US 12,483,031 B2
Methods and systems for controlling a power plant during network frequency fluctuations
Mu Wei, Solbjerg (DK); Brian W. Andersen, Ringkøbing (DK); Kouroush Nayebi, Ikast (DK); Kennet Kirk Jensen, Holstebro (DK); Lennart Beland, Silkeborg (DK); Leif Svinth Christensen, Thorsø (DK); Mads Rajczyk Skjelmose, Risskov (DK); and Andreas Svendstrup-Bjerre, Aarhus (DK)
Assigned to VESTAS WIND SYSTEMS A/S, Aarhus N (DK)
Appl. No. 18/858,503
Filed by VESTAS WIND SYSTEMS A/S, Aarhus (DK)
PCT Filed Apr. 3, 2023, PCT No. PCT/DK2023/050091
§ 371(c)(1), (2) Date Oct. 21, 2024,
PCT Pub. No. WO2023/202753, PCT Pub. Date Oct. 26, 2023.
Claims priority of application No. PA202270204 (DK), filed on Apr. 20, 2022.
Prior Publication US 2025/0279650 A1, Sep. 4, 2025
Int. Cl. H02J 3/24 (2006.01); H02J 3/38 (2006.01)
CPC H02J 3/241 (2020.01) [H02J 3/381 (2013.01); H02J 2300/28 (2020.01)] 20 Claims
OG exemplary drawing
 
1. A method for controlling a power plant that comprises at least one power generator, the power plant having a variable available power output at least partly due to variability of an energy source powering the at least one power generator, the method comprising:
receiving a measured frequency of a power network to which the power plant is connected;
determining whether the measured frequency falls within a first frequency sub-band, the first frequency sub-band overlapping a network-defined frequency deadband; and
responsive to the measured frequency falling within the first frequency sub-band, and based at least in part on the measured frequency, outputting a first control signal indicative of either:
a first power offset, for application to a baseline frequency curve for the power plant to generate a set point for controlling a power characteristic of the power plant; or
a set point for controlling a power characteristic of the power plant, the set point being based on a first power offset applied to a baseline frequency curve for the power plant.