METHOD FOR OPERATING A WIND TURBINE, CONTROLLER STRUCTURE, WIND TURBINE AND WIND FARM

摘要

The present invention relates to a method (600) for operating a wind turbine (100), the wind turbine (100) having a tower (102) with external tower loads acting thereon, and an aerodynamic rotor (106) having rotor blades (108) the pitch angle of which is adjustable, which rotor generates a rotor thrust, the method (600) comprising the following steps: determining (610) a speed of a tower head (v_TK) of the tower and/or of a nacelle of the wind turbine (100); determining (620) an absolute wind speed (v_w) in the area of the wind turbine (100); determining (630) a pure wind power (P_wind) on the rotor on the basis of the absolute wind speed (v_w); determining (640) an apparent wind power (P_apparent) on the rotor on the basis of the speed of the tower head and/or of the nacelle; determining (650) an aerodynamic tower vibration power (P_AT) on the basis of a difference between the apparent wind power (P_apparent) and the pure wind power (P_wind); and controlling (660) the wind turbine using the aerodynamic tower vibration power (P_AT).