Photovoltaic energy storage control method and system based on mppt controller

Abstract

The present application relates to the technical field of power system control, in particular to a photovoltaic energy storage control method and system based on an MPPT controller, comprising: determining the energy loss of battery energy storage control at the i-th moment according to the fluctuation of battery charge and discharge power at the i-th moment and the change of energy conversion efficiency of battery energy storage control in a preset time period; determining the coupling parameter according to the energy loss of battery energy storage control at the i-th moment and the battery energy storage control deviation coefficient; determining the stable term of battery energy storage control at the i-th moment according to the difference between the energy loss of battery energy storage control at the i-th moment and the average energy loss and the coupling parameter; optimizing the battery energy storage control objective function according to the stable term of battery energy storage control at the i-th moment to obtain the optimized battery energy storage control objective function; the present application can improve the utilization efficiency of photovoltaic power generation.

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