Photovoltaic charging station charging control method and device based on weather forecast

Abstract

The present application discloses a charging control method and device for a photovoltaic charging station based on weather forecasting. The method includes: obtaining a weather forecast data set; and adjusting the maximum energy storage discharge of the energy storage battery in the photovoltaic charging station on that day Power to determine the maximum discharge power of the initial energy storage; divide the maximum discharge power of the initial energy storage according to the preset step size to obtain multiple discharge powers; predict the load curve of the distribution network on the day according to the historical data of the distribution network, And in each preset time period of the day, according to the load curve, the vehicle charging demand data in the station and the photovoltaic power generation data of the photovoltaic charging station, after obtaining the electricity purchase fee of each grid when purchasing electricity from the distribution network under each discharge power, it will compare with the minimum The discharge power corresponding to the power purchase fee of the power grid is taken as the maximum discharge power of the energy storage on the day; according to the maximum discharge power of the energy storage on the day and the current time period, based on the time-segmented charging strategy, the vehicles in the station are charged in an orderly manner.

Description

technical field [0001] The present application relates to the technical field of electric power control, in particular to a method and device for controlling charging of a photovoltaic charging station based on weather forecast. Background technique [0002] A photovoltaic charging station is a charging station that converts light energy into electrical energy for storage and is used to charge new energy vehicles. On the one hand, it can realize the local consumption and utilization of renewable energy, effectively improve the utilization rate of renewable energy, and reduce carbon emissions. On the other hand, it can reduce the burden brought by the development of electric vehicles on power grid construction and energy structure adjustment. [0003] The existing photovoltaic charging station charging control method adopts the method of dividing a day according to the photovoltaic conditions and load distribution characteristics, and classifies the vehicles according to the ...

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Problems solved by technology

However, when using the existing technology to control the charging of photovoltaic charging stations, it is found that because the distribution network load curve prediction based on the grid load prediction is not considered, the discharge power cannot be adjusted according to the grid situation, resulting in the possibility that the power grid needs to provide excessive power. If there is too much power, the power consumption of the power grid will be too high, which will waste power resources, and the change of weather will affect the energy storage of photovoltaic charging stations, so the current charging strategy will not work well due to energy storage. Execution, thereby affecting the charging effect of the vehicle

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