US 12,463,459 B2
Methods and systems for enhanced active power control during frequency deviation
Rubin Panni, Aarhus (DK); and Henrik Møller, Egå (DK)
Assigned to VESTAS WIND SYSTEMS A/S, Aarhus (DK)
Appl. No. 18/262,057
Filed by VESTAS WIND SYSTEMS A/S, Aarhus (DK)
PCT Filed Jan. 3, 2022, PCT No. PCT/DK2022/050001
§ 371(c)(1), (2) Date Jul. 19, 2023,
PCT Pub. No. WO2022/156866, PCT Pub. Date Jul. 28, 2022.
Claims priority of application No. PA 2021 70028 (DK), filed on Jan. 21, 2021.
Prior Publication US 2024/0097486 A1, Mar. 21, 2024
Int. Cl. H02J 13/00 (2006.01); H02J 3/00 (2006.01)
CPC H02J 13/00002 (2020.01) [H02J 3/004 (2020.01); H02J 2203/20 (2020.01)] 22 Claims
OG exemplary drawing
 
1. A method for controlling active power output of a renewable energy power plant, comprising one or more renewable energy generators, the method comprising:
while a measured frequency level of a power network to which the power plant is connected is within a frequency deadband:
determining an estimated active power output from the power plant according to a model of the power plant and one or more model inputs; and
determining a measured active power output from the power plant;
the method further comprising:
determining an estimate of available active power for the power plant to supply according to the model of the power plant and one or more model inputs;
determining an estimate correction factor based on a comparison of the estimated active power output with respect to the measured active power output;
correcting the estimate of available active power based on the estimate correction factor to provide a corrected estimate of available active power; and
when the frequency level of the power network is outside the frequency deadband, determining and dispatching active power set points for controlling the one or more renewable generators of the power plant, the set points being determined based on the corrected estimate of available active power and the frequency level.