A method for controlling 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 (P G) 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 (P G), 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 (P G), comprising the steps of - 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 (P G) 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 (n Z) and a target installation power (P Z), and - determining a setpoint blade angle as the target blade angle (α Z) for the target operating point, wherein - in order to change the blade angle to the target blade angle (α Z), 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, wherein - the feedforward control blade angle control gives the feedforward control blade angle or the feedforward control adjustment rate directly to the blade angle control for implementation. - 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 (P G), 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 (P G), - 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 (P G) 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 (n Z) and a target installation power (P Z), and - determining a setpoint blade angle as the target blade angle (α Z) for the target operating point, wherein - in order to change the blade angle to the target blade angle (α Z), 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, wherein - the feedforward control blade angle control gives the feedforward control blade angle or the feedforward control adjustment rate directly to the blade angle control for implementation. - 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 (n Z) and a target installation power (P Z), and - determining a setpoint blade angle as the target blade angle (α Z) for the target operating point, wherein - in order to change the blade angle to the target blade angle (α Z), 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, wherein - the feedforward control blade angle control gives the feedforward control blade angle or the feedforward control adjustment rate directly to the blade angle control for implementation.