obtained charging sequence table. Compared with the prior art, the ordered charging control method for a fast charging station of electric vehicles adopts the fuzzy expert system to score each charging user, which can meet the fast response demand of the fast charging station (dynamic when the PEV arrives and leaves), meets the energy demand of the user to the maximum extent, and can be widely applied to the field of the orderly charging and exchanging control of the fast charging station.

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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