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61. 发明授权

US11646563B2 Transformer protector with internal fault detector 有权
公开(公告)号：US11646563B2
公开(公告)日：2023-05-09
申请号：US17524141
申请日：2021-11-11
申请人： S&C Electric Company
发明人： Thomas J. Tobin
IPC分类号： H02H3/06 , H02H7/04 , H02H1/00
CPC分类号： H02H3/066 , H02H1/0007 , H02H7/04
摘要： A fault detection system that includes a recloser configured to perform a reclosing operation in response to detecting overcurrent, where the recloser includes a communications device for receiving communications signals. The system also includes a transformer having an outer can, a sensor mounted to the can and extending into the can for measuring pressure therein, where the sensor includes a mechanical indicator that extends when overpressure is detected. The transformer further includes a radio mounted to the can and coupled to the sensor, where the radio includes a switch coupled to the mechanical indicator and a transmitter. When the mechanical indicator extends in response to detecting overpressure in the can it causes the switch to close which causes the transmitter to send a signal that is received by the communications device, which prevents the recloser from reclosing.

62. 发明申请

US20180226796A1 METHOD AND SYSTEM FOR IMPROVED OPERATION OF POWER GRID COMPONENTS IN THE PRESENCE OF DIRECT CURRENT (DC) 审中-公开
公开(公告)号：US20180226796A1
公开(公告)日：2018-08-09
申请号：US15887781
申请日：2018-02-02
申请人： Emprimus, LLC
发明人： GEORGE ANDERSON , GREG FUCHS , WALLACE JENSEN , GALE K. NORDLING , TERRY LEE VOLKMANN , FREDERICK R. FAXVOG , DAVID BLAKE JACKSON
IPC分类号： H02J3/01 , H02H7/04
CPC分类号： H02J3/01 , H02H3/05 , H02H3/332 , H02H7/04 , H02H7/042 , H02H7/222
摘要： Methods and systems for ensuring operation of one or more circuit breakers electrically connected on a phase of a multi-phase power line on a transformer electrically connected within a power grid at a substation are disclosed. The method includes detecting, at the transformer, a direct current component of a multi-phase power signal received at the transformer, the direct current component comprising a direct current received at a transformer neutral, the transformer neutral being electrically connected to a ground. The method further includes determining whether the direct current is above a predetermined threshold, the predetermined threshold being based on a determination that, above the predetermined threshold, at least one of the one or more circuit breakers is incapable of reliable operation. The method includes, in response to a determination that the direct current component is above the predetermined threshold, blocking the direct current between the transformer neutral and a ground.

63. 发明申请

US20170292999A1 TRANSFORMER MONITORING AND DATA ANALYSIS SYSTEMS AND METHODS 审中-公开
公开(公告)号：US20170292999A1
公开(公告)日：2017-10-12
申请号：US15357766
申请日：2016-11-21
申请人： GRID20/20, Inc.
发明人： Randall Turner , Michael Vandenberg , Joseph Beaudet , Qi Fan Lu
IPC分类号： G01R31/42 , G01R21/133
CPC分类号： G01R31/42 , G01R19/2513 , G01R21/133 , G01R31/027 , G06F11/0796 , H02H3/165 , H02H7/04
摘要： The present disclosure is a transformer monitoring system that has a transformer monitoring device that reads a measurement on at least one node of a transformer. Additionally, the system has a processor that analyzes the measurement and compares the measurement to a threshold value. In addition, the processor transmits an alert to utility personnel if the comparison indicates that the system is not operating properly.

64. 发明申请

US20170170648A1 PROTECTIVE DEVICE FOR PROTECTING A TRANSFORMER AGAINST GEOMAGNETICALLY INDUCED CURRENTS 审中-公开
公开(公告)号：US20170170648A1
公开(公告)日：2017-06-15
申请号：US15370722
申请日：2016-12-06
申请人： Siemens Aktiengesellschaft
发明人： Peter HAMBERGER
IPC分类号： H02H7/04 , H01F27/28
CPC分类号： H02H7/04 , H01F27/28 , H01F27/38
摘要： A protective device for a transformer which is connected on the high-voltage side via supply lines to a network for transmission and distribution of electrical energy, wherein the transformer includes a neutral grounding, where each supply line is connected to ground via a grounding transformer , and where the grounding transformer includes a neutral point resistance which is lower than the neutral point resistance of the neutral grounding, such that Geomagnetically Induced Current flowing on the supply lines is diverted to ground.

65. 发明授权

US09564753B2 Transformer protection circuit and method 有权
标题翻译：变压器保护电路及方法
公开(公告)号：US09564753B2
公开(公告)日：2017-02-07
申请号：US14792211
申请日：2015-07-06
申请人： Emprimus, LLC
发明人： Frederick R. Faxvog , Wallace Jensen , Terrence R. Noe , Craig Eid , David Blake Jackson , Greg Fuchs , Gale Nordling
IPC分类号： H02H3/00 , H02H9/08 , H02H7/04 , H02H3/33 , H02H3/52 , H02H3/10 , H02H3/08 , H02H3/16
CPC分类号： H02H9/08 , H02H3/08 , H02H3/105 , H02H3/16 , H02H3/33 , H02H3/52 , H02H7/04
摘要： Systems and methods for protecting an electrical component in an alternating current system that includes a transformer are disclosed. In one aspect, a circuit includes a switch assembly connected between a transformer neutral of a transformer and a ground and having an open position and a closed position. In normal operation, the switch remains in a closed position. The circuit further includes a DC blocking component positioned in parallel with the switch assembly and connected between the transformer neutral and the ground, a voltage probe connected between the transformer neutral and ground and configured to monitor an instantaneous voltage level at the transformer neutral, and a control circuit configured to control the switch assembly, the control circuit including a sensor configured to actuate the switch assembly to an open position at least upon detection of a harmonic signal in at least one phase of the transformer or a predetermined threshold of DC or quasi DC current between the transformer neutral and the ground.
摘要翻译：公开了用于保护包括变压器的交流系统中的电气部件的系统和方法。在一个方面，一种电路包括连接在变压器的变压器空档与地面之间并具有打开位置和闭合位置的开关组件。在正常操作中，开关保持在关闭位置。电路还包括与开关组件并联设置并连接在变压器中性线和地之间的直流阻塞部件，连接在变压器中性线和地之间并被配置为监视变压器中性点处的瞬时电压电平的电压探头，以及控制电路被配置为控制开关组件，所述控制电路包括被配置为至少在检测到所述变压器的至少一个相位中的谐波信号或DC或准DC的预定阈值时将所述开关组件致动到打开位置的传感器变压器中性点与地之间的电流。

66. 发明授权

US09520712B2 Method and system for controlling the turn-on time of a device that includes a magnetic circuit 有权
标题翻译：用于控制包括磁路的装置的接通时间的方法和系统
公开(公告)号：US09520712B2
公开(公告)日：2016-12-13
申请号：US14117840
申请日：2012-05-15
申请人： Didier Cavallera , Jean-Louis Coulomb , Olivier Chadebec , Bruno Caillault , Francois-Xavier Zgainski
发明人： Didier Cavallera , Jean-Louis Coulomb , Olivier Chadebec , Bruno Caillault , Francois-Xavier Zgainski
IPC分类号： H01H47/00 , H01H83/00 , H02J7/00 , H02H9/00 , G01R33/00 , G01R33/02 , G01R33/14 , G01R33/04 , H02H7/04
CPC分类号： H02H9/005 , G01R33/0023 , G01R33/02 , G01R33/04 , G01R33/14 , H02H7/04 , H02H9/002 , Y10T307/826
摘要： A method and a system for controlling the switching time of a device that includes a magnetic circuit and a conductive winding. The method includes acquiring a measurement of the magnetic field generated by the residual flux, by a sensor placed near the magnetic circuit; processing the acquired measurements to infer the residual flux in the magnetic circuit; determining, on the basis of the residual flux, the optimal time for switching on the device. The method also includes switching on a three-phase transformer. The transformer includes a primary conductive winding and a secondary conductive winding surrounded by an enclosure. A magnetic field sensor is on the magnetic circuit and/or on one outer surface of the enclosure.
摘要翻译：一种用于控制包括磁路和导电绕组的装置的切换时间的方法和系统。该方法包括：通过放置在磁路附近的传感器获取由残余磁通产生的磁场的测量值; 处理所获取的测量值以推断磁路中的剩余通量; 基于剩余通量确定用于接通装置的最佳时间。该方法还包括接通三相变压器。变压器包括主导电绕组和由外壳包围的次级导电绕组。磁场传感器位于磁路和/或外壳的一个外表面上。

67. 发明授权

US09502187B2 Method for controlling a current-interrupting device in a high-voltage electrical network 有权
标题翻译：用于控制高压电网中的电流中断装置的方法
公开(公告)号：US09502187B2
公开(公告)日：2016-11-22
申请号：US14115338
申请日：2012-04-30
申请人： Thierry Jung , Tian Liu , Houria Siguerdidjane , Marc Petit
发明人： Thierry Jung , Tian Liu , Houria Siguerdidjane , Marc Petit
IPC分类号： H01H7/16 , H02H3/02 , H02H7/04
CPC分类号： H01H7/16 , H02H3/021 , H02H7/04
摘要： The invention relates to a method of controlling switchgear in order to estimate the remanent flux value of a power transformer during disconnection from a high-voltage electrical network using voltage measurements delivered by a capacitive voltage transformer by correcting the transfer function of the capacitive voltage transformer, and in which said value is delivered to a controller that determines the optimum switchgear switching instant.
摘要翻译：本发明涉及一种控制开关设备的方法，以便通过校正电容式电压互感器的传递函数，通过电容式电压互感器提供的电压测量来估计断开与高压电网之间的电力变压器的剩余通量值，并且其中所述值被传送到确定最佳开关设备切换瞬间的控制器。

68. 发明授权

US09337762B1 System and method for magnetizing a transformer in an electrical system prior to energizing the electrical system 有权
标题翻译：在对电气系统通电之前，用于在电气系统中磁化变压器的系统和方法
公开(公告)号：US09337762B1
公开(公告)日：2016-05-10
申请号：US14570377
申请日：2014-12-15
申请人： EATON CORPORATION
发明人： Irving Albert Gibbs , Thomas Arthur Farr , Ron Carl Schueneman
IPC分类号： H02P27/00 , H02P13/12 , H02P1/16
CPC分类号： H02P13/12 , H02H1/043 , H02H7/04 , H02H9/002 , H02M1/36 , H02M1/40 , H02P1/16 , H02P27/06
摘要： An electrical system includes a transformer structured to be selectively coupled to an AC source that provides a main AC voltage, the transformer having a number of sets of primary windings and a number of sets of secondary windings, and a charging module structured to generate a magnetizing AC voltage. The charging module is structured to selectively provide the magnetizing AC voltage to: (i) one of the number of sets primary windings, or (ii) one of the number of sets secondary windings. The magnetizing AC voltage is such that responsive to the magnetizing AC voltage being provided to one of the number of sets of primary windings or one of the number of sets of secondary windings, one or more of the number of sets of primary windings will be magnetized in a manner wherein a flux of the one or more of the number of primary windings is in phase with the main AC voltage provided from the AC source.
摘要翻译：电气系统包括被构造成选择性地耦合到提供主交流电压的交流电源的变压器，所述变压器具有多组初级绕组和多个次级绕组，以及充电模块，其被构造成产生磁化交流电压。充电模块被构造成选择性地提供磁化AC电压以：（i）初级绕组的组数之一，或（ii）次级绕组的数量之一。磁化AC电压使得响应于磁化AC电压被提供给多个初级绕组组中的一个或多个次级绕组组中的一个，一组或多组次级绕组将被磁化以这种方式，其中一个或多个初级绕组中的一个或多个与从AC源提供的主AC电压同相。

69. 发明授权

US09270110B2 Fault current limiter with interleaved windings 有权
标题翻译：具有交错绕组的故障限流器
公开(公告)号：US09270110B2
公开(公告)日：2016-02-23
申请号：US14101990
申请日：2013-12-10
申请人： Varian Semiconductor Equipment Associates, Inc.
发明人： Kasegn D. Tekletsadik
IPC分类号： H02H3/08 , H02H9/02 , H02H7/04 , H02H9/04
CPC分类号： H02H9/02 , H01F38/023 , H02H7/04 , H02H9/021 , H02H9/023 , H02H9/04 , H02H9/041 , Y02E40/69
摘要： In one embodiment a fault current limiter comprises a current splitting reactor having interleaved windings to reduce an insertion impedance of the fault current limiter during non-fault conditions. The current splitting reactor having interleaved windings may include a first winding, the first winding including a plurality of sub-windings and a second winding, the second winding including a plurality of sub-windings, the sub-windings of the first winding and the sub-windings of the second winding wounds about the core and interleaved.
摘要翻译：在一个实施例中，故障限流器包括具有交错绕组的电流分流电抗器，以在非故障条件期间减小故障限流器的插入阻抗。具有交错绕组的电流分束电抗器可以包括第一绕组，第一绕组包括多个子绕组和第二绕组，第二绕组包括多个子绕组，第一绕组和子绕组的次绕组第二绕组的绕组围绕磁芯缠绕并交织。

70. 发明授权

US09252589B2 Transformer inrush current restraining control equipment 有权
标题翻译：变压器浪涌电流抑制控制设备
公开(公告)号：US09252589B2
公开(公告)日：2016-02-02
申请号：US13760704
申请日：2013-02-06
申请人： Kodensya Co., Ltd.
发明人： Toshiyasu Kai , Yoshihide Hase
IPC分类号： H02H3/26 , H02H7/04 , H02H7/045 , H02H9/00 , H01H9/56
CPC分类号： H02H7/04 , H01H9/563 , H02H7/0455 , H02H9/002
摘要： There is provided with a transformer inrush current restraining control equipment that provide useful practice to effectively restrain transformer inrush current which would be inevitably caused whenever a transformer under out of service is going to be put into operation by the related breaker closing operation. The transformer inrush current restraining control equipment 10 includes a voltage measuring unit 1; a true residual fluxes timing calculating unit 2; a core-flux calculating unit 3; a true residual flux calculating unit 4; a breaker closing phase angular timing calculating unit 5; a breaker closing phase angular timing controlling unit 6.
摘要翻译：提供了一种变压器浪涌电流抑制控制设备，其提供了有效地抑制变压器浪涌电流的有用实践，这在每次通过相关的断路器闭合操作投入运行的变压器将不可避免地导致。变压器浪涌电流抑制控制装置10包括电压测量单元1; 真实剩余通量定时计算单元2; 核心流量计算单元3; 真实剩余通量计算单元4; 断路器闭合相位角定时计算单元5; 断路器闭合相位角定时控制单元6。

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