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51. 发明申请

US20200244061A1 COMPLEX MULTIFUNTIONAL RELAY SYSTEM AND CONTROL METHOD THEREFOR 审中-公开
公开(公告)号：US20200244061A1
公开(公告)日：2020-07-30
申请号：US16490423
申请日：2017-10-24
申请人： WELLIM INC.
发明人： Sun-Tae AN , James WILLIAM MASTEN, JR.
IPC分类号： H02H3/16 , H02H1/00 , H02H3/10 , G05B19/042
摘要： Provided are a complex multifunctional relay system capable of complexly performing an overcurrent blocking function, an arc blocking function, and an earth leakage blocking function by a relay circuit, and a control method therefor. The complex multifunctional relay system includes an AC circuit including a hot line and a neutral line, a power control means connected in parallel to the hot line, insulation differential amplifiers circuit-connected to the hot line and the neutral line through current shunts, a microprocessor connected to the power control means and the insulation differential amplifiers to perform monitoring and control the power supply of the power control means, a first comparator connected to the current shunt and the insulation differential amplifier and connected to the microprocessor so as to check ground fault, and a second comparator connected between the current shunt/the insulation differential amplifier and the microprocessor so as to check arc fault.

52. 发明授权

US10677823B2 System and method of identifying path of residual current flow through an intelligent power strip 有权
公开(公告)号：US10677823B2
公开(公告)日：2020-06-09
申请号：US15863519
申请日：2018-01-05
申请人： Liebert Corporation
发明人： Kevin R. Ferguson
IPC分类号： G01R31/42 , G01R19/25 , G01R19/02 , H02H3/16 , H02H3/32 , H02H3/04 , G06F1/26 , G01R31/50 , G01R21/133
摘要： A system and method is disclosed for detecting a specific voltage phase, from a multiphase voltage source, and a specific outlet of an intelligent power strip, that is associated with a residual current flow. The method accomplishes this by using a system that employs a statistical time series analysis using a Pearson's correlation coefficient calculation to measure the linear dependence between the discretely sampled residual current waveform and each phase and outlet's discretely sampled current waveforms, in turn. A residual current as low as 1 mA can be accurately measured and its associated voltage phase source, as well as which outlet of an intelligent power strip it flows out of, can be reliably determined.

53. 发明授权

US10673230B2 Bipolar DC power transmission scheme 审中-公开
公开(公告)号：US10673230B2
公开(公告)日：2020-06-02
申请号：US15569860
申请日：2016-04-26
申请人： General Electric Technology GmbH
发明人： Robin Gupta , Robert Stephen Whitehouse
IPC分类号： H02H7/26 , G01R19/14 , G01R31/02 , H02H3/06 , H02J3/36 , H02M5/458 , H02M1/32 , G01R31/50 , H02H3/16
摘要： A bipolar DC power transmission scheme comprises: DC poles, each including a respective power transmission medium extending between two ends; a plurality of converters, wherein each end of the power transmission medium of the first pole is respectively operatively connected to a converter, and each end of the power transmission medium of the second pole is respectively operatively connected to a converters; a controller programmed to block one or more of the converters in response to a fault occurring on either of the first and second poles; and a monitoring device configured to identify the faulty poles on which the fault has occurred, wherein the controller is further programmed to deblock the or each blocked converter connected to the other of the poles after the monitoring device has identified the faulty one of the poles on which the fault has occurred.

54. 发明申请

US20200169076A1 METHOD FOR DETECTING AN OPEN-PHASE CONDITION OF A TRANSFORMER 审中-公开
公开(公告)号：US20200169076A1
公开(公告)日：2020-05-28
申请号：US16727227
申请日：2019-12-26
申请人： The UAB Research Foundation
发明人： Robert F. ARRITT , Roger C. DUGAN , Wayne E. JOHNSON , Gregory A. FRANKLIN
IPC分类号： H02H3/16 , H02P29/024 , H02H3/253 , H02H3/04 , G01R31/50 , G01R31/62 , G01R31/72
摘要： A method for detecting an open-phase condition of a transformer having a grounded-wye high voltage side connection including monitoring current flowing in a neutral connection on the high voltage side of the transformer in real time by voltage relaying and current relaying to identify an open phase condition signature in a signal capable of characterizing change of current magnitude. A current signal may be injected onto the neutral terminal and the zero-sequence mode of the transformer monitored to detect an open-phase condition indicated by an increase in network impedance and decrease or elimination of the injection current.

55. 发明授权

US10598715B2 System and method for automatic high resistance ground pulse activation and detection 有权
公开(公告)号：US10598715B2
公开(公告)日：2020-03-24
申请号：US14835163
申请日：2015-08-25
申请人： Eaton Corporation
发明人： David Glenn Loucks , Robert Thomas Wolfe , Steven Andrew Dimino , Daniel Edward Hrncir , Deborah Kaltwasser Mort , Alec Dane Burkle
IPC分类号： G01R31/08 , H02H3/16 , H02H3/17 , H02J13/00 , G01R31/02
摘要： A system for locating a ground fault in an HRG power distribution system includes an HRG pulsing system having a ground fault sensor to detect a ground fault, a pulsing contactor to introduce a pulsing current into the power distribution system, and a controller to control the pulsing contactor to introduce the pulsing current into the power distribution system in response to a ground fault detection by the ground fault sensor. Current sensors in the power distribution system monitor three-phase current signals on conductors of the power distribution system, with the current sensors positioned on distribution networks in the power distribution system and at a protection device included on each respective distribution network. A processor associated with each protection device and operably connected to the current sensors thereat receives signals from the current sensors for identifying a location of a ground fault in the power distribution system.

56. 发明授权

US10564207B2 System and method for ground fault detection 有权
公开(公告)号：US10564207B2
公开(公告)日：2020-02-18
申请号：US15409919
申请日：2017-01-19
申请人： Rockwell Automation Technologies, Inc.
发明人： Rangarajan M. Tallam , Jiangang Hu , Brian P. Brown
IPC分类号： G01R27/18 , G01R31/02 , H02M5/458 , G01R31/40 , B60L3/12 , H02H3/16 , B60L3/00 , B60L3/04 , H02H7/12
摘要： Power conversion systems, ground fault detection apparatus and methods to detect and identify ground faults in a power conversion system using AC coupling to sense a system voltage to determine a leakage flux linkage, and to identify a faulted converter phase based on a phase shift angle of the leakage flux linkage.

57. 发明申请

US20190393695A1 A METHOD FOR CONTROLLING A LEAKAGE CURRENT PROTECTION DEVICE IN A PHOTOVOLTAIC APPARATUS 审中-公开
公开(公告)号：US20190393695A1
公开(公告)日：2019-12-26
申请号：US16465366
申请日：2016-11-30
申请人： ABB Schweiz AG
发明人： Marco Belli , Diego Palumbo
IPC分类号： H02H3/353 , H02S40/32 , H02H3/16 , G01R31/02 , H02H7/20
摘要： The application includes a method to control a leakage current protection device in a photovoltaic apparatus, said photovoltaic apparatus being adapted to be electrically connected to an electric power distribution grid having one or more phase voltages at an AC section of the photovoltaic apparatus. The method includes executing a first control procedure to control the leakage current protection device, the first control procedure providing for a comparison of current check values indicative of leakage currents in the photovoltaic apparatus with one or more predefined current threshold values for the leakage currents. The method includes executing a monitoring procedure to check the phase voltages and identify possible relevant positive transients of the phase voltages. If the monitoring procedure identifies relevant positive transients of the phase voltages, one or more new current threshold values for the leakage currents are provided, the execution of the first control procedure is terminated and a second control procedure to control the leakage current protection device is executed, the second control procedure providing for a comparison of the current check values with the new current threshold values for the leakage currents, the second control procedure being executed for a predefined time interval only. After the predefined period of time has passed, the execution of the second monitoring procedure is terminated and the first control procedure is again executed.

58. 发明授权

US10511164B2 Apparatus for preventing electric shock in event of flooding and method therefor 有权
公开(公告)号：US10511164B2
公开(公告)日：2019-12-17
申请号：US15556701
申请日：2016-03-15
申请人： AMS CO., LTD
发明人： Mi Suk Seo
IPC分类号： H02H9/00 , G01R27/02 , H02H3/16 , H02H9/08 , G01R31/02 , H01M10/44 , H02J7/04
摘要： The present technology relates to an apparatus for preventing electric shock in the event of flooding and a method therefor. To this end, the apparatus for preventing electric shock in the event of flooding may comprise: a transformer for supplying a voltage using a neutral grounding method in a single-phase two-wire low-voltage power distribution system; an earth leakage circuit breaker connected to power output from the transformer, an electric currents measurement unit for measuring the amount of electric currents passing through the earth leakage circuit breaker, a control unit for calculating the contact resistance to be compensated for, using the amount of electric currents from the electric currents measurement unit, and transmitting a control signal corresponding thereto; and a contact resistance compensation unit for compensating for the contact resistance according to the control signal from the control unit.

59. 发明申请

US20190356127A1 ARC FAULT CIRCUIT INTERRUPTER 审中-公开
公开(公告)号：US20190356127A1
公开(公告)日：2019-11-21
申请号：US16524728
申请日：2019-07-29
申请人： Leviton Manufacturing Company, Inc.
发明人： Michael OSTROVSKY , John LIBRETTO , Ronald JANSEN , Michael KAMOR , Adam KEVELOS
IPC分类号： H02H3/16 , H02H3/04 , G01R31/02 , G08B21/18 , H02H1/00
摘要： An arc fault circuit interrupter is disclosed. This arc fault circuit interrupter can include any one or more of three different sensors such as a high frequency sensor, and any one of lower frequency sensors such as a current sensor or a differential sensor. The arc fault circuit interrupter can be configured as an in line arc fault circuit interrupter installed in a wall box. In addition, the arc fault circuit interrupter can include a processor configured to determine any one of a series arc fault, or a parallel arc fault.

60. 发明授权

US10476254B2 Protective device having a thin construction 有权
公开(公告)号：US10476254B2
公开(公告)日：2019-11-12
申请号：US15876270
申请日：2018-01-22
申请人： Pass & Seymour, Inc.
发明人： Richard Weeks , Kent R. Morgan , Jeffrey C. Richards , Gerald R. Savicki, Jr. , Bruce F. Macbeth
IPC分类号： H01H73/00 , H02H3/16 , H01H71/02 , H01H83/04 , H01H47/00 , H01H71/08 , H01H71/10 , H01H71/50 , H01H71/58
摘要： An electrical wiring device including: a housing, a plurality of terminals electrically connected to a contact structure including a conductive member having at least one contact, wherein in response to a make-force each contact structure is configured to perform a first movement to electrically connect each of the contacts on each contact structure to one of the contacts on a different one of the fixed contact structures in the reset state, thereby electrically connecting the terminals in the reset state; a circuit interrupting assembly being configured to perform a first linear movement in response to a break-force in order to cause each contact structure to perform a second movement in a direction opposite the first movement to decouple each of the contacts on each contact structure from one of the contacts on a different one of the fixed contact structures thereby decoupling the terminals to effect a tripped state; a protective electrical assembly, and a latching element configured to restrain the circuit interrupting assembly in a reset state and to disengage the circuit interrupting assembly in a tripped state, the latching element positioned to impart and angular force on a catch pin.

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