The invention provides a wind power generation prediction method, a device and equipment, belonging to the technical field of power generation prediction. A method for predict wind power generation isprovide in an embodiment of that invention, Installations and equipment, obtaining the meteorological value of the point to be measured at a fixed time, and extracting wind data from the meteorological value of the point to be measured, wind data are then processed, to convert the wind data into a plurality of class data, Then the calculation factors of the point to be measured are obtained, andcombined with the calculation factors, a plurality of class data are processed to determine the corrected wind value, and finally the power generation power of the point to be measured is predicted according to the corrected wind value, so that the output power of the wind farm for a long time can be accurately predicted, and the accuracy of the grid dispatching task assignment can be improved.