The invention belongs to the technical field of satellites, and discloses a centralized
photovoltaic power station capacity prediction method and
system based on a
satellite image and topographic data, and the method comprises the steps: carrying out the recognition of a Sentinel
remote sensing image, obtaining a photovoltaic distribution position after photovoltaic automatic recognition according to the spectral characteristics, including the mean value of each spectral band, NDVI, NDWI and other indexes, and carrying out the prediction of the capacity of a
photovoltaic power station. Meanwhile,
elevation data provided by DEM images are integrated to calculate a topographic slope value, then influence factors such as photovoltaic
image area, inclination angle,
direction angle and installation spacing are calculated by using parameters such as
image resolution and geographic
latitude, and finally, parameters such as known photovoltaic scale and photovoltaic materials are combined to obtain a
photovoltaic power generation system. And a prediction model of the capacity of the centralized
photovoltaic power station is constructed with the installation capacity of a small number of known photovoltaic power stations, so that accurate prediction from the
image area of the photovoltaic
power station identified by the
satellite image to the actual installation capacity is realized. The method comprehensively considers the influence of the
direction angle, the inclination angle, the installation spacing and the like of the photovoltaic
power station on the actual installation capacity, is suitable for mountainous and hilly areas with complex terrains, improves the problem of inaccuracy of a method for estimating the capacity based on the projection area, and provides a scientific basis for the capacity evaluation of the photovoltaic
power station.