| 摘要 |
The invention relates to a method for operating a wind energy system (11) having a rotor (9) comprising at least one rotor blade (10), wherein at least part of the rotor blade (10) is or has been rotated about a longitudinal axis of the rotor blade (10) by a blade angle (?), wherein the rotation of the at least part of the rotor blade (10) is carried out using a predetermined blade angle variation rate (?), wherein the rotor (9) is operated at variable speed, and wherein the blade angle variation rate (?) is limited by a predeterminable blade angle variation rate threshold value (G, G', G1-G4). The invention further relates to a wind energy system (11) having a rotor (9) comprising at least one rotor blade (10), wherein at least part of the rotor blade (10) can be rotated about a longitudinal axis of the rotor blade (10) by a blade angle (?), wherein a blade angle variation rate can be predetermined, and the blade angle variation rate (?) is limited by a blade angle variation rate threshold value (G, G', G1-G4). The method and the wind energy system are refined in that a variable blade angle variation rate threshold value (G1 G', G1-G4) is provided, which is changed as a function of at least one operating parameter of the wind energy system (11), particularly as a function of the rotor speed (n) and/or at least of one environmental parameter. |
