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公开(公告)号：US12113363B2
公开(公告)日：2024-10-08
申请号：US17417060
申请日：2019-11-28
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Manoj Gupta , Kouroush Nayebi , Janakiraman Sivasankaran
CPC classification number: H02J3/18 , G05B15/02 , H02J3/004 , H02J3/381 , H02J13/00002 , H02J2300/22 , H02J2300/28
Abstract: There is provided a method for operating a renewable energy power plant comprising a plurality of renewable energy generators, the method comprising: calculating a rate of change of reactive power reference level for transitioning between a present reactive power reference level, output by a reactive power controller, and a target reactive power reference level, the target reference level being suitable for normal operation of the renewable energy power plant; and, following a fault on a power network to which the renewable energy power plant is connected, dispatching a control signal for controlling the renewable energy power plant to generate or consume reactive power at the calculated rate of change to transition the reactive power level of the renewable energy power plant to the target reactive power reference level.
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公开(公告)号：US11916392B2
公开(公告)日：2024-02-27
申请号：US17286802
申请日：2019-08-20
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Kouroush Nayebi , Mu Wei , Torsten Lund , Per Lund
CPC classification number: H02J3/381 , G05B15/02 , H02J13/00002 , H02J2300/28
Abstract: Embodiments provide for the control of a power plant including several generators by setting a reference frame for the generators with a first and a second axis; measuring a grid demand voltage at the shared connection point; determining active and reactive currents required at the shared connection point based on the grid demand voltage and grid codes; transforming the active and reactive currents required at the shared connection point to the reference frame where the first axis defines a first current set point and the second axis defines a second current set point; and dispatching the first and second current set points to generator controllers associated with each generator. Current set points may be generated for positive/negative frames, direct quadrature frames, real/imaginary frames and may be set evenly for all generators or adjusted per generator.
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公开(公告)号：US10958071B2
公开(公告)日：2021-03-23
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 Godsk Nielsen , Jesper Sandberg Thomsen
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.
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公开(公告)号：US10731629B2
公开(公告)日：2020-08-04
申请号：US16220830
申请日：2018-12-14
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Jorge Martinez Garcia , Kouroush Nayebi , Rubin Panni
Abstract: The present invention relates a power plant controller (PPC), the power plant controller to control produced power from a wind power plant (WPP), the wind power plant comprises at least a plurality of wind turbine generators, the wind power plant being connected to an electrical grid, wherein the power plant controller, in the event of receiving a signal indicative of a predefined event in the wind power plant, is capable of controlling the wind power plant so that the produced power, from the wind power plant to the electric grid, is a negative amount of active power. The invention also relates to a method for controlling a wind power plant connected to an electrical grid, the wind power plant comprises a plurality of wind turbine generators.
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公开(公告)号：US10724499B2
公开(公告)日：2020-07-28
申请号：US16060104
申请日：2016-12-01
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Kouroush Nayebi , Jacob Deleuran Grunnet , Jesper Sandberg Thomsen
Abstract: There is presented a method for controlling a plurality of wind turbines comprising measuring wind turbine operation parameters in a model relating a plurality of wind turbine parameters to each other, estimating one wind turbine operation parameter value based on the model and the measured remaining wind turbine operation parameter values, providing a reliability parameter value for each wind turbine based on a difference value, said difference value being a difference between the estimated wind turbine operation parameter value, and the measured wind turbine operation parameter value corresponding to the wind turbine operation parameter for which the estimated wind turbine operation parameter value is provided, and controlling the plurality of wind turbines based on the corresponding plurality of reliability parameter values.
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Patent Agency Ranking
6.发明授权公开(公告)号：US10539118B2
公开(公告)日：2020-01-21
申请号：US16312541
申请日：2017-07-05
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Steve Jessen , Søren Kappelgaard , Jacob Barsøe Kjærgaard , Kouroush Nayebi , Mads Rajczyk Skjelmose , Mu Wei
Abstract: A wind power plant has a plurality of wind turbine generators and a power plant controller arranged to communicate with the plurality of wind turbines generators. Each wind turbine generator has a controller arranged to control an active power output in its respective wind turbine generator according to an active power set point received from the wind power plant controller. A change in the active power reference changes the active power set point for each wind turbine generator by a weighting factor.
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7.发明授权公开(公告)号：US12241454B2
公开(公告)日：2025-03-04
申请号：US18263879
申请日：2022-01-20
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Bo Yin , Torsten Lund , Gert Karmisholt Andersen , Kouroush Nayebi , Manoj Gupta
Abstract: The invention relates to wind turbines, particularly to controlling reactive power exchange between a power grid and a wind power plant. The wind power plant has a plurality of wind turbine generators each having a corresponding power converter with a converter controller. Further, the wind power plant has a power plant transformer with an on load tap changer coupled between the wind power plant and the power grid. The power plant controller is regulating the on load tap changer and is generating reactive component setpoints for the wind turbine generators, when determining a need for production of short-term reactive power due to a sudden change in reactive power measured at the point of common coupling.
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公开(公告)号：US12199443B2
公开(公告)日：2025-01-14
申请号：US18718374
申请日：2022-10-31
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Dan Wu , Mads Rajczyk Skjelmose , Kouroush Nayebi
Abstract: The invention relates to a power plant connected to an electrical grid and a method for controlling the power plant. The power plant comprises one or more power generators and at least one synchronous condenser. The power generators may be wind turbine generators, solar photovoltaic elements or other kinds of renewable power generators. During a deviation in frequency on the electrical grid, the synchronous condenser counteracts the frequency deviation, but it may also unintentional supply active power during the frequency event. The control method is controlling the active power supply from the power generators during the frequency events based only on the active power output from the power generators.
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公开(公告)号：US11245261B2
公开(公告)日：2022-02-08
申请号：US16065591
申请日：2016-12-12
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Dumitru-Mihai Valcan , Jorge Martinez Garcia , Kouroush Nayebi , Jesper Sandberg Thomsen , Martin Ansbjerg Kjær
Abstract: A method for controlling a wind power plant comprising a plurality of wind turbine generators, wherein the method comprises: deriving an estimated value for electrical losses in the wind power plant, deriving a measured value for electrical losses in the wind power plant, based on a difference between an aggregated power production from the plurality of wind turbine generators and a power measurement at a point of common coupling; applying the estimated value for electrical losses and the measured value for electrical losses in an active power control loop, comprising a regulator; and controlling by means of the active power control loop an active power production of the wind power plant at the point of common coupling.
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公开(公告)号：US09863401B2
公开(公告)日：2018-01-09
申请号：US14346470
申请日：2012-09-28
Applicant: VESTAS WIND SYSTEMS A/S
Inventor： Sridhar Sahukari , Kouroush Nayebi , Peter Frederick Mayer
CPC classification number: F03D7/04 , F03D7/028 , F03D7/047 , F03D7/048 , F03D9/257 , H02J3/12 , H02J3/386 , H02P9/44 , Y02E10/723 , Y02E10/763
Abstract: The present invention relates to a wind power plant, with at least one wind turbine generator, where each of the at least one wind turbine generator has a first voltage controller with a first bandwidth, arranged for controlling a voltage level, and where the wind power plant has a power plant controller with a second voltage controller with a second bandwidth also arranged for controlling the voltage level, the first bandwidth is larger than the second bandwidth. The invention also relates to a method for controlling the voltage level of a wind power plant, by using multi bandwidth voltage controllers.
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