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公开(公告)号：US09680307B2
公开(公告)日：2017-06-13
申请号：US13724305
申请日：2012-12-21
Applicant: General Electric Company
Inventor： Miaolei Shao , Jovan Bebic , Owen Jannis Samuel Schelenz , Patrick Hammel Hart
CPC classification number: H02J4/00 , H02J3/16 , H02J3/24 , H02J3/383 , Y02E10/563 , Y02E40/34 , Y10T307/658
Abstract: Systems and methods for regulating the voltage at a point of interconnection of a renewable energy plant, such as a solar plant, with a grid are provided. A voltage signal indicative of the voltage at the point of interconnection can be received and filtered with a high pass filter to generate a filtered error signal. The high pass filter can block components of the voltage signal at a frequency less than a threshold frequency. A reactive power command for the renewable energy plant can be generated based on the filtered error signal. One or more inverters of the renewable energy plant can be controlled to output reactive power based on the reactive power command. A rejection module can be implemented to prevent adverse interaction with other voltage control devices. In addition, a reset module can be implemented to preserve dynamic reactive power range of the inverters.
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公开(公告)号：US20170104334A1
公开(公告)日：2017-04-13
申请号：US14877345
申请日：2015-10-07
Applicant: GENERAL ELECTRIC COMPANY
Inventor： William James Premerlani , Patrick Hammel Hart , Maozhong Gong
Abstract: A solar power conversion system includes a photovoltaic array having photovoltaic modules for generating direct current (DC) power. A power converter is provided in the system for converting the DC power to alternating current (AC) power. A transformer is coupled between the power converter and a power grid for transmitting the AC power to the power grid. The transformer is connected to the power grid at the point of common coupling (PCC) and to the power converter at output terminals. A reactance estimation module is provided in the system for estimating a short circuit reactance at PCC based on a small change in a measured voltage at output terminals with respect to a small change in a measured reactive power at the output terminals. Further, a maximum reactive power estimation module estimates a maximum reactive power based on the estimated reactance, the measured voltage at output terminals, and the measured reactive power at the output terminals. A controller in the system generates switching command signals for the power converter based on the measured voltage at output terminals and the estimated maximum reactive power.
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公开(公告)号：US20170104333A1
公开(公告)日：2017-04-13
申请号：US14877275
申请日：2015-10-07
Applicant: GENERAL ELECTRIC COMPANY
Inventor： William James Premerlani , Patrick Hammel Hart
CPC classification number: H02J3/383 , H02J3/16 , H02J2003/007 , H02M7/44 , Y02E10/563 , Y02E40/34 , Y02E60/76 , Y04S40/22
Abstract: A solar power conversion system includes a photovoltaic array having photovoltaic modules for generating direct current (DC) power. A power converter in the system converts the DC power to alternating current (AC) power. The AC power is transmitted to the power grid via a transformer coupled between the power converter and the power grid. The transformer is connected to the power grid at the point of common coupling (PCC) and to the power converter at output terminals. A voltage estimation module is configured to estimate a voltage at PCC based on a measured voltage magnitude, a measured real power and a measured reactive power at the output terminals, and a reactance of the transformer. A controller is provided in the system for generating switching command signals for the power converter based on the voltage at PCC.
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公开(公告)号：US20230045585A1
公开(公告)日：2023-02-09
申请号：US17393649
申请日：2021-08-04
Applicant: General Electric Company
Inventor： Patrick Hammel Hart , Alfredo Sebastian Achilles , Randal Voges
IPC: H02J13/00 , H02J3/38 , G05B19/042
Abstract: A system and method are provided for controlling a power generating system having at least one power generating subsystem connected to a point of interconnection (POI). A first data signal is obtained corresponding to a feedback signal of an electrical parameter regulated at the POI, the first data signal having a first signal fidelity. A second data signal indicative of the electrical parameter generated at the power generating subsystem is obtained, the second data signal having a second signal fidelity that is higher than the first signal fidelity. A correlation value between the first and second data signals is obtained by filtering a value difference between the first and second data signals. The correlation value is applied to a setpoint value for the electrical parameter regulated at the POI. The modified setpoint value and the second data signal are combined to generate a setpoint command for the power generating subsystem that is used for controlling generation of power at the power generating subsystem to regulate the electrical parameter at the POI.
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公开(公告)号：US20220025865A1
公开(公告)日：2022-01-27
申请号：US16937658
申请日：2020-07-24
Applicant: General Electric Company
Inventor： Patrick Hammel Hart , Charles Joseph Kosuth
IPC: F03D17/00
Abstract: A method for controlling a renewable energy power system having at least one renewable energy asset connected to a power grid during a frequency event includes receiving, via a controller, a frequency signal of the power grid. The method also includes determining a time constant for a frequency filter assembly as a function of two or more parameters of the frequency signal. Further, the method includes filtering the frequency signal via the frequency filter assembly using the determined time constant. Moreover, the method includes determining a power command for the at least one renewable energy asset using the filtered frequency signal. In addition, the method includes controlling the at least one renewable energy asset based on the power command.
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Patent Agency Ranking
公开(公告)号：US10767630B1
公开(公告)日：2020-09-08
申请号：US16423599
申请日：2019-05-28
Applicant: General Electric Company
Inventor： Vaidhya Nath Venkitanarayanan , Patrick Hammel Hart , Alina Fatima Moosvi , Charles Joseph Kosuth , Enno Ubben , Alev Akbulut
Abstract: A method for operating a wind farm connected to a power grid that demands a reactive power requirement that varies with active power includes monitoring a wind speed at each of the plurality of wind turbines in the wind farm. When the wind speed is within a cut-in wind speed range, the method includes determining a reactive power margin of the wind farm based on the reactive power requirement at an active power output corresponding to the wind speed and a reactive power availability of each of the plurality of wind turbines at the wind speed. The method also includes determining a lowest possible cut-in rotor speed for each of the plurality of wind turbines that satisfies the reactive power margin. Further, the method includes commanding each of the plurality of wind turbines to cut-in and begin to produce power at the lowest possible cut-in rotor speed that satisfies the reactive power margin.
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17.发明申请公开(公告)号：US20200150706A1
公开(公告)日：2020-05-14
申请号：US16677781
申请日：2019-11-08
Applicant: General Electric Company
Inventor： Alina Fatima Moosvi , Vaidhya Nath Venkitanarayanan , Irene Michelle Berry , Patrick Hammel Hart , Hullas Sehgal , Fernando Javier D'Amato , Charles Joseph Kosuth , Deepak Raj Sagi , Rajni Kant Burra , Megan Ann DeWitt , Enno Ubben
IPC: G05F1/66 , H02J3/28 , G05B19/042 , G06F1/26
Abstract: A method for controlling an energy generation and storage system using a multi-layer architecture is provided. The method includes determining, by one or more control devices, a power or energy generation for the energy generation and storage system at a first layer of the multi-layer architecture. The method includes determining, by the one or more control devices, a power or energy set point for the system at a second layer of the multi-layer architecture. The method includes controlling, by the one or more control devices, the energy generation and storage system based, at least in part, on the power or energy setpoint.
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公开(公告)号：US10097009B2
公开(公告)日：2018-10-09
申请号：US14983004
申请日：2015-12-29
Applicant: General Electric Company
Inventor： Patrick Hammel Hart , Ralph Teichmann , John Guido Piccirillo , Honggang Wang , Rebecca Dinan Zoracki
Abstract: A power system includes a first power asset include a first power source and a first power controller. The first power controller includes a first filter configured to receive an error amount at a first frequency range and a second power controller includes a second filter configured to receive the error amount at a second frequency range. The first power controller is configured to instruct the first power source to produce a first amount of power, adjust the first amount of power based on the error amount received by the first filter until the error amount received is substantially zero. When the error amount received is substantially zero, the first power controller is configured to determine a first desired operating amount of power based on the first power source, and adjust the first amount of power based on the first desired operating amount of power.
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公开(公告)号：US20180219373A1
公开(公告)日：2018-08-02
申请号：US15419776
申请日：2017-01-30
Applicant: General Electric Company
Inventor： Patrick Hammel Hart , Darren Hickey , Honggang Wang
IPC: H02J1/14
CPC classification number: H02J1/14 , H02J7/0063 , H02J2001/004
Abstract: An auxiliary power circuit includes an impedance circuit, a switch, and a controller. The switch is coupled in series with the impedance circuit. The switch is configured to selectively couple the impedance circuit to a power source. The controller is coupled to the switch. The controller is configured to close the switch when an output voltage of the power source exceeds a voltage threshold.
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公开(公告)号：US20140175887A1
公开(公告)日：2014-06-26
申请号：US13724305
申请日：2012-12-21
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Miaolei Shao , Jovan Bebic , Owen Jannis Samuel Schelenz , Patrick Hammel Hart
IPC: H02J4/00
CPC classification number: H02J4/00 , H02J3/16 , H02J3/24 , H02J3/383 , Y02E10/563 , Y02E40/34 , Y10T307/658
Abstract: Systems and methods for regulating the voltage at a point of interconnection of a renewable energy plant, such as a solar plant, with a grid are provided. A voltage signal indicative of the voltage at the point of interconnection can be received and filtered with a high pass filter to generate a filtered error signal. The high pass filter can block components of the voltage signal at a frequency less than a threshold frequency. A reactive power command for the renewable energy plant can be generated based on the filtered error signal. One or more inverters of the renewable energy plant can be controlled to output reactive power based on the reactive power command. A rejection module can be implemented to prevent adverse interaction with other voltage control devices. In addition, a reset module can be implemented to preserve dynamic reactive power range of the inverters.
Abstract translation: 提供了用于调节可再生能源工厂（例如太阳能发电厂）与电网的互连点处的电压的系统和方法。 可以接收表示互连点处的电压的电压信号并用高通滤波器进行滤波，以产生滤波后的误差信号。 高通滤波器可以以小于阈值频率的频率阻挡电压信号的分量。 可以基于经滤波的误差信号产生可再生能源装置的无功功率指令。 可以控制可再生能源工厂的一个或多个逆变器，以基于无功功率命令输出无功功率。 可以实施拒绝模块以防止与其他电压控制设备的不利相互作用。 此外，可以实现复位模块以保持逆变器的动态无功功率范围。
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