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1. 发明申请

US20160169946A1 Monitoring Voltage Stability of a Transmission Corridor 有权
标题翻译：监测传输走廊的电压稳定性
公开(公告)号：US20160169946A1
公开(公告)日：2016-06-16
申请号：US15050570
申请日：2016-02-23
申请人： Quanta Technology, LLC
发明人： Mevludin Glavic , Vahid Madani , Damir Novosel
IPC分类号： G01R19/25 , H02J3/00
CPC分类号： G01R19/2513 , G01R27/16 , H02J3/00
摘要： A voltage stability monitoring apparatus monitors the voltage stability of a transmission corridor through which power flows between different parts of a power system. The apparatus monitors an equivalent load impedance at an interface between the transmission corridor and a part of the power system designated as generating the power. This equivalent load impedance at the interface comprises a ratio of a voltage phasor at the interface to a current phasor at the interface. The apparatus tracks a Thevenin equivalent voltage and impedance of the designated part by separately updating that voltage and impedance. Notably, the apparatus updates the imaginary part of the Thevenin equivalent voltage to reflect the magnitude of any changes in the voltage phasor that are associated with large variations in the magnitude of the equivalent load impedance at the interface. The apparatus computes an index indicating the voltage stability as a function of this tracked Thevenin equivalent voltage and impedance
摘要翻译：电压稳定性监视装置监视电力系统的不同部分之间电力流动的输电走廊的电压稳定性。该装置监测传输走廊与被指定为产生电力的电力系统的一部分之间的接口处的等效负载阻抗。界面处的等效负载阻抗包括界面处的电压相量与界面处的电流相量的比值。该装置通过单独更新该电压和阻抗来跟踪指定部件的戴维南等效电压和阻抗。值得注意的是，该装置更新了戴维南等效电压的虚部，以反映与界面处的等效负载阻抗的大幅度变化相关联的电压相量的任何变化的幅度。该装置计算指示作为该跟踪的戴维南等效电压和阻抗的函数的电压稳定性的指标

2. 发明申请

US20190245349A1 Predictive Voltage Stability of a Power System Post-Contingency 审中-公开
公开(公告)号：US20190245349A1
公开(公告)日：2019-08-08
申请号：US15891524
申请日：2018-02-08
申请人： Quanta Technology, LLC
发明人： Vahid Madani , Xinyu Tony Jiang , Damir Novosel , Bozidar Avramovic
IPC分类号： H02J3/24 , G06F17/50 , G01R19/25
CPC分类号： H02J3/24 , G01R19/2513 , G06F17/5036 , G06F2217/78 , H02J3/12 , H02J13/0006 , H02J2003/001 , H02J2003/007
摘要： A voltage stability prediction system is configured to predict voltage stability of a power system under a contingency. The voltage stability prediction system in this regard may execute model-based contingency analysis using a model of the power system to predict, as of a first time, voltage stability of the power system post-contingency. The voltage stability prediction system also obtains, from phasor measurement units (PMUs) in the power system, synchrophasor measurements that indicate, as of a second time later than the first time, phasors in the power system pre-contingency. Further, based on the model-based contingency analysis and the synchrophasor measurements, the voltage stability prediction system predicts, as of the second time, voltage stability of the power system post-contingency.

3. 发明授权

US11316345B2 Predictive voltage stability of a power system post-contingency 有权
公开(公告)号：US11316345B2
公开(公告)日：2022-04-26
申请号：US15891524
申请日：2018-02-08
申请人： Quanta Technology, LLC
发明人： Vahid Madani , Xinyu Tony Jiang , Damir Novosel , Bozidar Avramovic
IPC分类号： H02J3/24 , G01R19/25 , H02J3/12 , G06F30/367 , H02J3/00 , G06F119/06 , H02J13/00
摘要： A voltage stability prediction system is configured to predict voltage stability of a power system under a contingency. The voltage stability prediction system in this regard may execute model-based contingency analysis using a model of the power system to predict, as of a first time, voltage stability of the power system post-contingency. The voltage stability prediction system also obtains, from phasor measurement units (PMUs) in the power system, synchrophasor measurements that indicate, as of a second time later than the first time, phasors in the power system pre-contingency. Further, based on the model-based contingency analysis and the synchrophasor measurements, the voltage stability prediction system predicts, as of the second time, voltage stability of the power system post-contingency.

4. 发明授权

US09588156B2 Monitoring voltage stability of a transmission corridor 有权
标题翻译：监测输电走廊的电压稳定性
公开(公告)号：US09588156B2
公开(公告)日：2017-03-07
申请号：US15050570
申请日：2016-02-23
申请人： Quanta Technology, LLC
发明人： Mevludin Glavic , Vahid Madani , Damir Novosel
IPC分类号： G01R19/25 , H02J3/00 , G01R27/16
CPC分类号： G01R19/2513 , G01R27/16 , H02J3/00
摘要： A voltage stability monitoring apparatus monitors the voltage stability of a transmission corridor through which power flows between different parts of a power system. The apparatus monitors an equivalent load impedance at an interface between the transmission corridor and a part of the power system designated as generating the power. This equivalent load impedance at the interface comprises a ratio of a voltage phasor at the interface to a current phasor at the interface. The apparatus tracks a Thevenin equivalent voltage and impedance of the designated part by separately updating that voltage and impedance. Notably, the apparatus updates the imaginary part of the Thevenin equivalent voltage to reflect the magnitude of any changes in the voltage phasor that are associated with large variations in the magnitude of the equivalent load impedance at the interface. The apparatus computes an index indicating the voltage stability as a function of this tracked Thevenin equivalent voltage and impedance.
摘要翻译：电压稳定性监视装置监视电力系统的不同部分之间电力流动的输电走廊的电压稳定性。该装置监测传输走廊与被指定为产生电力的电力系统的一部分之间的接口处的等效负载阻抗。界面处的等效负载阻抗包括界面处的电压相量与界面处的电流相量的比值。该装置通过单独更新该电压和阻抗来跟踪指定部件的戴维南等效电压和阻抗。值得注意的是，该装置更新了戴维南等效电压的虚部，以反映与界面处的等效负载阻抗的大幅度变化相关联的电压相量的任何变化的幅度。该装置计算指示作为该跟踪的戴维南等效电压和阻抗的函数的电压稳定性的指标。

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