Building surface irradiance simulation calculation method and device, storage medium and calculation equipment

The invention discloses a building surface irradiance simulation calculation method and device, a storage medium and calculation equipment, and the method comprises the steps: obtaining a to-be-analyzed surface needing building surface irradiance calculation and an obstacle coordinate based on a to-be-constructed photovoltaic power station, and starting from the starting moment of one year, calculating the to-be-analyzed surface of the building surface irradiance every preset time interval, calculating the irradiance of the to-be-analyzed surface once, and accumulating the irradiance of the to-be-analyzed surface at all moments calculated in one year to obtain the annual total irradiance of the to-be-analyzed surface; wherein the calculation of the irradiance of the to-be-analyzed surface comprises the following steps: calculating a shadow region generated by an obstacle on a space plane where the to-be-analyzed surface is located based on a direct solar radiation vector; and cutting out an intersection of th