公开(公告)号：US20210006068A1

公开(公告)日：2021-01-07

申请号：US16956923

申请日：2018-11-20

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Manoj GUPTA ,  Ravi KUMAR ,  Janakiraman SIVASANKARAN ,  Thomas Schmidt GRAU ,  Martin Ansbjerg KJÆR ,  Kouroush NAYEBI ,  John NIELSEN ,  Jesper Sandberg THOMSEN

IPC: H02J3/00 ,  H02J3/38 ,  H02J3/12 ,  H02J3/24

Abstract: A method for operating a renewable energy power plant comprising a plurality of renewable energy generators. The method comprises: identifying a predetermined condition of the renewable energy power plant, of the grid, or of the connection between the renewable energy power plant and the grid, the predetermined condition indicating a weak grid interconnection between the renewable energy power plant and the grid; and controlling each renewable energy generator in an adaptive active power mode in response to recovery of the grid from a voltage deviation. The adaptive active power mode comprises: determining a thermal capacity of a chopper resistor of the renewable energy generator; calculating, based upon the determined thermal capacity, a limit level of rate of change of active power output that may be implemented by the renewable energy generator; and operating the renewable energy generator to output active power at the calculated rate of change limit level.