US 11,835,033 B2
Method for operating a wind power installation, wind power installation and wind farm
Annika Länger-Möller, Aurich (DE); Andreas von Albedyll, Bremen (DE); and Christoph Scheit, Aurich (DE)
Assigned to Wobben Properties GmbH, Aurich (DE)
Filed by Wobben Properties GmbH, Aurich (DE)
Filed on Nov. 3, 2021, as Appl. No. 17/518,378.
Claims priority of application No. 20205607 (EP), filed on Nov. 4, 2020.
Prior Publication US 2022/0136484 A1, May 5, 2022
Int. Cl. F03D 7/04 (2006.01); F03D 7/02 (2006.01)
CPC F03D 7/048 (2013.01) [F03D 7/0224 (2013.01); F03D 7/0276 (2013.01); F05B 2270/303 (2013.01); F05B 2270/305 (2013.01); F05B 2270/32 (2013.01); F05B 2270/324 (2013.01); F05B 2270/325 (2013.01); F05B 2270/327 (2013.01); F05B 2270/328 (2013.01); F05B 2270/333 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for operating a wind power installation, the method comprising:
determining changes in at least two environmental parameters of an environment of the wind power installation, wherein the at least two environmental parameters are selected from turbulence intensity, air density, air temperature, shear, and precipitation,
providing boundary conditions for operating the wind power installation, the boundary conditions containing at least one boundary condition chosen from a load boundary condition, a noise level boundary condition, and a power boundary condition, and
adapting an operational control and/or an operating characteristic of the wind power installation based on a combination of the changes in the at least two environmental parameters and taking into consideration the boundary conditions,
wherein the determining changes in the at least two environmental parameters comprises determining changes in the turbulence intensity,
wherein in response to a reduction in the turbulence intensity, increasing an angle of attack reserve and a load reserve, and wherein the adapting the operational control and/or an operating characteristic comprises:
a) reducing a tip-speed-ratio and/or a minimum blade angle in an upper partial load range in order to increase the power, and
b) displacing a pitch characteristic in the upper partial load range towards higher powers in order to compensate for the load and angle of attack reserves which have arisen, or
c) in addition to a) and alternatively to b), increasing a rotor rotational speed of the wind power installation taking into consideration the noise level boundary condition.