US 12,009,661 B2
Passive reactive compensation for a wind power plant
Nikolaus Goldenbaum, Ry (DK)
Assigned to Siemens Gamesa Renewable Energy A/S, Brande (DK)
Appl. No. 17/928,804
Filed by Siemens Gamesa Renewable Energy A/S, Brande (DK)
PCT Filed May 18, 2021, PCT No. PCT/EP2021/063175
§ 371(c)(1), (2) Date Nov. 30, 2022,
PCT Pub. No. WO2021/249730, PCT Pub. Date Dec. 16, 2021.
Claims priority of application No. 20178875 (EP), filed on Jun. 9, 2020.
Prior Publication US 2023/0231385 A1, Jul. 20, 2023
Int. Cl. H02J 3/00 (2006.01); H02J 3/18 (2006.01); H02P 9/02 (2006.01)
CPC H02J 3/18 (2013.01) [H02P 9/02 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A method of transmitting reactive power between at least one wind turbine and a power system through a transformer connected between the at least one wind turbine and the power system, the at least one wind turbine including a power converter, the method including:
a first step of ramping a reactive power from a maximum reactive import towards a maximum reactive export up to when a first threshold is reached,
a second step of connecting at least one passive device to the transformer and reducing a reactive powder of the power converter of an amount corresponding to the reactive contribution from the at least one passive device,
a third step of ramping the reactive power towards the maximum reactive export up to when the maximum reactive export is reached.