US 12,297,812 B2
System and method for reducing farm-level power oscillations in the grid induced by a wind farm
Till Hoffmann, Osnabrueck (DE); Werner Gerhard Barton, Gescher (DE); and Enno Ubben, Steinfurt (DE)
Assigned to General Electric Renovables Espana, S.L., Barcelona (ES)
Appl. No. 18/547,571
Filed by General Electric Renovables Espana, S.L., Barcelona (ES)
PCT Filed Feb. 26, 2021, PCT No. PCT/IB2021/051645
§ 371(c)(1), (2) Date Aug. 23, 2023,
PCT Pub. No. WO2022/180432, PCT Pub. Date Sep. 1, 2022.
Prior Publication US 2024/0301865 A1, Sep. 12, 2024
Int. Cl. F03D 7/04 (2006.01); F03D 7/02 (2006.01)
CPC F03D 7/048 (2013.01) [F03D 7/0284 (2013.01); F05B 2270/32 (2013.01); F05B 2270/335 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for controlling a wind farm having a plurality of wind turbine power systems electrically connected to an electrical grid through a point of interconnection, the method comprising:
(a) determining, via a controller of the wind farm, a phase and an amplitude of individual power oscillations from each of the plurality of wind turbine power systems;
(b) determining, via the controller, a farm-level power oscillation for the wind farm based on the individual power oscillations from each of the plurality of wind turbine power systems; and,
(c) implementing, via the controller, a phase-shifting control scheme using the phases and the amplitudes of the individual power oscillations from each of the plurality of wind turbine power systems so as to maintain the farm-level power oscillation below a predetermined oscillation threshold, the phase-shifting control scheme comprising:
altering operation of a subset of the plurality of wind turbine power systems when the phases of the power oscillations of a certain percentage of the plurality of wind turbine power systems are equal; and
maintaining operation of the plurality of wind turbine power systems as-is when the phases of the power oscillations from each of the plurality of wind turbine power systems varies by a certain amount across the wind farm.