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1.发明申请公开(公告)号：US20220271534A1
公开(公告)日：2022-08-25
申请号：US17677889
申请日：2022-02-22
申请人： S&C Electric Company
发明人： Qing Guo , Michael Quinlan , Yoav Sharon
摘要： A system and method for disseminating information and data throughout a power distribution network. A timer is set in each of the network endpoint switching devices that expire at the same time. A message is sent from each endpoint device to its neighbor switching device(s) when the timer expires that includes data about the endpoint switching device, and the message is received from the endpoint switching device at a receiving side of the neighbor switching devices. A message is sent from the neighbor switching devices to their neighbor switching devices at a sending side of the neighbor switching devices that includes data about the endpoint switching device and the neighbor switching device of the endpoint switching device. The messages are continually sent through the switching devices in this manner until all of the switching devices have the data about all of the other switching devices in a division or feeder.
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公开(公告)号：US20220102973A1
公开(公告)日：2022-03-31
申请号：US17400412
申请日：2021-08-12
申请人： S&C Electric Company
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：US11128127B2
公开(公告)日：2021-09-21
申请号：US16580404
申请日：2019-09-24
申请人： S&C Electric Company
发明人： Michael Quinlan
摘要： A control system and method for a feeder, or portion of the distribution grid, which enables fault location, isolation and service restoration without communications between the feeder switches. The method uses definite time coordination between feeder switches and local measurements to determine which switches should open or close in order to isolate the fault and restore service downstream of a faulted section. Time-current characteristics and feeder topology are shared with all switches in the feeder prior to a fault event. When a disturbance occurs, a timer is started at each switch. When a switch measures voltage loss in all three phases, it stops its timer. Each switch evaluates the timer values and, when a particular switch determines based on the time-current characteristics that the immediate upstream switch opened to isolate the fault, that particular switch also opens. Power upstream of the particular switch is then provided by an alternative source.
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4.发明授权公开(公告)号：US11569652B2
公开(公告)日：2023-01-31
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
IPC分类号： H02H3/00 , H02H7/00 , H02H3/06 , H02J3/00 , H02H7/26 , H02J13/00 , H02H3/08 , H02J50/00 , H01H33/53 , H01H33/66 , H02H1/00 , H02H7/04 , G01R31/08 , H02H3/04
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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公开(公告)号：US20220109302A1
公开(公告)日：2022-04-07
申请号：US17489921
申请日：2021-09-30
申请人： S&C Electric Company
发明人： Michael Quinlan , Daniel Desmond , Yoav Sharon
摘要： A system and method for restoring power in a closed-loop 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 performs a radial restoration process for restoring power and then determines that at least one of the sections is not receiving power after the radial restoration process has been performed. The method estimates power flow through each switching device and determines an available power capacity from each switching device. The method then determines if the unpowered sections can be powered by any of their neighbor and non-neighbor devices. The method virtually closes the switching devices to power the unpowered sections and updates the estimation of power flow through each switching device and determination of available power capacity from each switching device.
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公开(公告)号：US20200287384A1
公开(公告)日：2020-09-10
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：US11563318B2
公开(公告)日：2023-01-24
申请号：US17400398
申请日：2021-08-12
申请人： S&C Electric Company
发明人： Alejandro Montenegro , Michael R Maroney , Nicholas Seng , Daniel Desmond , Goran Djogo , Thomas J Dyer , Joseph W Milton , Michael Quinlan
IPC分类号： H02H3/00 , H02H7/00 , H02H3/06 , H02J3/00 , H02H7/26 , H02J13/00 , H02H3/08 , H02J50/00 , H01H33/53 , H01H33/66 , H02H1/00 , H02H7/04 , G01R31/08 , H02H3/04
摘要： A switching device that is part of a transformer in an underground residential power distribution circuit and provides fault isolation and restoration. The switching device includes a transformer interface for coupling the device to the transformer and a connector interface for coupling the device to a connector. The device also includes a vacuum interrupter having a fixed terminal and a movable terminal, where the fixed terminal is electrically coupled to the connector interface and the movable terminal is electrically coupled to the transformer interface. A control rod is coupled to the movable terminal, an actuator assembly is coupled to the control rod and is operable to move the control rod to open and close the vacuum interrupter. A capacitor is electrically coupled to the fixed terminal, and provides an interface for power line communications signals, voltage sensing, help determine power flow direction and help determine the distance to a fault.
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公开(公告)号：US20220268826A1
公开(公告)日：2022-08-25
申请号：US17677890
申请日：2022-02-22
申请人： S&C Electric Company
发明人： Qing Guo , Michael Quinlan , Yoav Sharon , Boris Marendic
摘要： A system and method for determining loads throughout a power distribution network having a plurality of switching devices provided along a feeder. The method includes measuring the current and/or voltage on one or both sides of the switching devices and calculating a power flowing through each of the switching devices and a load in each section using the current and/or voltage measurements at predetermined sample times. The method further includes storing a plurality of recorded current/voltage measurements or calculated powers flowing through each device for consecutive sample times. The method then determines a median load from the measurements and power flows and calculates a load in each of network sections.
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公开(公告)号：US20220103010A1
公开(公告)日：2022-03-31
申请号：US17400410
申请日：2021-08-12
申请人： S&C Electric Company
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 end switch connected to one end of the power line and a second end switch connected to an opposite end of the power line, where each transformer includes an upstream switching device and a downstream switching device, and where source power is provided to both ends of the power line through the first and second end switches and one of the switching devices is a normally open switching device. The method includes detecting overcurrent in the network from the fault, opening certain ones of the switching devices in response thereto, detecting loss of voltage as a result of the open switching devices and opening or closing certain ones of the switching devices to isolate the fault.
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公开(公告)号：US20210036508A1
公开(公告)日：2021-02-04
申请号：US16786864
申请日：2020-02-10
申请人： S&C Electric Company
IPC分类号： H02H7/26 , H02H1/00 , G05B19/042 , H02J13/00
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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