公开(公告)号：US20240247639A1

公开(公告)日：2024-07-25

申请号：US18566574

申请日：2022-06-01

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Lennart PETERSEN ,  Germán Claudio TARNOWSKI ,  Mark FABER ,  Poul Brandt CHRISTENSEN

IPC: F03D7/02 ,  F03D7/04 ,  H02J3/24 ,  H02K7/18

CPC classification number: F03D7/0284 ,  F03D7/048 ,  H02J3/24 ,  H02K7/183 ,  F05B2220/706 ,  F05B2270/337

Abstract: A method is provided for controlling power oscillations at a point of common coupling in a wind park. Individual power reference offsets defining an adjustment to a wind turbine power reference signal for counteracting mechanical oscillations in the respective wind turbines are received from respective wind turbine controllers. Based on an aggregated power reference offset, a total power oscillation compensation signal is determined. Individual power oscillation compensation signals for adjusting the wind turbine power reference signal of respective wind turbines are determined based on the individual power reference offsets and the total power oscillation compensation signal. These individual power oscillation compensation signals are then sent to the respective wind turbines.

公开(公告)号：US20210242686A1

公开(公告)日：2021-08-05

申请号：US17052710

申请日：2018-05-03

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Lennart PETERSEN

IPC: H02J3/38 ,  H02J3/32

Abstract: The present invention relates to a hybrid power plant comprising a plurality of power units being operatively connected to an internal power grid, wherein the power ratings of the plurality of power units of the hybrid power plant are determined in accordance with active and reactive power losses in the internal power grid in order to obtain optimal and cost efficient operation of the hybrid power plant. The present invention also relates to a method for determining the power ratings of a plurality of power units being operatively connected to an internal power grid of such a hybrid power plant.

公开(公告)号：US20230344231A1

公开(公告)日：2023-10-26

申请号：US18305055

申请日：2023-04-21

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Per Hagen NIELSEN ,  Lennart PETERSEN ,  Germán Claudio TARNOWSKI

IPC: H02J3/24 ,  G01R19/04 ,  G01R19/10

CPC classification number: H02J3/241 ,  G01R19/04 ,  G01R19/10

Abstract: A method for detecting power oscillation in an electric power grid, wherein the method comprises: integrating a filtered signal on a first interval, the filtered signal being associated with the electric power grid; based on the integration of the filtered signal on the first interval, determining a positive half-period area of the filtered signal and a negative half-period area of the filtered signal, one of the positive half-period area and negative half-period area being immediately subsequent to the other one; and determining that a power oscillation in the electric power grid is detected if the following two conditions are met:



a sum of the positive half-period area of the filtered signal and the negative half-period area of the filtered signal is below a first threshold; and
the absolute value of one of the positive half-period area and negative half-period area is above a second threshold.