US 12,407,167 B2
Renewable energy power plant fast frequency response
Ricardo Manuel Teixeira Gomes, Oporto (PT); and Ines Pereira Barreira, Aarhus C (DK)
Assigned to VESTAS WIND SYSTEMS A/S, Aarhus N (DK)
Appl. No. 18/718,394
Filed by VESTAS WIND SYSTEMS A/S, Aarhus N (DK)
PCT Filed Oct. 31, 2022, PCT No. PCT/DK2022/050227
§ 371(c)(1), (2) Date Jun. 10, 2024,
PCT Pub. No. WO2023/104263, PCT Pub. Date Jun. 15, 2023.
Claims priority of application No. PA202170604 (DK), filed on Dec. 9, 2021.
Prior Publication US 2025/0055280 A1, Feb. 13, 2025
Int. Cl. H02J 3/32 (2006.01); F03D 7/02 (2006.01); F03D 9/11 (2016.01); H02J 3/38 (2006.01); H02J 3/46 (2006.01); H02J 3/48 (2006.01)
CPC H02J 3/32 (2013.01) [F03D 7/0284 (2013.01); F03D 9/11 (2016.05); H02J 3/381 (2013.01); H02J 3/466 (2020.01); H02J 3/48 (2013.01); H02J 2300/24 (2020.01); H02J 2300/28 (2020.01); H02J 2300/40 (2020.01); Y02E 70/30 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method of controlling a renewable energy power plant connected to a power network, the renewable energy power plant comprising one or more renewable energy generators having an active power reserve for supplying additional active power to the power network and an energy storage system having an active power store, the method comprising, in response to detecting a frequency event on the power network:
determining an active power request for the renewable energy power plant based on the frequency event; and
implementing a power sequence to manage the additional active power from the energy storage system and the one or more renewable energy generators to satisfy the active power request, the power sequence comprising:
initiating a first power stage in response to detecting the frequency event, wherein the active power contribution from the energy storage system is controlled during the first power stage by:
determining an initial power shortage between the active power request and the active power output from the one or more renewable energy generators;
determining a first active power set point for the energy storage system based on the initial power shortage,
dispatching the first active power set point to the energy storage system to cause the energy storage system to increase the active power output to the power network from the active power store; and
detecting when the active power output from the energy storage system is equal to the first active power set point; and
initiating a second power stage once the active power output from the energy storage system is equal to the first active power set point, wherein the active power contribution from the energy storage system is controlled during the second power stage by:
determining a subsequent power shortage between the active power request and the active power output from the one or more renewable energy generators; and
determining and dispatching a second active power set point for the energy storage system based on the subsequent power shortage.