Method, device and system for evaluating generating capacity of wind power plant

The invention provides a method, a device and a system for evaluating the generating capacity of a wind power plant. The method comprises the following steps: acquiring a generating capacity evaluation parameter file of a wind power plant, a power curve file of a wind generating set and parameters related to a wind resource loss item and an uncertainty item; calculating an overall loss value and an overall uncertainty value of the wind power plant based on the obtained power generation capacity evaluation parameter file, the power curve file and parameters related to the wind resource loss item and the uncertainty item; establishing a generating capacity probability statistical model of the wind power plant according to the calculated overall loss value and the overall uncertainty value; and calculating the power generation capacity of the wind power plant under the specific override probability by using the established power generation capacity probability statistical model. 本公开提供了一种用于评估风电场发电量的方法、装置及系统。所述方法包