Orderly charging method of electric vehicle group and optimization method of power consumption in distribution network

Abstract

The invention discloses a method for orderly charging of an electric vehicle group and a method for optimizing power consumption of a distribution network. The redundant power among them is divided into several charging grids, and then the orderly charging of the electric vehicle group is realized based on the quick sorting method; the distribution network power consumption optimization method of the above-mentioned orderly charging method is used to divide the residents' basic load, power exchange Fitting the daily load curves of the car single load and the total load of charging car orderly charging, and then choose the optimal charging scheme by calculating and comparing the distribution network total load variance and user charging cost when the optimal value of the upper limit of active power of the distribution network is different . The orderly charging method of the electric vehicle group of the present invention realizes the orderly charging of the electric vehicles and avoids the overload of the distribution network, and the power consumption optimization method of the distribution network provides an optimal charging scheme to reduce the loss of the distribution network and the charging cost of users. The invention is applicable to the field of electric vehicles.

Description

technical field [0001] The invention belongs to the field of electric vehicles, and relates to the field of electric vehicle group charging, in particular to an orderly charging method for electric vehicle groups and a method for optimizing power consumption of a distribution network. Background technique [0002] In recent years, the rapid development of electric vehicles has largely solved the problems of environmental pollution and resource shortage brought by the traditional automobile industry, but it has also brought some new problems, mainly including two points: 1. In the planning of traditional distribution networks It is true that little consideration is given to the charging load of electric vehicles. Therefore, when large-scale electric vehicle loads are connected to the distribution network, it will cause serious peak overlap with the basic load of residents, which will bring huge losses to the distribution network in residential areas; The charging behavior of ...

AI Technical Summary

Problems solved by technology

[0002] In recent years, the rapid development of electric vehicles has largely solved the problems of environmental pollution and resource shortage brought by the traditional automobile industry, but it has also brought some new problems, mainly including two points: 1. In the planning of traditional distribution networks It is true that little consideration is given to the charging load of electric vehicles. Therefore, when large-scale electric vehicle loads are connected to the distribution network, it will cause serious peak overlap with the basic load of residents, which will bring huge losses to the distribution network in residential areas; The charging behavior of electric vehicles is uncertain in time and space, so it is difficult to control

[0003] The current charging methods for electric vehicle groups include: 1. Disorderly charging of electric vehicle groups, that is, "plug and play". It brings higher charging costs to the user side; 2. According to the research on the spatio-temporal characteristics of the charging behavior of the electric vehicle group, the time-of-use electricity price is used to constrain the charging behavior of electric vehicles. This method has been widely promoted at present, but due to Most of the residents' daily routines and working hours overlap, so the charging time of electric vehicles will inevitably be concentrated in a certain period of time, which will cause the loss of distribution network

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