US 12,078,152 B2
Method for operating at least one wind turbine and wind turbine or group of wind turbines
Finn Daugaard Madsen, Billund (DK); Poul Skjaerbaek, Videbaek (DK); Jan Thisted, Tjele (DK); Jens Thomsen, Brande (DK); and Henrik Bach Mortensen, Viborg (DK)
Assigned to Siemens Gamesa Renewable Energy A/S, Brande (DK)
Appl. No. 17/790,780
Filed by Siemens Gamesa Renewable Energy A/S, Brande (DK)
PCT Filed Jan. 11, 2021, PCT No. PCT/EP2021/050401
§ 371(c)(1), (2) Date Jul. 5, 2022,
PCT Pub. No. WO2021/151645, PCT Pub. Date Aug. 5, 2021.
Claims priority of application No. 20154323 (EP), filed on Jan. 29, 2020.
Prior Publication US 2023/0042604 A1, Feb. 9, 2023
Int. Cl. F03D 9/00 (2016.01); F03D 9/19 (2016.01); F03D 9/25 (2016.01); H02J 15/00 (2006.01)
CPC F03D 9/19 (2016.05) [F03D 9/255 (2017.02); F05B 2220/61 (2013.01); F05D 2220/76 (2013.01); H02J 15/008 (2020.01); H02J 2300/28 (2020.01)] 7 Claims
OG exemplary drawing
 
1. A method for operating at least one wind turbine, the wind turbine being electrically coupled to a power-to-gas converter and an electric grid, the method comprising:
determining a power level for power generated by at least one generator of the at least one wind turbine,
feeding a first portion of the power generated by the at least one generator to the electric grid when the determined power level is below a given lower threshold value;
feeding a second portion of the power generated by the at least one generator to the power-to-gas converter when the determined power level reaches or exceeds the given lower threshold value but is below a given upper threshold value; and
feeding a third portion of the power generated by the at least one generator to the electric grid and/or to storage when the determined power level reaches or exceeds the given upper threshold value;
wherein the second portion of the power generated by the at least one generator fed to the power-to-gas converter is kept constant when the determined power level reaches or exceeds the given upper threshold value.