Wind generating set blade three-dimensional aerodynamic configuration scanning modeling method and system

The invention discloses a wind generating set blade three-dimensional aerodynamic configuration scanning modeling method and system, and the method comprises the following steps: 1) enabling three blades installed on a wind generating set to be distributed in a Y shape, enabling the three blades to be in a feathering state, and enabling the wind generating set to be kept in a shutdown non-rotation state under the braking effect; 2) selecting and determining a plurality of measuring positions for placing measuring equipment along a circle in the circumferential direction of the wind generating set; (3) measuring the blade at each measuring position through measuring equipment to obtain point cloud data of the blade; 4) fusing the point cloud data obtained at different measurement positions; 6) eliminating the point cloud data of unassociated objects in the fused point cloud data; and 7) fitting the point cloud data obtained in the step 6) into a blade three-dimensional aerodynamic configuration curved surface