US 12,451,695 B2
Methods and systems for improving control of a renewable energy power plant
Joachim Steinkohl, Aarhus C (DK); and Henrik Møller, Egå (DK)
Assigned to VESTAS WIND SYSTEMS A/S, Aarhus N (DK)
Filed by VESTAS WIND SYSTEMS A/S, Aarhus N (DK)
Filed on Aug. 16, 2024, as Appl. No. 18/807,541.
Claims priority of application No. PA202430063 (DK), filed on Feb. 7, 2024.
Prior Publication US 2025/0253660 A1, Aug. 7, 2025
Int. Cl. H02J 3/18 (2006.01); H02J 3/38 (2006.01)
CPC H02J 3/1892 (2013.01) [H02J 3/381 (2013.01); H02J 2300/28 (2020.01)] 14 Claims
OG exemplary drawing
 
1. A power plant controller for a renewable energy power plant comprising a plurality of renewable energy generators, the renewable energy power plant being connected to a power network, the power plant controller being configured to execute machine readable instructions to:
receive a signal indicative of a voltage level of the power network to which the power plant is connected;
receive a plurality of signals from the plurality of renewable energy generators, each signal being indicative of a voltage level of a respective renewable energy generator; and
determine, for each of the plurality of renewable energy generators, a respective reactive power set point by:
determining a reactive power reference value for that renewable energy generator based on an indicated voltage level of the power network;
determining a reactive power adjustment value for that renewable energy generator based on a difference between an indicated voltage level of that renewable energy generator and a reference voltage level determined based on indicated voltage levels of the plurality of renewable energy generators;
determining the reactive power set point for that renewable energy generator based on the reactive power reference value and the reactive power adjustment value, determined for that renewable energy generator; and
dispatch each determined reactive power set point to a respective local controller associated with the respective renewable energy generator for controlling that renewable energy generator.