Charging and discharging optimization control method for electric automobile group

Abstract

The invention provides a charging and discharging optimization control method for an electric automobile group. The method comprises the following steps of acquiring next-day charging and dischargingtime period data of each automobile participating in charging and discharging; discretizing next-day time into a plurality of time slots and generating a time slot set according to the next-day charging and discharging time period data of all the automobiles; acquiring electric power flow data and sensitivity data of each time slot in the time slot set; calculating the charging and discharging power of each automobile in each time slot by means of an internal point approach according to the sensitivity data. By means of the charging and discharging optimization control method, voltage fluctuation is reduced, peak-to-valley differences of loads are reduced, the losses of a power distribution network are decreased, and economic benefits of users of the electric automobiles are increased.

Description

technical field [0001] The invention relates to the technical field of electric vehicle charging, in particular to a charging and discharging optimization control method for electric vehicle groups. Background technique [0002] Electric vehicles can reduce human's dependence on oil resources. With the depletion of global oil resources, electric vehicles are favored compared with traditional fuel vehicles. With the rapid development of electric vehicle technology, it is welcomed by more and more people due to its less pollution and low operating cost, and the market share of electric vehicles is increasing. With the development of electric vehicles, electric vehicle charging stations are gradually being built, which will bring new load growth to the development of charging facilities and the operation of the power grid. [0003] When multiple vehicles are charged in a fixed charging mode at each charging station, for example, when charging in a constant current-constant vol...

AI Technical Summary

Problems solved by technology

[0003] When multiple vehicles are charged in a fixed charging mode at each charging station, for example, when charging in a constant current-constant voltage-trickle mode, the load fluctuation of the grid system will increase, and the existing voltage control measures are difficult to meet the user's requirements for voltage limitation; Moreover, the concentrated power consumption of strong random loads leads to an increase in the peak load of the system, resulting in insufficient installed capacity of the power system

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