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公开(公告)号：US10998715B2
公开(公告)日：2021-05-04
申请号：US16329379
申请日：2017-08-10
摘要： There is provided a protection apparatus for protecting an electrical network. The protection apparatus comprises: at least one protection device configured to protect the electrical network from a fault in response to a or a respective protection criterion being met; and a controller configured to: receive real-time information on a change in topological structure of the electrical network; perform an online determination of the real-time impedance or admittance matrix of the electrical network based on the change in topological structure of the electrical network; and adapt the or each protection criterion based on the real-time impedance or admittance matrix.
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公开(公告)号：US10978866B2
公开(公告)日：2021-04-13
申请号：US16453747
申请日：2019-06-26
摘要： Polarizing signals for electric power system directional overcurrent and distance protection are disclosed herein. The polarizing signal may be determined using a power system tracking signal, generated using a synchronous reference frame to track to a pre-fault voltage, and maintained using a phase-locked loop. The power system tracking signal may be used for a time after a voltage signal is lost, after which a self-polarizing signal may be used. Where voltage signals are not available, a current may be used to generate the polarizing signal.
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公开(公告)号：US10965120B2
公开(公告)日：2021-03-30
申请号：US15094382
申请日：2016-04-08
发明人： Robert Illing , Christian Djelassi
IPC分类号： H02H3/00 , H02H9/02 , H02H3/093 , G01R19/165 , G01R31/327 , H02H3/04 , H02H7/20
摘要： An embodiment electronic circuit includes an electronic switch comprising a load path, and a control circuit configured to drive the electronic switch and configured to operate in one of a first operation mode and a test mode. The control circuit comprises a test mode input and is configured to operate in the test mode based on a test signal received at the test mode input. The control circuit in the first operation mode is configured to generate a first protection signal based on a current-time-characteristic of a load current of the electronic switch and drive the electronic switch based on the first protection signal.
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公开(公告)号：US20210091557A1
公开(公告)日：2021-03-25
申请号：US17017036
申请日：2020-09-10
申请人： S&C Electric Company
摘要： A control system and method for sectionalizing switches and pulse-testing interrupter/reclosers in a distribution grid feeder which enables fault location, isolation and service restoration without requiring an external communications infrastructure to pass information between the switches. The method includes switches entering an armed state when they experience a high fault current during an initial fault event. Then, when the interrupter/recloser runs its test pulse sequence, any armed switch counts all test pulses as fault pulses, while non-armed switches count the test pulses as load pulses. Switches open to isolate the fault based on threshold values of fault pulse count and load pulse count. When an initially active interrupter/recloser completes its test pulse sequence, another interrupter/recloser begins its sequence, and all switches reconfigure their threshold values based on the new interrupter/recloser. Interrupter/reclosers after the initial device use a fast close-open event if necessary to arm some switches for proper fault-count opening.
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公开(公告)号：US10939528B2
公开(公告)日：2021-03-02
申请号：US16566768
申请日：2019-09-10
摘要： An electronic circuit and a method are disclosed. The electronic circuit includes an LED circuit, wherein the LED circuit (1) includes: an input (11, 12) configured to receive an input voltage (VIN); a drive circuit (2A) connected to the input (11, 12); and an LED module (3A) connected to the drive circuit (2A) and comprising an LED string (41) with at least one LED. The drive circuit (2A) is configured to monitor the LED module (3A) for the occurrence of an LED short in the LED string (41) and to change from a normal mode to a defect mode upon detection of the LED short, and the drive circuit (2A) is configured, in the defect mode, to operate the LED string (41) in at least one defect cycle that includes deactivating the LED string (41) for a deactivation period, activating the LED string for an activation period, and checking for the persistence of the LED short in the activation period.
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公开(公告)号：US10938201B2
公开(公告)日：2021-03-02
申请号：US15967953
申请日：2018-05-01
发明人： Patrick Oms
IPC分类号： H02H3/00 , H02H3/20 , H03K5/24 , B64D45/00 , H02H1/00 , H02H3/17 , G01R31/50 , B64D45/02 , H02H7/22
摘要： An electrical link (8) between a DC high-voltage power source (2) and a user apparatus (5) including: an electrical conductor (4) surrounded by an insulating cover (4a), and an electrical protection device (3) that includes a conductive sleeve (7) arranged around the insulating cover (4a), a current generator (10) connected to a current injection point (30) of the conductive sleeve (7), a circuit breaker (9) arranged on the conductor and configured to cut off a current transiting through the conductor (4), and a detection module (11) connected to a current tap-off point (31) of the conductive sleeve (7) and to the circuit breaker (9) and configured to detect a current leak out of the conductor (4) and command the circuit breaker (9).
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公开(公告)号：US10926642B2
公开(公告)日：2021-02-23
申请号：US16255294
申请日：2019-01-23
发明人： Tomokazu Masuda
摘要： An electric vehicle includes an electrical storage device, a charging device that charges the electrical storage device when connected to the external power supply device, a ground fault detection device including a ground fault detection circuit and configured to detect a ground fault while the electrical storage device is being charged, and a controller that carries out communication with the external power supply device and carries out communication with the ground fault detection device. The controller acquires a common-mode noise margin of the external power supply device and transmits a ground fault detection time based on the common-mode noise margin to the ground fault detection device. The ground fault detection device detects a ground fault when the ground fault detection time has elapsed from when the ground fault detection circuit is set to a state where a ground fault is detectable.
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公开(公告)号：US10922950B2
公开(公告)日：2021-02-16
申请号：US13655702
申请日：2012-10-19
发明人： Didier Severac , Shu Xing Hong
摘要： A relay with an intermediate alert mechanism and a method for producing an intermediate alert in association with a relay. The relay comprises an input sampling module configured to detect a parameter of a source to be monitored; a processing module configured to determine a working range based on a threshold level and a working condition, and the processing module further configured to automatically determine at least one intermediate level within the working range based on the threshold level. The processing module causes the transmission of an intermediate trigger signal when the detected value of the parameter reaches the intermediate level.
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公开(公告)号：US10910814B2
公开(公告)日：2021-02-02
申请号：US15980006
申请日：2018-05-15
申请人： Hubbell Incorporated
摘要： A receptacle including an electronic processor configured to receive information from an external load and determine, from the information, an operation profile of the external load. The electronic processor analyzes a present operation of the external load and discontinues power to the external load when a present operation of the external load differs from the operational profile.
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公开(公告)号：US10903644B2
公开(公告)日：2021-01-26
申请号：US16278384
申请日：2019-02-18
申请人： AutoNetworks Technologies, Ltd. , Sumitomo Wiring Systems, Ltd. , Sumitomo Electric Industries, Ltd.
IPC分类号： H02H3/00 , H02H9/08 , H02H3/16 , H03K17/0812 , H03K17/687 , H03K17/06
摘要： Provided is a control device that stops the power supply when the first FET is short-circuited. In the control device, a boost circuit increases the voltage of one end of a resistor on the boost circuit side to a predetermined voltage that is higher than the source voltage of the first FET. An AND circuit instructs the discharge circuit to decrease the voltage at the other end of the resistor when the voltage at the other end of the resistor is less than a threshold voltage if the AND circuit instructs the boost circuit to increase the voltage at the one end of the resistor on the boost circuit side. The threshold voltage exceeds the voltage at the one end of the resistor if the voltage at the one end of the resistor on the boost circuit is the predetermined voltage and if the first FET is short-circuited.
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