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1. 发明授权

US10168372B2 System and method for leakage current and fault location detection in electric vehicle DC power circuits 有权
公开(公告)号：US10168372B2
公开(公告)日：2019-01-01
申请号：US15379126
申请日：2016-12-14
申请人： General Electric Company
发明人： William James Premerlani , Ibrahima Ndiaye , Kum-Kang Huh , Ahmed Elasser
IPC分类号： G01R31/00 , B60L11/18 , B60L11/02 , G01R31/02 , G01R31/08 , B60R16/02
摘要： A system and method for leakage current detection and fault location identification in a DC power circuit is disclosed. The system includes a plurality of DC leakage current detectors positioned throughout the DC power circuit, the DC leakage current detectors configured to sense and locate a leakage current fault in the DC power circuit. Each of the DC leakage current detectors is configured to generate a net voltage at an output thereof indicative of whether a leakage current fault is present at a location at which the respective DC leakage current detector is positioned. A logic device in operable communication with the DC leakage current detectors receives output signals from each DC leakage current detector comprising the net voltage output and locates the leakage current fault in the DC power circuit based on the output signals received from the plurality of DC leakage current detectors.

2. 发明授权

US09997921B2 Solar power conversion system and method 有权
公开(公告)号：US09997921B2
公开(公告)日：2018-06-12
申请号：US14877275
申请日：2015-10-07
申请人： GENERAL ELECTRIC COMPANY
发明人： William James Premerlani , Patrick Hammel Hart
IPC分类号： H02J3/38 , H02M7/44 , H02J3/16 , H02J3/00
CPC分类号： H02J3/383 , H02J3/16 , H02J2003/007 , H02M7/44 , Y02E10/563 , Y02E40/34 , Y02E60/76 , Y04S40/22
摘要： 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.

3. 发明申请

US20160105018A1 HYBRID DIRECT-CURRENT CIRCUIT BREAKER 有权
标题翻译：混合直流电路断路器
公开(公告)号：US20160105018A1
公开(公告)日：2016-04-14
申请号：US14510575
申请日：2014-10-09
申请人： General Electric Company
发明人： Ruxi Wang , William James Premerlani , Antonio Caiafa , Yan Pan
IPC分类号： H02H9/02
CPC分类号： H03K17/92 , H01H9/541 , H01H9/542 , H01H2009/543
摘要： A circuit breaking system includes a first branch including at least one solid-state snubber; a second branch coupled in parallel to the first branch and including a superconductor and a cryogenic contactor coupled in series; and a controller operatively coupled to the at least one solid-state snubber and the cryogenic contactor and programmed to, when a fault occurs in the load circuit, activate the at least one solid-state snubber for migrating flow of the electrical current from the second branch to the first branch, and, when the fault is cleared in the load circuit, activate the cryogenic contactor for migrating the flow of the electrical current from the first branch to the second branch.
摘要翻译：断路系统包括包括至少一个固态缓冲器的第一分支; 第二分支并联耦合到第一分支并且包括串联耦合的超导体和低温接触器; 以及控制器，其可操作地耦合到所述至少一个固态缓冲器和所述低温接触器，并且被编程为当所述负载电路中发生故障时，激活所述至少一个固态缓冲器，用于使所述电流从所述第二分支到第一分支，并且当故障在负载电路中被清除时，激活用于将电流从第一分支移动到第二分支的低温接触器。

4. 发明授权

US10700523B2 System and method for distribution load forecasting in a power grid 有权
公开(公告)号：US10700523B2
公开(公告)日：2020-06-30
申请号：US15688370
申请日：2017-08-28
申请人： General Electric Company
发明人： Yan Pan , William James Premerlani
IPC分类号： G06Q50/06 , H02J3/28 , H02J3/00
摘要： A method for short term load forecasting in a power grid includes obtaining historical data comprising power data, load data and weather data corresponding to time index data recorded from a location in a power distribution network of the power grid. The method further includes receiving power grid data comprising a plurality of power values, and a plurality of weather parameter values corresponding to a plurality of recent time instant values. The method also includes generating modified historical data using statistical techniques to rectify error conditions. The method further includes estimating one or more power values at a future time instant based on the modified historical data and the power grid data. The method also includes balancing load of the power distribution network based on the estimated one or more power values.

5. 发明授权

US10203363B2 DC leakage current detector and method of operation thereof for leakage current detection in DC power circuits 有权
公开(公告)号：US10203363B2
公开(公告)日：2019-02-12
申请号：US15379160
申请日：2016-12-14
申请人： General Electric Company
发明人： William James Premerlani , Ibrahima Ndiaye , Kum-Kang Huh , Ahmed Elasser
IPC分类号： G01R31/00 , B60L11/18 , H02M1/32 , G01R31/02 , G01R15/18 , G01R19/00 , G01R31/08
摘要： The DC leakage current detector for detecting leakage current in a DC bus includes a pair of transformers each comprising a magnetic core and excitation and detection windings would about the magnetic core, with the magnetic core positionable about a pair of conductors that create a magnetic field that is a sum of currents in the conductors. An excitation and biasing circuit is connected to the excitation winding in each transformer to inject a current signal thereto that creates a changing magnetic flux in the core of each transformer and a detector output connected to the detection winding in each transformer to receive a voltage therefrom generated responsive to the magnetic flux in the core of each transformer, wherein the voltage on the detection windings provides a net voltage at the detector output whose value is indicative of a presence of a leakage current on the DC bus.

6. 发明申请

US20180062394A1 SYSTEMS AND METHODS FOR OPERATIVELY COUPLING A MICRO-GRID TO A BULK GRID 审中-公开
公开(公告)号：US20180062394A1
公开(公告)日：2018-03-01
申请号：US15243974
申请日：2016-08-23
申请人： General Electric Company
发明人： Santosh Sambamoorthy Veda , William James Premerlani
IPC分类号： H02J3/46 , H02J3/04
摘要： A method for operatively coupling a plurality of generating units in at least one micro-grid to a bulk grid, where the at least one micro-grid is configurable to be operatively coupled to the bulk grid via a point of interconnection breaker is presented. The method includes, using a control unit operatively coupled to the at least one micro-grid and the bulk grid, determining one or more bulk grid side parameters and one or more micro-grid side parameters, comparing one or more of the one or more micro-grid side parameters with corresponding one or more bulk grid side parameters, and synchronizing each of the plurality of generating units in the at least one micro-grid with the bulk grid based on the comparison. Further, the method includes connecting simultaneously, using the point of interconnection breaker, each of the plurality of generating units to the bulk grid based on the synchronization.

7. 发明授权

US09654102B2 Hybrid direct-current circuit breaker 有权
公开(公告)号：US09654102B2
公开(公告)日：2017-05-16
申请号：US14510575
申请日：2014-10-09
申请人： General Electric Company
发明人： Ruxi Wang , William James Premerlani , Antonio Caiafa , Yan Pan
IPC分类号： H02H9/08 , H03K17/92 , H01H9/54
CPC分类号： H03K17/92 , H01H9/541 , H01H9/542 , H01H2009/543
摘要： A circuit breaking system includes a first branch including at least one solid-state snubber; a second branch coupled in parallel to the first branch and including a superconductor and a cryogenic contactor coupled in series; and a controller operatively coupled to the at least one solid-state snubber and the cryogenic contactor and programmed to, when a fault occurs in the load circuit, activate the at least one solid-state snubber for migrating flow of the electrical current from the second branch to the first branch, and, when the fault is cleared in the load circuit, activate the cryogenic contactor for migrating the flow of the electrical current from the first branch to the second branch.

8. 发明申请

US20150051852A1 SYSTEMS AND METHODS FOR SWING ANGLE ESTIMATION IN AN ELECTRICAL POWER SYSTEM 审中-公开
标题翻译：用于在电力系统中摆动角度估计的系统和方法
公开(公告)号：US20150051852A1
公开(公告)日：2015-02-19
申请号：US14519526
申请日：2014-10-21
申请人： GENERAL ELECTRIC COMPANY
发明人： Yan Pan , William James Premerlani
IPC分类号： G01R21/133 , G01R25/00
CPC分类号： G01R21/133 , G01R25/00 , H02J3/24
摘要： A method includes obtaining a voltage phasor, a current phasor and a mechanical rotor angle of a source end generator. A receiving end generator impedance and a line impedance between the source end generator and a receiving end generator is also estimated. Furthermore, a swing angle between an internal voltage of the source end generator and an internal voltage of the receiving end generator as a function of obtained voltage phasor, current phasor, mechanical rotor angle and the impedances is estimated. A power swing condition is then determined based on the estimated swing angle.
摘要翻译：一种方法包括获得源端发生器的电压相量，电流相量和机械转子角度。还估计了源端发生器和接收端发生器之间的接收端发生器阻抗和线路阻抗。此外，估计源端发生器的内部电压与接收端发生器的内部电压之间的摆动角度作为获得的电压相量，电流相量，机械转子角度和阻抗的函数。然后基于估计的摆动角度确定功率摆动条件。

9. 发明授权

US08942108B2 Method and system for current differential protection 有权
标题翻译：电流差动保护方法及系统
公开(公告)号：US08942108B2
公开(公告)日：2015-01-27
申请号：US13714952
申请日：2012-12-14
申请人： General Electric Company
发明人： Yan Pan , William James Premerlani
IPC分类号： H04L12/28 , H04L12/24 , H02J13/00 , H04J3/06 , H04L12/40
CPC分类号： H04L41/0668 , H02H1/0061 , H02H3/305 , H02J13/00 , H02J13/0079 , H04J3/0638 , H04J3/0641 , H04L12/40 , H04L12/4035 , H04L41/0686 , H04L41/12
摘要： A differential protection system is provided. The differential protection system includes a local terminal configured to be communicatively coupled directly or indirectly with at least two remote terminals via at least three communication links to form a ring topology or a mesh topology. The differential protection system further includes a controller comprising a communication link decision unit and a clock unit associated with the local terminal. The communication link decision unit is configured to determine some of the at least three communication links as virtually disconnected such that the ring topology or the mesh topology is configured to be converted to a daisy chain topology. The clock unit is configured to time synchronize the local terminal with at least one of the at least two remote terminals when the local terminal and the at least two remote terminals are configured in the daisy chain topology.
摘要翻译：提供差动保护系统。差分保护系统包括被配置为经由至少三个通信链路直接或间接地与至少两个远程终端通信地耦合以形成环形拓扑或网格拓扑的本地终端。差分保护系统还包括控制器，其包括通信链路决定单元和与本地终端相关联的时钟单元。通信链路决定单元被配置为将所述至少三个通信链路中的一些确定为虚拟断开，使得环形拓扑或网状拓扑被配置为被转换为菊花链拓扑。时钟单元被配置为当本地终端和至少两个远程终端被配置在菊花链拓扑中时，使本地终端与至少两个远程终端中的至少一个进行时间同步。

10. 发明授权

US10797488B2 Systems and methods for operatively coupling a micro-grid to a bulk grid 有权
公开(公告)号：US10797488B2
公开(公告)日：2020-10-06
申请号：US15243974
申请日：2016-08-23
申请人： General Electric Company
发明人： Santosh Sambamoorthy Veda , William James Premerlani
IPC分类号： H02J3/00 , H02J3/46 , H02J3/42 , H02J3/04
摘要： A method for operatively coupling a plurality of generating units in at least one micro-grid to a bulk grid, where the at least one micro-grid is configurable to be operatively coupled to the bulk grid via a point of interconnection breaker is presented. The method includes, using a control unit operatively coupled to the at least one micro-grid and the bulk grid, determining one or more bulk grid side parameters and one or more micro-grid side parameters, comparing one or more of the one or more micro-grid side parameters with corresponding one or more bulk grid side parameters, and synchronizing each of the plurality of generating units in the at least one micro-grid with the bulk grid based on the comparison. Further, the method includes connecting simultaneously, using the point of interconnection breaker, each of the plurality of generating units to the bulk grid based on the synchronization.

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