Photovoltaic power prediction method, device and equipment and readable storage medium

The invention discloses a photovoltaic power prediction method, apparatus and device, and a readable storage medium. The method comprises the steps of obtaining historical photovoltaic power data, historical meteorological data and predicted meteorological data of a photovoltaic power station; constructing a historical single-layer directed graph according to the historical photovoltaic power data and the historical meteorological data; determining historical associated meteorological nodes corresponding to the historical power nodes from a plurality of historical meteorological nodes according to a mutual information method; performing feature updating on the historical power nodes based on a graph attention mechanism and the historical associated meteorological nodes to obtain a historical feature matrix; the historical feature matrix and the predicted meteorological data are input into a photovoltaic power prediction model corresponding to the historical meteorological data, the predicted power of the phot