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公开(公告)号：US20230138879A1
公开(公告)日：2023-05-04
申请号：US17960264
申请日：2022-10-05
摘要： A network protector includes: a first resettable switching apparatus configured to control an electrical connection between a distribution transformer and a first electrical feeder of a secondary electrical distribution network; a first communications interface; and a first controller configured to: determine a direction of power flow in the first electrical feeder; cause the first communications interface to provide a first indication of the direction of power flow in the first electrical feeder to a second network protector; and receive a second indication from the second network protector. The second indication includes an indication of the direction of power flow in a second electrical feeder of the secondary electrical distribution network.
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公开(公告)号：US11621553B2
公开(公告)日：2023-04-04
申请号：US17313370
申请日：2021-05-06
发明人： Ulrich Schmidt , Kai Leingruber , Georg Willmann , Christian Aigner , Paul Bange , Philipp Schmachtenberger
摘要： An electrical assembly (100) having a first ground connection (145), a second ground connection (155), and a supply connection (135). The electrical assembly is designed for connecting with an electrical voltage between the supply connection (135) and at least one of the ground connections (145, 155). The assembly (100) includes a first electrical consumer (110) which is connected to the supply connection (135) and the first ground connection (145). A component (120) connects the second ground connection (155) to the first consumer (110). The component (120) is designed to produce a predetermined voltage drop.
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公开(公告)号：US20230062817A1
公开(公告)日：2023-03-02
申请号：US17806319
申请日：2022-06-10
摘要： Systems and methods are described herein to accommodate different settings associated with a converter-based electric power generator and an inverter-based electric power generator for electric power generation within an electric power delivery system. The electric power delivery system may provide electric power generated by a bulk electric system to the loads via distributed substations using a first operating frequency. Moreover, the distributed substations may include inverter-based electric power generators to supply the electric power demand of downstream loads in an islanded configuration. That said, the inverter-based electric power generators may supply the electric power using a second frequency that is higher than the first frequency. Protective systems, positioned downstream from the distributed substations, may use different settings associated with the bulk electric system or the inverter-based electric power generators based on detecting the frequency of the supplied electric power.
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公开(公告)号：US11575248B2
公开(公告)日：2023-02-07
申请号：US16731264
申请日：2019-12-31
申请人： ABB Schweiz AG
发明人： Taosha Jiang , Carlos David Nieto , Debrup Das , Daniel Turk
摘要： A prefabricated substation is provided with a solid state breaker and a transformer. The substation preferably transforms voltage from a medium voltage to a low voltage. The substation also breaks current flow through the substation when a fault occurs. The primary components of the substation, including the transformer and solid state breaker, are located together within the housing.
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公开(公告)号：US20230026059A1
公开(公告)日：2023-01-26
申请号：US17785172
申请日：2020-12-17
申请人： Rohm Co., Ltd.
发明人： Toru TAKUMA
IPC分类号： H02H7/22
摘要： For example, an overcurrent protection circuit 71 includes a hiccup controller 71b which, when an output current To passing through a switching element 10 goes into an overcurrent state, hiccup-drives the switching element 10 such that predetermined on-period ton and off-period toff alternate. For example, the hiccup controller 71b may control at least one of the on- and off-period ton and toff according to a temperature sense signal S71c. For example, the temperature sense signal S71c may be generated by detecting at least one of temperature Tj of the switching element 10 and a difference in temperature ΔTj between the switching element 10 and another element. For example, when at least one of temperature Tj and the difference in temperature ΔTj is higher than a predetermined threshold value, the hiccup controller 71b may conduct at least one of reduction of the on-period ton and increase of the off-period toff.
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公开(公告)号：US11549583B2
公开(公告)日：2023-01-10
申请号：US16812616
申请日：2020-03-09
申请人： DENSO CORPORATION
发明人： Masashi Nakagawa , Fuminori Suzuki , Kengo Takei
IPC分类号： H01H9/00 , H01H47/00 , H01H51/22 , H01H51/30 , F16H61/02 , G01R19/00 , H02H3/08 , H02H3/26 , H02H7/22
摘要： A current control device brings, after a target current has been changed to an upper side, a solenoid into a full-on state at a first timing that arrives in a predetermined control transition cycle shorter than an on-off cycle, determines whether an excitation current has become equal to or larger than a full-on threshold larger than the target current, brings the solenoid into a full-off state at a first timing that arrives in a predetermined energization switching cycle shorter than the on-off cycle after the excitation current has become equal to or larger than the full-on threshold, determines whether the excitation current has become equal to or smaller than a full-off threshold smaller than the target current, and causes a transition to a steady control at a first timing that arrives in the control transition cycle after the excitation current has become equal to or smaller than the full-off threshold.
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公开(公告)号：US20220376481A1
公开(公告)日：2022-11-24
申请号：US17742476
申请日：2022-05-12
发明人： Vladislav Kraynov
IPC分类号： H02B11/133 , H02B13/025 , H02H7/22
摘要： A method for monitoring switchgear, provided with a switching mechanism, including: monitoring an electric power supply signal to an electromagnetic actuator of the switching mechanism in order to detect the start of the supply of electric power to the actuator, monitoring an impact intensity measurement in the switchgear in order to detect the setting in motion of the switching mechanism, monitoring a parameter representative of the open or closed state of the switchgear in order to detect a change in state of the parameter, representative of an end of an opening or closing sequence of the switchgear. The method further includes: calculating a time TACT that has elapsed between the detection of the start of the supply of electric power to the actuator and the detection of the setting in motion of the switching mechanism of the switchgear, calculating a time TM that has elapsed between the setting in motion of the switching mechanism and the sequence end.
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8.发明授权公开(公告)号：US11472357B2
公开(公告)日：2022-10-18
申请号：US16824539
申请日：2020-03-19
发明人： Bernhard Schraud
摘要： A wiring system for a vehicle is specified, which has a voltage source and an electrical load, whereby a need for the electrical load depends on an external condition. Furthermore, the wiring system has a load path with an electrical line, which connects the voltage source to the electrical load, and a first switching element, which is arranged in the load path, for disconnecting the electrical load from the voltage source, wherein a working range of the external condition is defined, within which the function of the electrical load is reasonable, and a control unit is arranged, which is designed in such a way that a switching on of the electrical load is prevented if the external condition lies outside the working range. Furthermore, a method for the design of an electrical line of such a wiring system is given.
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公开(公告)号：US11469589B2
公开(公告)日：2022-10-11
申请号：US16956348
申请日：2017-12-20
发明人： YouYi Li , Kai Liu , Jianping Wang
摘要： An arrangement and method for zero sequence differential protection of a transmission line of a power system are disclosed. A zero sequence differential protection unit is configured to detect an internal fault of the transmission line using current measurements of each phase A, B, C of the transmission line. The zero sequence differential protection unit is configured to initiate a trip when an internal fault is detected. A phase selection unit is configured to determine whether or not any of the phases A, B, C of the transmission line is faulty using a comparison of differential values of the current measurements for each phase. The phase selection unit is configured to, based on the initiation of the trip, determine which of the phases A, B, C is faulty and to finalize the trip for any faulty phase.
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公开(公告)号：US11456594B2
公开(公告)日：2022-09-27
申请号：US17265027
申请日：2019-01-28
发明人： Kenichi Fukuno
摘要： In the conventional elimination of a short-circuited point by using fuses, due to the fuse characteristics, it is not possible to ensure cooperation at the respective melting times of fuses in a short-circuit state. To solve such a problem, provided are a converter which limits a current passing through a distribution line in a short-circuit state and has a constant power drooping characteristic of passing a current greater than or equal to a rated current through the distribution line for a fixed time, and relays which have an operating characteristic of detecting a current greater than or equal to the rated current and hierarchically opening switches within the fixed time.
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