Patent ID: 8428784
Filing Date: 2013-04-23
Classification: F03D,F05B,Y02E

Abstract:
1. A method for operation of a wind power plant ( 11 ) with a rotor ( 10 ) and a rotating apparatus ( 20 , 22 , 24 ) connected with the rotor ( 10 ), wherein a rotor speed (n R ) and a rotating apparatus speed (n) are interrelated via a specifiable transmission ratio, comprising steps of: determining the rotating apparatus speed (n), wherein for the determination of the rotating apparatus speed (n) a rotational speed measurement value (rpm correcting the rotational speed measurement value (rpm feeding the determined rotating apparatus speed (rpm wherein a difference or a quotient of the rotational speed measurement value (rpm i ) to a rotational speed measurement value average ( rpm ) is made for the determination of the correction value (rpm i,c ) of the rotational speed measurement value (rpm i ) wherein a rotational speed measurement value average ( rpm ) of the rotational speed measurement value (rpm i ) captured during a revolution is formed for each full revolution of the rotating apparatus ( 20 , 22 , 24 ) wherein a fitting curve ( 46 ), is formed between two consecutive rotational speed measurement value averages ( rpm , rpm ), wherein a difference or a quotient of the rotational speed measurement value (rpm i ) to the fitting curve ( 46 ) is also formed for the determination of the correction value (rpm i,c ) of the rotational speed measurement value (rpm i ), and wherein the formed differences or quotients are filtered for the determination of the rotating apparatus speed (n, rpm i,f ) of the rotating apparatus ( 20 , 22 , 24 ).