Photovoltaic power generation energy storage control method and system

The invention provides a photovoltaic power generation and energy storage control method and system, and relates to the technical field of photovoltaic energy storage, and the method comprises the steps: obtaining the photovoltaic power generation power, the power supply power of a power grid, the power utilization power of a load, and the electric quantity data and power proportion of energy storage equipment at a plurality of moments in a current detection period; determining an energy storage loss function according to the photovoltaic power generation power, the electric quantity data of the energy storage equipment and the power proportion; determining a grid-connected loss function according to the photovoltaic power generation power, the power grid power supply power, the load power utilization power and the power proportion; and obtaining the predicted photovoltaic power generation power, the predicted load electric power and the expected electric quantity data of the next detection period, and furthe