Importance

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Abstract

A method for control of a wind power installation which is connected to an electrical supply network and which has a rotor with rotor blades which are adjustable in terms of their blade angle, is able to be operated at a variable speed and is prepared for generating an installation power from wind, wherein a blade angle control is provided for adjusting the blade angles, a closed-loop speed control is provided for closed-loop control of the speed, a closed-loop power control is provided for limiting the installation power, and the wind power installation is able to be operated at an operating point which can be specified, wherein the operating point is characterized at least by the speed and the installation power comprises operating the wind power installation at a first operating point with a first blade angle, checking for a curtailment request, where a reduction in the speed and/or installation power is requested, and if there is a curtailment request, determining a new operating point as the target operating point depending on the curtailment request, wherein the target operating point is characterized by a target speed and a target installation power, and determining a setpoint blade angle as the target blade angle for the target operating point, wherein in order to change the blade angle to the target blade angle, a feedforward control blade angle, or a feedforward adjustment rate describing an adjustment rate of the blade angle, is specified via a feedforward control blade angle control process, wherein the feedforward control blade angle control process gives the feedforward control blade angle or the feedforward control adjustment rate directly to the blade angle control for implementation.

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First Claim