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公开(公告)号：US11056884B2
公开(公告)日：2021-07-06
申请号：US16403814
申请日：2019-05-06
Applicant: General Electric Company
Inventor： Yashomani Yashodhan Kolhatkar , Olive Ray , Kasi Viswanadha Raju Gadiraju , Arvind Kumar Tiwari
IPC: H02J3/18 , F03D7/02 , F03D80/60 , F03D9/25 , H02K7/18 , H02K9/00 , H02M5/458 , H02P9/00 , H02P9/02
Abstract: A wind turbine system is configured to supply real and reactive power to a grid and includes a tower, and a generator within a nacelle configured atop the tower. The generator is connected to a rotor, which is connected to a hub that includes a plurality of turbine blades mounted thereon. A power converter is configured at a location within the tower. A reactive power compensation device is also configured at the location within the tower, the reactive power compensation device operably configured with the power converter so as to provide reactive power in combination with reactive power generated by the power converter.
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公开(公告)号：US09709035B2
公开(公告)日：2017-07-18
申请号：US14844331
申请日：2015-09-03
Applicant: General Electric Company
CPC classification number: F03D7/048 , F03D7/0284 , Y02E10/723
Abstract: A method is provided. The method includes identifying a dispatch interval for dispatching power from a wind farm, determining an observation time interval and a control time interval in the dispatch interval, computing a farm power moving average of the power of the wind farm, computing a grid frequency moving average of a grid frequency, determining a farm power set point based on a predefined wind farm operating model using the farm power moving average and the grid frequency moving average, controlling one or more wind turbines in the wind farm during the control time interval based on the farm power set point to regulate a farm-level dispatch power.
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公开(公告)号：US20160061188A1
公开(公告)日：2016-03-03
申请号：US14844331
申请日：2015-09-03
Applicant: General Electric Company
CPC classification number: F03D7/048 , F03D7/0284 , Y02E10/723
Abstract: A method is provided. The method includes identifying a dispatch interval for dispatching power from a wind farm, determining an observation time interval and a control time interval in the dispatch interval, computing a farm power moving average of the power of the wind farm, computing a grid frequency moving average of a grid frequency, determining a farm power set point based on a predefined wind farm operating model using the farm power moving average and the grid frequency moving average, controlling one or more wind turbines in the wind farm during the control time interval based on the farm power set point to regulate a farm-level dispatch power.
Abstract translation: 提供了一种方法。 该方法包括识别从风力发电场调度功率的调度间隔，确定观测时间间隔和调度间隔中的控制时间间隔，计算风力发电场功率的农场功率移动平均值，计算电网频率移动平均值 基于使用农场动力平均值和电网频率移动平均值的预定义风电场运行模型来确定农场功率设定点，基于控制时间间隔控制风电场中的一个或多个风力涡轮机 农场动力设定点来规范农场一级调度力。
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公开(公告)号：US20210067073A1
公开(公告)日：2021-03-04
申请号：US16552062
申请日：2019-08-27
Applicant: General Electric Company
Inventor： Kasi Viswanadha Raju Gadiraju , Deepak Raj Sagi , Rajni Kant Burra
Abstract: A method for operating a wind turbine power system that supplies real and reactive power to a grid includes operating a generator of the wind turbine power system up to a first speed limit. The method also includes monitoring a wind speed at the wind turbine power system. When the wind speed drops below a predetermined threshold, the method includes reducing the first speed limit of the generator to a reduced speed limit of the generator. Further, the method includes operating the generator at the reduced speed limit for as long as the wind speed remains below the predetermined threshold so as to optimize a tip-speed-ratio of the wind turbine power system during low wind speeds, thereby increasing power production of the wind turbine power system at low wind speeds.
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公开(公告)号：US10790668B1
公开(公告)日：2020-09-29
申请号：US16403870
申请日：2019-05-06
Applicant: General Electric Company
Inventor： Kasi Viswanadha Raju Gadiraju , Olive Ray , Jayanti Navilgone Ganesh , Arvind Kumar Tiwari
IPC: F03D7/00 , H02J3/16 , H02J3/18 , H02P9/00 , H02M5/458 , H02J3/38 , H02P9/10 , F03D7/02 , F03D9/25 , H02J3/24 , H02P101/15
Abstract: A method for operating a wind turbine system, and associated system, provides real and reactive power to a grid. The wind turbine system includes a generator with a power converter and an integrated reactive power compensation device. A total reactive power demand (Qcmd) is made on the wind turbine system at a first grid state, and is allocated to generator reactive power (Qg) and compensation device reactive power (Qmvb). A first reactive power droop scheme is determined that includes a reactive power droop value applied to one or both of the control loops for (Qg) and (Qmvb) at the first grid state. Upon detection of a grid fault, the first reactive power droop scheme is changed to a second reactive power droop scheme by changing the reactive power droop values applied to one or both of the (Qg) and (Qmvb) control loops during recovery from the grid fault.
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Patent Agency Ranking
公开(公告)号：US11196260B2
公开(公告)日：2021-12-07
申请号：US17021355
申请日：2020-09-15
Applicant: General Electric Company
Inventor： Jayanti Navilgone Ganesh , Arvind Kumar Tiwari , Kasi Viswanadha Raju Gadiraju , Igor Berroteran , Robert Gregory Wagoner , Cornelius Edward Holliday, III
Abstract: A method for operating a power generation system that supplies real and reactive power to a grid includes receiving a reactive power demand made on the power generation system at an operating state of the power generation system and a grid state. Further, the method includes decoupling reactive power control and voltage control between a generator and a reactive power compensation device so as to reduce an oscillatory response of a reactive power output from the reactive power compensation device and the generator. Moreover, the method includes operating, via a device controller, the reactive power compensation device in a reactive power control mode to generate at least a portion of the reactive power demand.
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公开(公告)号：US11152787B2
公开(公告)日：2021-10-19
申请号：US16740108
申请日：2020-01-10
Applicant: General Electric Company
Inventor： Arvind Kumar Tiwari , Jayanti Navilgone Ganesh , Kasi Viswanadha Raju Gadiraju , Robert Gregory Wagoner , Harmeet Singh Narang
Abstract: A system of reactive power compensators for a wind farm includes a multi-winding transformer and a plurality of modular reactive power compensators (MVBs). The multi-winding transformer includes a primary winding and a plurality of secondary windings. The primary winding is configured to be coupled to a point of common coupling (POCC) for the wind farm. The plurality of MVBs are each coupled to a corresponding winding of the plurality of secondary windings.
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公开(公告)号：US20210218245A1
公开(公告)日：2021-07-15
申请号：US16740108
申请日：2020-01-10
Applicant: General Electric Company
Inventor： Arvind Kumar Tiwari , Jayanti Navilgone Ganesh , Kasi Viswanadha Raju Gadiraju , Robert Gregory Wagoner , Harmeet Singh Narang
Abstract: A system of reactive power compensators for a wind farm includes a multi-winding transformer and a plurality of modular reactive power compensators (MVBs). The multi-winding transformer includes a primary winding and a plurality of secondary windings. The primary winding is configured to be coupled to a point of common coupling (POCC) for the wind farm. The plurality of MVBs are each coupled to a corresponding winding of the plurality of secondary windings.
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公开(公告)号：US10985611B2
公开(公告)日：2021-04-20
申请号：US16379933
申请日：2019-04-10
Applicant: General Electric Company
Inventor： Deepak Raj Sagi , Kasi Viswanadha Raju Gadiraju , Deepak Aravind , Vaidhya Nath Venkitanarayanan
IPC: H02J13/00 , G05B19/042 , H02J3/38
Abstract: A method for estimating grid strength of a power grid connected to a renewable energy farm having a plurality of renewable energy power systems includes measuring, at least, a voltage, an active power, and a reactive power at a point of interconnection of the renewable energy farm to the power grid. The method also includes determining a sensitivity of the voltage to at least one of the active power or the reactive power at the point of interconnection. Further, the method includes determining the grid strength of the power grid as a function of the sensitivity of the voltage to at least one of the active power or the reactive power at the point of interconnection. In addition, the method includes dynamically determining at least one of an active power command or a reactive power command for the renewable energy farm at the point of interconnection based on the grid strength. Moreover, the method includes distributing at least one of the active power command or the reactive power command to individual controllers of the plurality of renewable energy power systems and a farm-level controller of the renewable energy farm.
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公开(公告)号：US10731628B1
公开(公告)日：2020-08-04
申请号：US16403789
申请日：2019-05-06
Applicant: General Electric Company
Inventor： Kasi Viswanadha Raju Gadiraju , Olive Ray , Yashomani Yashodhan Kolhatkar , Arvind Kumar Tiwari
Abstract: A method is provided for operating a power generation system that supplies real and reactive power to a grid, the power generation system including a generator/power converter, and a reactive power compensation device. A total reactive power demand (Qcmd) made on the power generation system is determined , as well as a maximum reactive power capacity for each of a generator stator-side reactive power (Qs), a generator line-side reactive power (Ql), and reactive power from the reactive power compensation device (Qmvb). Allocation of (Qs), (Ql), and (Qmvb) to supply (Qcmd) is coordinated by prioritizing (Qmvb) as a first source of reactive power, and one or both of (Qs) and (Ql) as a second source of reactive power.
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