| 摘要 |
The invention relates to a method for determining a yaw angle error (αg) in a wind powerplant (1) having a rotor which is mounted in a gondola (14) so as to be rotatable about a rotor axis (2) and which has one or more rotor blades (3a, 3b, 3c), wherein the gondola (14) is rotatable about a yaw axis (12). In order to determine the yaw angle error (αg) in a particularly easy way, there is provision according to the invention that the yaw angle error (αg) is determined on the basis of a cyclic power drop (8) of measured power, which is output by the wind powerplant, compared to an expected value, wherein a period length of the cyclic power drop corresponds at maximum to a duration of one complete revolution of the rotor about the rotor axis (2). The invention also relates to an apparatus for carrying out a method of this kind. In addition, the invention relates to a computer program product, designed to carry out such a method, and to a computer-readable data carrier. |
