Method for optimizing charge and discharge power of electric car charge-storage-discharge integrated power station

Abstract

The invention provides a method for optimizing charge and discharge power of an electric car charge-storage-discharge integrated power station. The method is characterized in that the interaction power between an integrated power station and a power grid is optimized through a particle algorithm, so that the difference between peak and valley for the power grid load can be greatly reduced; and the capability that the integrated power station participates in the power grid auxiliary service has positive correlation with the capacity of a power station energy storage system, that is, the greater the capacity becomes, the greater the capability that the integrated power station participates in the power grid auxiliary service becomes, and the more significant the effect of peak clipping and valley filling becomes. The method for optimizing charge and discharge power of an electric car charge-storage-discharge integrated power station can also further reduce the cell loss cost for the charge-storage-discharge integrated power station.

Description

technical field [0001] The invention relates to the technical field of interaction between an electric vehicle and a power grid, in particular to a method for optimizing the interactive power of an integrated power station and a power grid. Background technique [0002] Electric vehicles are a research hotspot in the automobile industry, and have become the focus of attention of governments, energy manufacturers and automobile manufacturers, such as the EV Project plan in the United States and the "Ten Cities, Thousand Vehicles" plan in China. It can be expected that with the continuous improvement of battery technology and the gradual depletion of oil resources in the future, electric vehicles will gradually become popular. With the large-scale popularization of electric vehicles in the future and large-scale access to the grid for charging, due to the randomness and dispersion of charging loads, it will inevitably have a non-negligible impact on grid power generation, tran...

AI Technical Summary

Problems solved by technology

However, in the relevant research on integrated charging, storage and discharging power stations, the relevant optimization methods often only consider the evaluation of the power station's ability to provide auxiliary services such as peak regulation and frequency modulation for the power grid, ignoring the impact of frequent charging and discharging of batteries on battery life

In fact, due to the high price of batteries at present, the cost of batteries accounts for a large proportion of the cost of power stations. Frequent charging and discharging will inevitably increase battery loss and shorten battery life, which will affect the economical operation of charging, storage and discharging stations and increase the operating costs of power stations. At the same time affect the effect of grid ancillary services

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