US 11,955,800 B2
Method and control systems for voltage control in renewable energy power plant
Torsten Lund, Fredericia (DK); Germán Claudio Tarnowski, Aarhus N (DK); John Godsk Nielsen, Hornslet (DK); and Per Hagen Nielsen, Tilst (DK)
Assigned to VESTAS WIND SYSTEMS A/S, Aarhus N (DK)
Appl. No. 17/923,856
Filed by VESTAS WIND SYSTEMS A/S, Aarhus N. (DK)
PCT Filed May 6, 2021, PCT No. PCT/DK2021/050144
§ 371(c)(1), (2) Date Nov. 7, 2022,
PCT Pub. No. WO2021/223829, PCT Pub. Date Nov. 11, 2021.
Claims priority of application No. PA 2020 70292 (DK), filed on May 6, 2020.
Prior Publication US 2023/0178988 A1, Jun. 8, 2023
Int. Cl. H02J 3/18 (2006.01); H02J 3/24 (2006.01); H02J 3/38 (2006.01)
CPC H02J 3/18 (2013.01) [H02J 3/24 (2013.01); H02J 3/381 (2013.01); H02J 2300/28 (2020.01)] 19 Claims
OG exemplary drawing
 
1. A method of voltage control for at least one wind turbine generator configured to absorb and supply reactive power on demand, the method comprising:
receiving a dispatch signal from a power plant controller indicating a reactive power set point;
determining a terminal voltage level of the at least one wind turbine generator;
generating a reactive power correction value based on a deviation of the terminal voltage level from a voltage set point;
adjusting the reactive power set point by the reactive power correction value; and
controlling the at least one wind turbine generator according to the adjusted reactive power set point.