Control method for grid-connected operation of light, storage and charging integrated system and power grid

Abstract

The invention relates to a control method for grid-connected operation of a light storage and charging integrated system and a power grid, and belongs to the technical field of more than two power generation parallel feed devices. The method comprises the following steps: firstly, constructing a multi-objective optimization scheduling model of a micro-grid formed by photovoltaic power generation and electric vehicle charging, specifically, equally dividing the micro-grid into three time periods according to peak and valley to establish two objective functions associated with the peak, valley and flat time periods, then formulating operation rules of the three time periods of electricity price, and finally, calculating the power price of the micro-grid according to the operation rules of the three time periods. A non-dominated sorting genetic algorithm based on normal distribution crossing is adopted to calculate an objective function value in a period, and finally the size of a transfer load, electricity purchase of a photovoltaic charging station and output of a storage battery are obtained according to the obtained optimal solution of the objective function value. And taking the obtained transfer load size, the electricity purchase of the photovoltaic charging station and the output of the storage battery as a control plan for the grid-connected operation of the light storage and charging integrated system and the power grid, and executing the control plan. According to the method, the load demand of the user is guaranteed, the consumption of new energy is promoted, and the load curve is more stable.

Description

technical field [0001] The invention relates to an operation control method for forming a light-storage-charge integrated system with electric vehicle charging piles when photovoltaic power generation and self-storage energy are combined with the power grid at the same time, especially relates to the integration of light-storage and charge under the time-of-use electricity price The invention relates to a multi-objective optimization operation control method for a system, which belongs to the technical field. Background technique [0002] While electric vehicles are growing rapidly as a "green" means of transportation, photovoltaic power generation has also become the focus of new energy development due to its advantages of safety and cleanliness. With the rapid development of photovoltaic energy storage technology and charging technology, integrated photovoltaic power generation and energy storage systems and electric vehicle charging piles have emerged as the times require...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to improve the control method of the existing integrated system of photovoltaic storage and charging and the traditional grid-connected operation of the large power grid, so as to improve the integration stability and economical efficiency of the integrated system of photovoltaic storage and charging and the grid-connected operation of the grid

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