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1. 发明授权

US2244386A Transformer 失效
公开(公告)号：US2244386A
公开(公告)日：1941-06-03
申请号：US27476339
申请日：1939-05-20
申请人： GEN ELECTRIC
发明人： GUGLIELMO CAMILLI
IPC分类号： H01F38/34
CPC分类号： H01F38/34

2. 发明授权

US1807797A Sighted rump 失效
公开(公告)号：US1807797A
公开(公告)日：1931-06-02
申请号：US1807797D
IPC分类号： H01F38/34
CPC分类号： H01F38/34 , Y10T307/297

3. 发明授权

US09753469B2 Energy harvesting device 有权
公开(公告)号：US09753469B2
公开(公告)日：2017-09-05
申请号：US15386024
申请日：2016-12-21
申请人： Electric Power Research Institute Inc.
发明人： Norman D. McCollough
IPC分类号： H01F30/12 , G05F1/335 , G05F1/325 , H01F38/34 , H02M7/217 , H01F38/30
CPC分类号： G05F1/335 , G05F1/325 , H01F38/14 , H01F38/22 , H01F2038/305
摘要： A device for harvesting energy from a power line carrying AC current including: a transformer having a core with separate first and second sections, the core being formed of ceramic material or layered nickel alloy tape; a first secondary winding wound around the first section of the core; a second secondary winding wound around the second section of the core; a first DC core-flux control winding wound around the first section of the core; and a second DC core-flux control winding wound around the second section of the core; wherein the core is configured to be in operative communication with a magnetic field radiated from the power line, such that an AC voltage is generated in the first and second secondary windings, and the maximum AC voltage produced by the first and second secondary windings is limited by the first and second DC core-flux control windings.

4. 发明授权

US5432438A Combined current and voltage transformer for a metal-enclosed gas-insulated high-voltage switching station 失效
标题翻译：用于金属封闭气体绝缘高压开关站的组合电流和电压互感器
公开(公告)号：US5432438A
公开(公告)日：1995-07-11
申请号：US904863
申请日：1992-06-26
申请人： Rudolf Baumgartner , Ken Y. Haffner , Andrzej Kaczowski
发明人： Rudolf Baumgartner , Ken Y. Haffner , Andrzej Kaczowski
IPC分类号： G01R15/14 , G01R15/18 , H01F27/20 , H01F38/34 , H01F38/36 , G01R19/00 , G08B21/00
CPC分类号： H01F38/36 , G01R15/142 , G01R15/18
摘要： A combined current and voltage transformer for a metal-enclosed, gas-insulated high-voltage switching station. It has a current and voltage sensor (10) and a signal processing device connected following the current and voltage sensor (10). A coil (14) wound in the shape of a torus serves as current sensor, and a hollow cylindrical test electrode (15) serves as voltage sensor. After installation of the current and voltage sensor (10) in the metal enclosure (4), the coil (14) and test electrode (15) concentrically surround a conductor (5) of the switching station. This combined current and voltage transformer is cost effective in production, has small dimensions, and a high measurement accuracy. This is achieved when the current and voltage sensors are constructed such that signals corresponding to the temporal variation in the current to be determined and in the voltage to be determined are present at their outputs, and the signal processing device has at least one integration device on which the output signals of the current and voltage sensors (10) act.
摘要翻译：一种用于金属封闭，气体绝缘高压开关站的组合电流和电压互感器。它具有电流和电压传感器（10）以及在电流和电压传感器（10）之后连接的信号处理装置。卷绕成圆环形状的线圈（14）用作电流传感器，中空圆柱形测试电极（15）用作电压传感器。在金属外壳（4）中安装电流和电压传感器（10）之后，线圈（14）和测试电极（15）同心地围绕开关站的导体（5）。该组合式电压互感器在生产中具有成本效益，尺寸小，测量精度高。这是在电流和电压传感器被构造成使得对应于要确定的电流的时间变化和要确定的电压的信号存在于其输出端上的情况下实现的，并且信号处理装置具有至少一个集成装置电流和电压传感器（10）的输出信号作用。

5. 发明授权

US10830801B2 VA metering in delta-wired electrical service 有权
公开(公告)号：US10830801B2
公开(公告)日：2020-11-10
申请号：US15886642
申请日：2018-02-01
申请人： Landis+Gyr Innovations, Inc.
发明人： John T. Voisine
IPC分类号： G01R21/133 , H01F38/14 , H02B1/03 , H01F38/34 , G01R21/06
摘要： An arrangement includes an A/D converter and a processing circuit. The A/D converter is configured to generate digital samples of voltage and current waveforms in a polyphase electrical system. The processing circuit is operably coupled to receive the digital samples from the A/D converter. The processing circuit configured is to obtain contemporaneous phase current and voltage samples IA, IB, IC and/or IN, and VA, VB, VC. The processing circuit is further configured to determine source leg current sample values based on three of the current samples of IA, IB, IC, and IN, and also based on a ratio of the impedance on one leg of a center-tapped source transformer secondary winding to another secondary winding of a source transformer. The processing circuit is further configured to determine a VA value based at least in part on the source leg current samples. The processing circuit is further configured to provide information representative of the VA calculation to one of a group consisting of a display, a communication circuit, a memory and a billing calculation unit.

6. 发明授权

US5890096A Unconventional measurement transformer 失效
标题翻译：非常规测量变压器
公开(公告)号：US5890096A
公开(公告)日：1999-03-30
申请号：US743934
申请日：1996-11-05
申请人： Denis Chatrefou , Jean-Francois Mironneau , Philippe Delbos
发明人： Denis Chatrefou , Jean-Francois Mironneau , Philippe Delbos
IPC分类号： G01R15/24 , H01F38/34
CPC分类号： G01R15/24
摘要： The unconventional measurement transformer for protection and/or measurement equipment of a three-phase electricity grid delivers digital information representative of a voltage or of a current of an electricity line by making use of optical sensors that are provided in sufficient number to achieve a certain amount of redundancy in the measurement paths. The output paths of the optical sensors are processed by digital processing means to validate said voltage or current digital information by a majority vote. Advantage is taken of features specific to three-phase high voltage and to the performance of such optical sensors to reduce the number of optical sensors required in an unconventional measurement transformer to obtain a degree of redundancy.
摘要翻译：用于三相电网的保护和/或测量设备的非常规测量变压器通过使用提供足够数量的光学传感器来传送表示电力线的电压或电流的数字信息，以实现一定量的测量路径中的冗余。光学传感器的输出路径由数字处理装置处理，以通过多数表决来验证所述电压或当前的数字信息。具有三相高电压特性以及这种光学传感器的性能优点，以减少非常规测量变压器中所需的光学传感器的数量，以获得一定程度的冗余度。

7. 发明授权

US4074193A Combined current and voltage measuring apparatus 失效
标题翻译：组合电流和电压测量装置
公开(公告)号：US4074193A
公开(公告)日：1978-02-14
申请号：US523851
申请日：1974-11-14
申请人： Werner Kohler
发明人： Werner Kohler
IPC分类号： G01R15/18 , G01R15/14 , H01F38/34 , H01F38/36 , G01R1/20 , G01R19/00
CPC分类号： G01R15/142 , H01F38/36
摘要： A combined current and voltage measuring apparatus for measuring voltage and current on a rod-shaped primary conductor for conducting current at an upper potential includes a cast resin body wherein there is embedded the sensor of a current measuring unit. The case resin body is arranged in surrounding relation to the primary conductor and, in addition to carrying the sensor, it is also utilized as dielectric for the upper potential capacitor of a voltage divider which supplies the amplifier of a capacitive voltage measuring unit. Embedded in the cast resin body is a cylindrical electrode which forms with the rod-shaped primary conductor extending through the electrode the capacitor on the high-voltage side of the capacitive voltage divider. The sensor of the current measuring unit contains a winding without a ferrous core which surrounds the outside of the cylindrical electrode.

8. 发明申请

US20170199533A1 ENERGY HARVESTING DEVICE 审中-公开
公开(公告)号：US20170199533A1
公开(公告)日：2017-07-13
申请号：US15386024
申请日：2016-12-21
申请人： Electric Power Research Institute Inc.
发明人： Norman D. MCCOLLOUGH
IPC分类号： G05F1/335 , H01F38/34 , G05F1/325
CPC分类号： G05F1/335 , G05F1/325 , H01F38/14 , H01F38/22 , H01F2038/305
摘要： A device for harvesting energy from a power line carrying AC current including: a transformer having a core with separate first and second sections, the core being formed of ceramic material or layered nickel alloy tape; a first secondary winding wound around the first section of the core; a second secondary winding wound around the second section of the core; a first DC core-flux control winding wound around the first section of the core; and a second DC core-flux control winding wound around the second section of the core; wherein the core is configured to be in operative communication with a magnetic field radiated from the power line, such that an AC voltage is generated in the first and second secondary windings, and the maximum AC voltage produced by the first and second secondary windings is limited by the first and second DC core-flux control windings.

9. 发明授权

US09472337B2 Electrostatic shield for a transformer 有权
标题翻译：用于变压器的静电屏蔽
公开(公告)号：US09472337B2
公开(公告)日：2016-10-18
申请号：US14111106
申请日：2012-04-12
申请人： Steven A. Shaw , Jashbhai S. Patel
发明人： Steven A. Shaw , Jashbhai S. Patel
IPC分类号： H01F27/32 , H01F27/36 , G01V3/10 , H01F38/20 , H01F17/06 , H01F38/28 , H01F41/00 , H01F38/34
CPC分类号： H01F27/362 , H01F38/20 , H01F38/28 , H01F38/34 , H01F41/00 , Y10T29/49073
摘要： An electrostatic shield for controlling the electrostatic field between a high voltage conductor and a low voltage conductor in an instrument transformer is provided. The instrument transformer has a current transformer and a voltage transformer. The current transformer has a split core which includes a first core segment and a second core segment. When the first core segment adjoins the second core segment, a current transformer is formed, having a core formed from the first and second core segments. The high voltage conductor runs between the first and second core segments of the current transformer. The first core segment is encapsulated in a polymer resin and when encapsulated, forms a first encasement. The second core segment has a low voltage winding mounted thereon. The electrostatic shield is disposed between the low voltage winding and the high voltage conductor. A second encasement is formed by encapsulating the electrostatic shield, low voltage winding and second core segment in a polymer resin.
摘要翻译：提供了用于控制仪器变压器中的高压导体和低压导体之间的静电场的静电屏蔽。仪表变压器有一个电流互感器和一个电压互感器。电流互感器具有分开的芯，其包括第一芯部段和第二芯部段。当第一芯段与第二芯段相邻时，形成具有由第一和第二芯段形成的芯的电流互感器。高压导体在电流互感器的第一和第二芯段之间延伸。第一核心部分被封装在聚合物树脂中，并且当被包封时，形成第一包装。第二芯段具有安装在其上的低电压绕组。静电屏蔽设置在低压绕组和高压导体之间。通过将静电屏蔽，低压绕组和第二芯段封装在聚合物树脂中来形成第二包装。

10. 发明申请

US20080001694A1 Organic Combined Insulated Dry Electronic Transformer for Outputting the Optical Signals 审中-公开
标题翻译：有机组合绝缘干电子变压器，用于输出光信号
公开(公告)号：US20080001694A1
公开(公告)日：2008-01-03
申请号：US11666106
申请日：2005-06-30
申请人： Ruzhang Wang
发明人： Ruzhang Wang
IPC分类号： H01F38/34
CPC分类号： G01R15/181 , G01R15/06 , G01R15/142 , G01R15/16 , H01F38/20 , H01F38/28
摘要： An organic combined insulated dry electronic transformer for outputting an optical signal, in which an organic insulated capacitor voltage-divider insulator is used as the main insulator to bear all the whole high voltage. A coreless coil is wound around the outside of the tap of capacitance plate in the capacitor voltage-divider insulator to measure current; or a low voltage signal is taken from the capacitance plate adjacent to the tap of capacitance plate in the capacitor voltage-divider insulator to measure voltage; then the received current signal or the voltage signal is transformed into an optical signal by a converter that converts an electric signal into an optical signal and then outputted. The coreless coil as a current sensor has ground potential and the capacitor as a voltage sensor has low potential.
摘要翻译：一种用于输出光信号的有机组合绝缘干式电子变压器，其中使用有机绝缘电容器分压绝缘体作为主要绝缘体承受全部高电压。无电芯线圈缠绕在电容器分压绝缘体中电容平板的抽头外侧，以测量电流; 或者从与电容器分压绝缘体中的电容板的抽头相邻的电容板获取低电压信号，以测量电压; 那么接收的电流信号或电压信号通过转换器转换成光信号，转换器将电信号转换成光信号，然后输出。作为电流传感器的无芯线圈具有接地电位，并且作为电压传感器的电容器具有低电位。

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