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11.发明申请公开(公告)号：US20230132216A1
公开(公告)日：2023-04-27
申请号：US17943604
申请日：2022-09-13
申请人： S&C Electric Company
摘要： A switching device for controlling power flow on a power line. The device includes a current sensor for measuring primary current on the line, a first voltage sensor for measuring primary voltage on the line at one side of the switching device, and a second voltage sensor for measuring primary voltage on the line at another side of the switching device. An ADC converts measurement signals from the current sensor and the voltage sensors to digital signals, and a PMU calculates magnitude and phase angle synchrophasor data using the current and voltage measurement digital signals and calibration data.
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公开(公告)号：US11616358B2
公开(公告)日：2023-03-28
申请号：US17499548
申请日：2021-10-12
申请人： S&C Electric Company
发明人： Boris Marendic , Michael Quinlan , Yoav Sharon
IPC分类号： H02H7/26 , H02H1/00 , G01R19/10 , G01R31/08 , G01R19/165
摘要： A system and method for fault location and isolation in an electrical power distribution network, where the network includes a plurality of switching devices provided along a feeder. The method includes detecting an overcurrent event in the network from the fault and interrupting the overcurrent event by opening and then immediately locking out or subsequently reclosing and testing the fault. A count value is increased in each switching device that detected the overcurrent event. A count and current (C&I) message is sent from each of the switching devices that detected the overcurrent event and then detected the loss of voltage upstream to an upstream neighbor switching device. Current measurements in the C&I messages, measured current by the devices and the counts values in the devices determine what devices are opened to isolate the fault.
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公开(公告)号：US20220181871A1
公开(公告)日：2022-06-09
申请号：US17499548
申请日：2021-10-12
申请人： S&C Electric Company
发明人： Boris Marendic , Michael Quinlan , Yoav Sharon
IPC分类号： H02H7/26 , H02H1/00 , G01R31/08 , G01R19/165 , G01R19/10
摘要： A system and method for fault location and isolation in an electrical power distribution network, where the network includes a plurality of switching devices provided along a feeder. The method includes detecting an overcurrent event in the network from the fault and interrupting the overcurrent event by opening and then immediately locking out or subsequently reclosing and testing the fault. A count value is increased in each switching device that detected the overcurrent event. A count and current (C&I) message is sent from each of the switching devices that detected the overcurrent event and then detected the loss of voltage upstream to an upstream neighbor switching device. Current measurements in the C&I messages, measured current by the devices and the counts values in the devices determine what devices are opened to isolate the fault.
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公开(公告)号：US20220109295A1
公开(公告)日：2022-04-07
申请号：US17489935
申请日：2021-09-30
申请人： S&C Electric Company
发明人： Michael Quinlan , Boris Marendic , Yoav Sharon
IPC分类号： H02H7/26 , H02J13/00 , H02J3/00 , G05B19/042
摘要： A system and method for controlling an operation of devices in a power distribution network. The method determines that there is a power loss in the network as a result of a fault and one or more teams is not receiving power and performs a switching process in switching devices to prevent fault current from flowing to the fault. The method initiates a power restoration process to control the open and closed status of switching devices to isolate the fault and performs the power restoration process by the leader device in a division that the fault is occurring that includes opening and closing switching devices so that power is provided to all of the teams except the team that the fault is in. The method reconfigures the divisions based on which switching devices are now open and selects new leader devices based on the reconfiguration of the divisions.
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公开(公告)号：US11101653B2
公开(公告)日：2021-08-24
申请号：US16551814
申请日：2019-08-27
申请人： S&C Electric Company
发明人： Michael Quinlan
摘要： A method for estimating an amount of solar generation capacity on a portion of the electrical grid such as a feeder. The method calculates maximum irradiance conditions for the feeder's geographic location and the time of year, and also records actual changes in electrical load measured periodically at a source over a time span such as a month. An additional analysis of active power against reactive power on the feeder is used to identify changes in load which were driven by real consumption versus those driven by changes in solar generation. A comparison of the actual changes in electrical load due to solar generation variation to the maximum irradiance curve yields a scaling factor and provides an estimate of the solar generation capacity on the feeder.
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公开(公告)号：US11611210B2
公开(公告)日：2023-03-21
申请号：US16786864
申请日：2020-02-10
申请人： S&C Electric Company
IPC分类号： H02J13/00 , G05B19/042 , H02H7/26 , H02H1/00
摘要： A control system and method for a group of interconnected feeders which enables fault location, isolation and service restoration without requiring each switch to have topology knowledge of devices in adjacent feeders. The method defines, for each switch, connectivity and X/Y directional information about its neighboring switches and propagates this information throughout each feeder. A leader device is also determined for each feeder. Information about topology of adjacent feeders is not needed by all devices. Only normally-open tie switches which define a boundary between two adjacent feeders have knowledge of the devices in both feeders. Switches which open during fault isolation automatically find open tie switches in a direction opposite the fault, and request service restoration downstream of the fault by providing power from an adjacent feeder. Leader devices ensure an overload condition is not created before initiating opening and closing operations of switches downstream of the fault.
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公开(公告)号：US20230011724A1
公开(公告)日：2023-01-12
申请号：US17853969
申请日：2022-06-30
申请人： S&C Electric Company
发明人： Nicholas Seng , Alejandro Montenegro , John French , Thomas S. Kelley , Keith W. Benson , Robert E. Sroka , Michael Quinlan , Gabrielle Madden
IPC分类号： H01F7/16
摘要： An actuator assembly including a first actuator having a first magnetically actuated plunger and a first latching plate, where the first plunger is operable to be magnetically latched to the first latching plate. The actuator assembly further includes a second actuator coupled to and axially aligned with the first actuator. The second actuator includes a second magnetically actuated plunger, a second latching plate, a sleeve positioned within and extending from the second plunger and being rigidly secured to the first plunger, and a tolerance spring wrapped around the sleeve. The second plunger is operable to be magnetically latched to the second latching plate, where latching of the second plunger causes the tolerance spring to compress and provide additional latching force of the first plunger to the first latching plate.
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公开(公告)号：US11552466B2
公开(公告)日：2023-01-10
申请号：US17400412
申请日：2021-08-12
申请人： S&C Electric Company
IPC分类号： H02H1/00 , H02H3/06 , H02J3/00 , H02H7/26 , H02J13/00 , H02H3/08 , H02J50/00 , H01H33/53 , H01H33/66 , H02H7/04 , G01R31/08 , H01F38/00 , H02H3/04
摘要： A method for isolating a fault in an underground power distribution network. The network includes a power line, a plurality of transformers electrically coupled to and positioned along the power line, a first recloser connected to one end of the power line and a second recloser connected to an opposite end of the power line, where each transformer includes an upstream switching device and a downstream switching device, and where power is provided to both ends of the power line through the first and second reclosers and one of the switching devices is a normally open switching device. The method includes detecting overcurrent by some of the switching devices, detecting loss of voltage by some of the switching devices and sending clear to close messages to some of the switching devices to open and close certain ones of the switching devices to isolate the fault.
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公开(公告)号：US20220109301A1
公开(公告)日：2022-04-07
申请号：US17489909
申请日：2021-09-30
申请人： S&C Electric Company
发明人： Michael Quinlan
摘要： A system and method for restoring power in a power distribution network. The network includes at least two power sources, at least one feeder and a plurality of switching devices positioned along the at least one feeder and being in communications with each other. The method determines that one or more of network sections is not receiving power, and determining a plurality of possible power restoration solutions that identify what sections each of the power sources that are available to provide power can provide power to based on a power capacity of the sources and a load requirement of the sections. The method applies predetermined selection criteria to the plurality of possible solutions to determine which of the possible solutions will be used as an actual solution, and selectively switches the switching devices between open and closed states to apply the actual solution.
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20.发明申请公开(公告)号：US20220102961A1
公开(公告)日：2022-03-31
申请号：US17400404
申请日：2021-08-12
申请人： S&C Electric Company
发明人： Daniel Desmond , John French , Konstantin Lakirovich , Michael Quinlan , Alejandro Montenegro , David G Porter , Joseph W Milton , Thomas J Dyer
摘要： A switch assembly that is part of a transformer in an underground residential power distribution circuit and that provides fault isolation and restoration. The switch assembly includes first and second switching devices each having an outer housing, a transformer interface electrically coupled to the transformer, a connector interface electrically coupled to a first connector and a first vacuum interrupter having a fixed contact and a movable contact, where the fixed contact is electrically coupled to the connector interface and the movable contact is electrically coupled to the transformer interface. A control board controls the first and second switching devices, where the control board is responsive to voltage signals from capacitors in the first and second switching devices.
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