Patent ID: 11936188
Assignee: VESTAS WIND SYSTEMS A/S
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 12:
13. A method for controlling a hybrid power plant, the hybrid power plant being connected to an electrical grid for producing power to said electrical grid, the hybrid power plant comprising a plurality of energy assets, the plurality of energy assets comprising:
a first renewable power generating unit, said first renewable power generating unit comprises a plurality of wind turbine generators,
a second renewable power generating unit, wherein the second renewable power generating unit being different from first renewable power generating unit, and
an energy storage unit, said energy storage unit being capable of storing energy from said first and second renewable power generating units, and delivering power to said electrical grid when required,
wherein the method comprises:
controlling a power plant controller to communicate with the plurality of energy assets, the power plant controller being arranged for receiving an active power reference,
performing a first comparison of said active power reference with an available power from said first renewable power generating unit and said second renewable power generating unit, wherein the available power is defined by power which a given renewable power generating unit is able to produce,
performing a second comparison of an available charging, or discharging, capability of the energy storage unit with a result of said first comparison, and distributing a corresponding set point to said energy storage unit, and
distributing set points to said first renewable power generating unit and said second renewable power generating unit, respectively, in response to the result of said first comparison, so as to deliver power from the hybrid power plant in accordance with the received active power reference, and
wherein performing said first comparison of said active power reference with the available power results in said active power reference being smaller than the available power indicating an excess of power available for charging said energy storage unit, and in response to a charging request, the corresponding set point distributed to said energy storage unit is set so that power delivered to the energy storage unit exceeds the excess of power.