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公开(公告)号：US10536003B1
公开(公告)日：2020-01-14
申请号：US16261870
申请日：2019-01-30
申请人： Lingling Fan , Zhixin Miao
发明人： Lingling Fan , Zhixin Miao
摘要： Devices and methods for mechanism-based feedback controller employed in a wind powered power system are provided. A controller can include a vector control-based voltage source converter with feedback control circuitry. The feedback control circuitry is configured to modulate either a power order or a dc-link voltage order to control coupling between voltage and power. The controller can be connected to a wind-based turbine generator of a wind farm and regulate power deployed to a power grid.
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公开(公告)号：US10884060B1
公开(公告)日：2021-01-05
申请号：US16227730
申请日：2018-12-20
申请人： Zhixin Miao , Lingling Fan
发明人： Zhixin Miao , Lingling Fan
IPC分类号： G01R31/34
摘要： Various examples are provided extended Kalman filtering estimators for generators. In one example, among others an extended Kalman filtering estimator includes a dynamics estimator configured to calculate an estimated variable such as an estimated dynamic state or an estimated parameter of a generator, a geometry estimator configured to estimate generator values, and a Kalman filter component configured to determine a correction to the estimated state variable.
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公开(公告)号：US09742411B1
公开(公告)日：2017-08-22
申请号：US14873501
申请日：2015-10-02
申请人： Lingling Fan , Zhixin Miao
发明人： Lingling Fan , Zhixin Miao
摘要： Various examples are provided for feedback control of power systems. The feedback control can provide simultaneous frequency regulation and economic operation of a power system. In one example, a method includes obtaining a frequency difference associated with a generator of a power system; determining an output power adjustment based at least in part upon the frequency difference and a cost function associated with the generator; and providing a power command to a secondary frequency control of the generator, the power command based upon the output power adjustment. In another example, a generator control system includes a primary frequency controller configured to control frequency droop of a generator of a power system; and a secondary frequency controller configured to adjust output power of the generator based at least in part upon a frequency difference associated with the generator and a cost function associated with the generator.
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公开(公告)号：US20200028366A1
公开(公告)日：2020-01-23
申请号：US16261870
申请日：2019-01-30
申请人： LINGLING FAN , ZHIXIN MIAO
发明人： LINGLING FAN , ZHIXIN MIAO
摘要： Devices and methods for mechanism-based feedback controller employed in a wind powered power system are provided. A controller can include a vector control-based voltage source converter with feedback control circuitry. The feedback control circuitry is configured to modulate either a power order or a dc-link voltage order to control coupling between voltage and power. The controller can be connected to a wind-based turbine generator of a wind farm and regulate power deployed to a power grid.
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公开(公告)号：US10437214B1
公开(公告)日：2019-10-08
申请号：US15369146
申请日：2016-12-05
申请人： Lingling Fan , Zhixin Miao
发明人： Lingling Fan , Zhixin Miao
IPC分类号： G05B19/042
摘要： Disclosed are various embodiments that relate to multi-agent decision system based at least in part on a dual's dual problem formulation. The embodiments limited the amount of information exchanged among autonomous entities. The embodiments can incorporate existing AC optimal power flow (OPF) software systems. In one embodiments, a subgradient-based iterative method is used.
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公开(公告)号：US10234508B1
公开(公告)日：2019-03-19
申请号：US13968693
申请日：2013-08-16
申请人： Zhixin Miao , Lingling Fan
发明人： Zhixin Miao , Lingling Fan
摘要： Various examples are provided for parameter estimation of generators. In one example, among others, a method includes collecting data corresponding to a generator using a phasor management unit (PMU) and estimating dynamic parameters of the generator using extended Kalman filtering (EKF) and the collected PMU data. In another example, a system includes at least one application executable in a processing device that obtains operational data corresponding to a generator and estimates a dynamic parameter of the generator using EKF and the operational data. In another example, an EKF estimator includes a dynamics estimator configured to estimate a state variable of a generator, a geometry estimator configured to estimate phasor values associated with the generator, and a Kalman filter gain configured to determine a correction to the state variable.
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公开(公告)号：US10103666B1
公开(公告)日：2018-10-16
申请号：US15364950
申请日：2016-11-30
IPC分类号： H02P9/42
摘要： Various examples are related to synchronous generator modeling with frequency control, which can be achieved using unscented Kalman filtering. In one example, a method includes obtaining operational parameters associated with a generator of a power system; determining parameters of a synchronous generator model with frequency control based at least in part upon the operational parameters associated with the generator; and providing a command to a frequency control of the generator, the command updating one or more parameters of the frequency control. In another example, a system includes a generator controller for a generator of a power system; and a computing device in communication with the generator controller, where the computing device is configured to determine parameters of the synchronous generator model using operational parameters associated with the generator and provide a command updating one or more parameters of a frequency control of the generator controller.
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