Abstract: Wind turbine with at least one rotor blade and at least one optical pressure sensor arranged on the rotor blade, and method for operating the wind turbine.

Abstract: A method for monitoring a wind power installation having a nacelle is provided. The method includes recording a sound using at least one acoustic sensor arranged outside and on the nacelle and evaluating the recorded sound to detect an operating state of the wind power installation.

Abstract: The invention relates to a method for capturing a blade angle of a rotor blade of a rotor of a wind turbine, comprising the steps disposing and aligning a contactless measuring device in front of the wind turbine, aligning the wind turbine in its azimuth position in relation to the measuring device, rotating the rotor of the wind turbine, sampling and capturing the profile of the rotor blade, or a part thereof, at a predefined height, by means of the contactless measuring device, and determining the blade angle of the rotor blade from the data recorded during the sampling of the profile.

Abstract: Wind turbine with at least one rotor blade and at least one optical pressure sensor arranged on the rotor blade, and method for operating the wind turbine.

Abstract: A wind turbine rotor blade with a heating unit for heating the rotor blade is provided. The heating unit has at least one optical waveguide as a heating element. The heating unit has at least one connection for an energy source or an emitter, which can emit energy in the form of electromagnetic waves through the optical waveguide. The light is converted into heat by the attenuation losses of the optical waveguide.

Abstract: The present invention relates to a method for operating a wind turbine having a rotor with rotor blades and an essentially horizontal rotation axis for generating electrical energy from wind energy. According to the invention, it is proposed for the wind turbine to be aligned such that the azimuth position of the wind turbine departs by an azimuth adjustment angle from an alignment into the wind, and/or that the blade angle of the rotor blades is adjusted in cyclic rotation such as to reduce alternating loads that are caused by a height profile of the wind.

Abstract: The invention relates to a method for capturing a blade angle of a rotor blade of a rotor of a wind turbine, comprising the steps disposing and aligning a contactless measuring device in front of the wind turbine, aligning the wind turbine in its azimuth position in relation to the measuring device, rotating the rotor of the wind turbine, sampling and capturing the profile of the rotor blade, or a part thereof, at a predefined height, by means of the contactless measuring device, and determining the blade angle of the rotor blade from the data recorded during the sampling of the profile.