Abstract: A method for operating a first wind power installation comprising a rotor having a rotor blade that is adjustable with a pitch angle, which generates an electrical power and in the wake of which a second wind power installation is located in at least one wake wind direction, comprising the step of: operating the first wind power installation in a substantially wake-free normal mode with a first pitch characteristic, and operating the first wind power installation in a wake-loaded wake mode with a second pitch characteristic, wherein the first pitch characteristic represents a first profile of the pitch angle and the second pitch characteristic represents a second profile of the pitch angle as a function of the electrical power, wherein the pitch angle of the second pitch characteristic is greater than the pitch angle of the first pitch characteristic for at least one range of the electrical power.

Abstract: Provided is a method for optimizing an operation of a wind farm. The farm includes wind turbines and each can be adjusted via operating settings, and a farm model depicting the wind farm or part thereof is used. The method comprises an optimization sequence using the farm model, with the steps: specifying an optimization wind direction in the farm model for optimizing the operation of the farm for this wind direction; varying operating settings of at least a first leading turbine of the farm model; determining effects of varying the operating settings of the first leading turbine on at least one downstream turbine of the farm model, which is aerodynamically influenced by the first leading turbine, by means of a wake model; determining a total farm result of the farm model; wherein the operating settings are varied so as to optimize the total farm result.

Abstract: A method for designing and operating a wind power plant for generating electrical power from wind, wherein the wind power plant has an aerodynamic rotor with rotor blades of which the blade setting angle can be adjusted, wherein the rotor blades are populated with a plurality of vortex generators between the rotor blade root and the rotor blade tip, characterized in that the population with the vortex generators in the longitudinal direction of the respective rotor blade is carried out up to a radius position which is determined depending on the air density at a site of the wind power plant. A rotor blade of a wind power plant, to an associated wind power plant and to a wind farm.

Abstract: A method for operating a first wind power installation comprising a rotor having a rotor blade that is adjustable with a pitch angle, which generates an electrical power and in the wake of which a second wind power installation is located in at least one wake wind direction, comprising the step of: operating the first wind power installation in a substantially wake-free normal mode with a first pitch characteristic, and operating the first wind power installation in a wake-loaded wake mode with a second pitch characteristic, wherein the first pitch characteristic represents a first profile of the pitch angle and the second pitch characteristic represents a second profile of the pitch angle as a function of the electrical power, wherein the pitch angle of the second pitch characteristic is greater than the pitch angle of the first pitch characteristic for at least one range of the electrical power.

Abstract: A method for operating a wind turbine, in particular at a location characterized by a cold climate is provided. The method includes, specifying an air density at a location of the wind turbine, setting a blade angle of an adjustable rotor blade based on an output power, torque and/or rotor speed. The method includes setting the blade angle as a function of a at pitch characteristic curve which specifies the blade angle as a function of the output power, the torque and/or the rotor speed and as a function of the air density. According to the pitch characteristic curve, the blade angle has a minimum as a function of the air density in a region of a reference density of an atmosphere at the location which is characterized by a cold climate.

Abstract: A method for operating a wind turbine, in particular at a location characterized by a cold climate is provided. The method includes specifying an air density at a location of the wind turbine, setting a blade angle of an adjustable rotor blade based on an output power, torque and/or rotor speed. The method includes setting the blade angle as a function of a pitch characteristic curve which specifies the blade angle as a function of the output power, the torque and/or the rotor speed and as a function of the air density. According to the pitch characteristic curve, the blade angle has a minimum as a function of the air density in a region of a reference density of an atmosphere at the location which is characterized by a cold climate.

Abstract: Provided is a method for optimizing an operation of a wind farm. The farm includes wind turbines and each can be adjusted via operating settings, and a farm model depicting the wind farm or part thereof is used. The method comprises an optimization sequence using the farm model, with the steps: specifying an optimization wind direction in the farm model for optimizing the operation of the farm for this wind direction; varying operating settings of at least a first leading turbine of the farm model; determining effects of varying the operating settings of the first leading turbine on at least one downstream turbine of the farm model, which is aerodynamically influenced by the first leading turbine, by means of a wake model; determining a total farm result of the farm model; wherein the operating settings are varied so as to optimize the total farm result.