Micro-grid electric vehicle charging and discharging control system capable of automatically distributing electric quantity

Abstract

The invention relates to a micro-grid electric vehicle charging and discharging control system capable of automatically distributing electric quantity. The micro-grid electric vehicle charging and discharging control system comprises a vehicle-mounted intelligent terminal, a micro-grid control center, an electric assistance vehicle and a bidirectional charging and discharging device, wherein the vehicle-mounted intelligent terminal is installed in an electric vehicle and is used for collecting next-day electric quantity demand information, receiving electricity price information broadcasted bythe micro-grid control center and generating an electric vehicle charging and discharging strategy based on the electricity price information; the micro-grid control center receives the next-day electric quantity demand information of each electric vehicle, and generates electricity price information and an energy scheduling control instruction of the electric assistance vehicle on the basis of the predicted micro-grid power generation information and the next-day electric quantity demand information; the electric assistance vehicle performs charging and discharging scheduling based on the energy scheduling control instruction; and the bidirectional charging and discharging device is arranged between the electric vehicle and the micro-grid and between the electric vehicle and the micro-grid to realize charging and discharging of the electric vehicle and the electric assistance vehicle. Compared with the prior art, the system has the advantages of improving the safe and reliable operation performance of the micro-grid and the like.

Description

technical field [0001] The invention belongs to the technical field of charge and discharge control of electric vehicles, in particular to a charge and discharge control system for electric vehicles with micro-grid self-distribution of electric power. Background technique [0002] One of the important features of smart grid user-side management is to guide power consumption through electricity prices, provide end users with lower-priced power resources, and provide more flexible energy management methods for power system scheduling of large power grids. A large number of electric vehicles are an important part of the load of the microgrid. On the one hand, the disorderly connection of a large number of electric vehicles will bring certain uncertainties, especially when the grid load peaks, if the charging load of electric vehicles is added, there will be It may cause the load peak to increase, affecting the safe and stable operation of the microgrid. On the other hand, the b...

AI Technical Summary

Problems solved by technology

However, this technology does not fully consider the use of new energy sources in the micro-grid, and does not take advantage of the energy storage characteristics of electric vehicle batteries, which requires additional energy storage device construction costs, high cost, and is not conducive to the safe and reliable operation of the micro-grid.

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