Patent ID: 8143734

Claim:
A method for the operation of a wind power plant ( 10 ) with a rotor ( 12 ), which has at least one angle-adjustable rotor blade ( 14 ), comprising the steps of: determining an operating parameter through a recording process, monitoring the operating parameter, operating the wind power plant ( 10 ) in a first operating mode ( 71 ) and a second operating mode ( 75 ), wherein the first operating mode ( 71 ) is a performance-optimized normal mode ( 71 ) and the second operating mode ( 75 ) is an operating mode outside of a performance-optimized mode ( 71 ) with a reduced rotational speed and/or with a reduced power; and upon reaching an operating parameter threshold value, initiating a braking process of the rotor ( 12 ), wherein in the second operating mode ( 75 ) the operating parameter threshold value and/or the recording process is adjusted in order to determine the operating parameter, or wherein the operating parameter is an acceleration of the rotor and in the first operating mode ( 71 ) and/or second operating mode ( 75 ) a braking process of the rotor ( 12 ) is initiated when a rotor acceleration prevails that is greater than a rotor acceleration threshold value.