公开(公告)号：US11901726B2

公开(公告)日：2024-02-13

申请号：US17489935

申请日：2021-09-30

Applicant: S&C Electric Company

Inventor： Michael Quinlan ,  Boris Marendic ,  Yoav Sharon

IPC: H02H7/26 ,  H02J13/00 ,  G05B19/042 ,  H02J3/00 ,  H02J3/38 ,  H02J3/46

CPC classification number: H02H7/26 ,  G05B19/042 ,  H02J3/0012 ,  H02J3/381 ,  H02J3/388 ,  H02J3/46 ,  H02J3/472 ,  H02J13/00002 ,  H02J13/00034 ,  G05B2219/2639

Abstract: 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.

公开(公告)号：US11563318B2

公开(公告)日：2023-01-24

申请号：US17400398

申请日：2021-08-12

Applicant: S&C Electric Company

Inventor： Alejandro Montenegro ,  Michael R Maroney ,  Nicholas Seng ,  Daniel Desmond ,  Goran Djogo ,  Thomas J Dyer ,  Joseph W Milton ,  Michael Quinlan

IPC: 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

Abstract: 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.

公开(公告)号：US20220268826A1

公开(公告)日：2022-08-25

申请号：US17677890

申请日：2022-02-22

Applicant: S&C Electric Company

Inventor： Qing Guo ,  Michael Quinlan ,  Yoav Sharon ,  Boris Marendic

IPC: G01R31/08 ,  G01R19/25

Abstract: 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.

公开(公告)号：US20220103010A1

公开(公告)日：2022-03-31

申请号：US17400410

申请日：2021-08-12

Applicant: S&C Electric Company

Inventor： Michael Quinlan ,  John Seuss ,  Alejandro Montenegro ,  Daniel Desmond ,  John French

IPC: H02J13/00 ,  H02J3/00

Abstract: 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.

公开(公告)号：US20210036508A1

公开(公告)日：2021-02-04

申请号：US16786864

申请日：2020-02-10

Applicant: S&C Electric Company

Inventor： Michael Quinlan ,  Alejandro Montenegro ,  Yoav Sharon

IPC: H02H7/26 ,  H02H1/00 ,  G05B19/042 ,  H02J13/00

Abstract: 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.

公开(公告)号：US11874309B2

公开(公告)日：2024-01-16

申请号：US17943604

申请日：2022-09-13

Applicant: S&C Electric Company

Inventor： Michael John Meisinger, Sr. ,  Peter S. Curtiss ,  Yoav Sharon ,  Michael Quinlan

IPC: G01R25/00 ,  G01R35/00 ,  G01R15/16 ,  G01R15/18

CPC classification number: G01R25/00 ,  G01R15/16 ,  G01R15/181 ,  G01R35/005

Abstract: 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.

公开(公告)号：US11569652B2

公开(公告)日：2023-01-31

申请号：US17400404

申请日：2021-08-12

Applicant: S&C Electric Company

Inventor： Daniel Desmond ,  John French ,  Konstantin Lakirovich ,  Michael Quinlan ,  Alejandro Montenegro ,  David G Porter ,  Joseph W Milton ,  Thomas J Dyer

IPC: 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

Abstract: 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.

公开(公告)号：US20220109302A1

公开(公告)日：2022-04-07

申请号：US17489921

申请日：2021-09-30

Applicant: S&C Electric Company

Inventor： Michael Quinlan ,  Daniel Desmond ,  Yoav Sharon

IPC: H02J3/38 ,  H02J3/46 ,  H02J13/00

Abstract: 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.

公开(公告)号：US20200287384A1

公开(公告)日：2020-09-10

申请号：US16551814

申请日：2019-08-27

Applicant: S&C Electric Company

Inventor： Michael Quinlan

IPC: H02J3/00 ,  H02J3/38 ,  G01R22/10 ,  G05B17/02 ,  G01J1/44

Abstract: 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.

公开(公告)号：US20230400488A1

公开(公告)日：2023-12-14

申请号：US18316327

申请日：2023-05-12

Applicant: S&C Electric Company

Inventor： Michael Quinlan ,  Yoav Sharon

IPC: G01R25/00

CPC classification number: G01R25/00

Abstract: A system and method for generating phasors having a phase angle and magnitude from a sinusoidal power signal, and using the phasors to generate a frequency and RoCoF of the power signal. The system and method provide improvements over known systems and methods by correcting the frequency of sensor signals, providing a simplified phasor correction equation, reducing errors in a non-recursive DFT algorithm, improving frequency estimation by spacing out DFTs, correcting the sampling rate, providing linear interpolation of frequency and/or providing a variable DFT window length.