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公开(公告)号：US20230296713A1
公开(公告)日：2023-09-21
申请号：US18200554
申请日：2023-05-22
申请人： UBICQUIA, INC.
摘要： A transformer monitor includes a housing and at least two connectors. The housing has a first end and a second end opposite the first end. A first connector is positioned proximate the housing’s first end and configured for connection to a first cable assembly that outputs signals representative of a primary input current to the transformer. A second connector is positioned proximate the housing’s second end and configured for connection to a second cable assembly that outputs signals representative of a secondary output current of the transformer. The connectors are oriented such that the first cable assembly extends away from the housing’s first end in a first direction when the cable assembly is connected to the first connector and the second cable assembly extends away from the housing’s second end in a second direction generally opposite to the first direction when the cable assembly is connected to the second connector.
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公开(公告)号：US20230296694A1
公开(公告)日：2023-09-21
申请号：US18100006
申请日：2023-01-23
IPC分类号： G01R31/62 , H01F41/04 , G01K13/00 , G01K1/14 , G01K11/32 , H01F27/28 , H01F27/40 , H01F41/12
CPC分类号： G01R31/62 , H01F41/04 , G01K13/00 , G01K1/14 , G01K11/32 , H01F27/2871 , H01F27/402 , H01F41/12 , H01F2027/404 , H01F27/323
摘要： Sensing methods and systems for transformers, and the construction thereof, are described herein. Example transformer systems and example methods for constructing a core for the system are disclosed. The example system includes a core with a bottom plate, two or more limbs mounted to the bottom plate and a top plate enclosing the core. At least one of the bottom plate, the limbs and the top plate is formed with a sensing component therein. The sensing component can be mounted to a spacer layer assembled within a stack of laminated layers. The sensing component can be mounted within a path defined within the spacer layer, for example. Methods for detecting operating conditions within the transformer are also disclosed.
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公开(公告)号：US11754640B2
公开(公告)日：2023-09-12
申请号：US17219059
申请日：2021-03-31
摘要： A device including a first voltage domain and a second voltage domain is provided, the voltage domains being separated by an isolation barrier. In addition, the device includes a scratch detection circuit including a first and a second electrode at a distance of less than 2 μm.
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64.发明公开公开(公告)号：US20230258706A1
公开(公告)日：2023-08-17
申请号：US18015400
申请日：2020-07-17
发明人： Fabrizio Negri
IPC分类号： G01R31/12 , G01R31/62 , G01R23/167 , G08B29/06 , H01H9/50
CPC分类号： G01R31/1272 , G01R23/167 , G01R31/62 , G08B29/06 , H01H9/50
摘要： A method for partial discharge recognition in high voltage applications and a high voltage unit using the method, includes the steps of detecting a signal, transforming the signal from time to frequency domain, cutting frequencies above a defined threshold, and retransform the truncated signal from frequency to time domain. The information content of detected and truncated signals is determined and compared.
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公开(公告)号：US12107410B2
公开(公告)日：2024-10-01
申请号：US17677879
申请日：2022-02-22
申请人： S&C Electric Company
CPC分类号： H02H7/045 , G01R31/62 , H01F27/402 , H01F2027/406
摘要： A system and method for determining when an electronic interrupting device will open in response to detecting overcurrent, where the interrupting device protects a transformer in a power distribution network. The method includes obtaining a time/current through fault protection curve that is defined by a plurality of time/current points for the transformer that identifies when the transformer may experience thermal or mechanical damage in response to a certain current flow over a certain time in the transformer windings, selecting a time multiplier, and determining an operating curve for the interrupting device by multiplying the multiplier and a time portion of each of the plurality of time/current points on the through fault protection curve, where the operating curve identifies when the interrupting device will open in response to a certain current flow over a certain time.
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公开(公告)号：US20240319291A1
公开(公告)日：2024-09-26
申请号：US18697228
申请日：2021-10-01
发明人： Fabrizio Negri
CPC分类号： G01R31/62 , G01R31/1245 , H01B17/005 , H01B17/28
摘要： A bushing and a method for monitoring the bushing. The bushing is a high-voltage DC bushing with a test tap. The high-voltage DC bushing arrangement includes a monitoring device configured to inject a voltage and/or current pulse signal via the test tap and to detect and process a corresponding response signal. There is also described a method for operating an HVDC bushing, an HVDC transformer, and a converter arrangement with the bushing.
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公开(公告)号：US12099096B2
公开(公告)日：2024-09-24
申请号：US17665867
申请日：2022-02-07
CPC分类号： G01R31/62 , H02J3/02 , B64D41/007 , B64D2221/00 , H02J2310/44
摘要： A method includes performing a test for transformer rectifier unit (TRU) backfeed protection by removing AC power supplied to the TRU but keeping the TRU contactor closed for a first predetermined span of time. The method includes observing the TRU for a second predetermined span of time. The method includes determining if the contactor opens during the second span of time, that a TRU backfeed protection is functional and passes the test, and determining if the contactor does not open during the second span of time, that the TRU backfeed protection has failed the test.
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68.发明公开公开(公告)号：US20240192287A1
公开(公告)日：2024-06-13
申请号：US18554298
申请日：2022-03-30
申请人： ONEPREDICT CO., LTD.
发明人： Bo Seong SEO , Jae Kyung SHIN
摘要： A method for determining an integrity factor through machine learning, and a device for performing such a method can include the steps in which: a device status determination device determines an integrity feature on the basis of machine learning; the device state determination device generates an integrity plane on the basis of the integrity feature; the device state determination device receives target input data of a target device; the device state determination device determines an integrity factor corresponding to the target input data on the basis of the integrity plane; and the device status determination device determines the status of the target device on the basis of the integrity factor.
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公开(公告)号：US11946983B2
公开(公告)日：2024-04-02
申请号：US17471787
申请日：2021-09-10
申请人： ABB Schweiz AG
CPC分类号： G01R31/62 , G01R35/02 , H01F27/027 , H01F30/16 , H01F38/30
摘要： A current transformer includes a housing including generally cylindrical outer and inner walls defining an internal chamber, a front face enclosing one end of the internal chamber, a base, and a central opening defined by the inner wall. A generally toroidal current transformer core is disposed within the internal chamber. A secondary wiring is disposed about the transformer core and is configured to generate a current in response to magnetic flux in the transformer core. A pin housing is disposed on the front face of the housing adjacent the base. The pin housing has electrically conductive pins. A test wire passes through the central opening. The secondary wiring is electrically connected to a first pair of the pins and the test wire is electrically connected to a second pair of the pins.
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公开(公告)号：US11946982B2
公开(公告)日：2024-04-02
申请号：US17090559
申请日：2020-11-05
申请人： GRID20/20, Inc.
IPC分类号： G01R31/62 , G01R19/165 , G01R19/25 , G01R22/06 , G01R31/00 , G01R31/40 , G01R31/42 , H02S50/00 , H04Q9/00 , H04Q9/02 , G01K13/00 , H02S50/10 , H04L67/12
CPC分类号： G01R31/62 , G01R19/16538 , G01R19/25 , G01R19/2513 , G01R22/063 , G01R31/002 , G01R31/40 , G01R31/42 , H04Q9/00 , H04Q9/02 , G01K13/00 , H02S50/00 , H02S50/10 , H04L67/12 , H04Q2209/40 , H04Q2209/60 , Y04S40/18
摘要： A transformer monitoring device has one or more voltage sensors and/or one or more current sensors integral with a housing for detecting a voltage of a power cable of a transformer. The transformer monitoring device can be configured to monitor voltage levels, and cause alerts to be issued if voltage levels drop and/or spike beyond operator-established tolerance(s). The transformer monitoring device further has one or more environmental sensors including a smoke sensor, ambient temperature sensor, external transformer temperature sensor, a fire/wildfire sensor, a humidity sensor, a noxious gases sensor, a seismic or vibration sensor, and/or a surface and/or ground temperature sensor configured to detect smoke, and/or temperature change indicators, and/or other environmental changes in an area surrounding the transformer, and a processor configured to monitor the smoke sensor, temperature sensors, and/or other environmental change sensors, the processor configured to transmit an alert if smoke, temperature and/or other environmental conditions are detected surrounding the transformer.
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