With Communication Between Feeder Disconnect Points Patents (Class 361/64)
  • Patent number: 11128111
    Abstract: A control system and a method for mounting a control system, the control system comprising a signal-distribution board, a top-hat rail, at least a first contact device and at least a second contact device. The first contact device and the second contact device are arranged at the signal-distribution board with an offset relative to each other with the signal-distribution board electrically connecting the first contact device to the second contact device for at least transmitting data. The top-hat rail is mechanically fastened to the signal-distribution board and a first coupling module may be mechanically fastened to the top-hat rail, where the second contact device is embodied to electrically contact a signal-processing module or a second coupling module. The first contact device may be electrically connected to a field device.
    Type: Grant
    Filed: May 15, 2020
    Date of Patent: September 21, 2021
    Assignee: Beckhoff Automation GmbH
    Inventors: Torsten Budde, Lars Sommer, Michael Jost, Hans Beckhoff
  • Patent number: 11088400
    Abstract: A battery management system comprises a battery manager and battery sensors for sensing related information of each battery in a battery string. The batteries in the battery string are divided into a plurality of first groups. The battery sensors are divided into a plurality of second groups. Each second group senses the batteries in a corresponding first group, and each battery sensor senses at least one battery. Each of a part of the communication ports of the battery manager is signally connected to the battery sensors of one of the second groups. The number of the battery sensors in each second group is less than or equal to the number of battery sensors that each communication port can support. The battery manager merges the battery sensors signally connected to the part of the communication ports into one group according to a merging command, and regards the merged battery sensors as battery sensors of a same battery string accordingly.
    Type: Grant
    Filed: February 13, 2019
    Date of Patent: August 10, 2021
    Assignee: CYBER POWER SYSTEMS, INC.
    Inventors: Ta-Peng Chen, Hung-Ming Hsieh
  • Patent number: 11067617
    Abstract: A line-mounted device is used to provide power system signals to a device for detecting a fault and calculating a fault location using a traveling wave launched thereby. Current at the line-mounted device is used to separate incident and reflected traveling waves at a terminal. Times and polarities of traveling waves passing the line-mounted device and the terminal are compared to determine if the fault is located between the terminal and line-mounted device or at a location beyond the terminal or line-mounted device. Voltage of the traveling wave may be calculated using currents from the line-mounted device.
    Type: Grant
    Filed: September 26, 2019
    Date of Patent: July 20, 2021
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventors: Edmund O. Schweitzer, III, Raymond W. Rice
  • Patent number: 11054885
    Abstract: A computing device, such as a multifunction printer, may be configured to supply electrical power to one or more external devices. The computing device may include a user interface that can display information to a user, informing the user of the electrical power being supplied to the one or more external devices and/or of the total amount of electrical power that is available to the one or more external devices. The user may use the user interface to adjust the amount of power being supplied to each of the external devices, and the computing device may store information indicating the user's adjusted power levels and use the stored information to control the amount of power supplied to the external devices.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: July 6, 2021
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Yasuhiro Shimamura
  • Patent number: 11043810
    Abstract: A method for managing power quality events in an electrical system includes processing electrical measurement data from or derived from energy-related signals captured by at least one intelligent electronic device (IED) to identify at least one power quality event associated with one or more loads monitored by the at least one IED. The method also includes determining at least one means for mitigating or eliminating an impact (and/or reducing a recovery time) of the at least one identified power quality event on the electrical system based, at least in part, on an evaluation of a dynamic tolerance curve associated with one or more loads in the electrical system. The method further includes applying one or more of the at least one means for mitigating or eliminating the impact (and/or reducing the recovery time) to selected portions or zones of the electrical system.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: June 22, 2021
    Assignee: Schneider Electric USA, Inc.
    Inventors: Jon A. Bickel, Michael A. Munro
  • Patent number: 10976798
    Abstract: A building automation system (BAS) controller includes a power supply, a primary controller, and plurality of USB ports for connection to a set of supported peripherals. The primary controller identifies the inserted USB device type and, based on device type, estimates a current draw of the USB device. The total estimated current draw of all inserted USB devices is added to the current draw of the primary controller and compared to the available capacity of the power supply. If the combined current draw is above a threshold, any remaining USB ports in which no USB devices are inserted are deactivated, thereby preventing the use of further USB devices. In embodiments, the BAS controller includes an auxiliary peripheral device power interface, and the total current of connected auxiliary peripheral devices is included in the combined current determination. A user interface coupled to the BAS controller displays power allocation status.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: April 13, 2021
    Assignee: Trane International Inc.
    Inventors: Thomas Christopher Basterash, Nathan P. Longen, Christopher Garnsworthy, Mark Martin
  • Patent number: 10923907
    Abstract: Electric power Fault detection, isolation and restoration (FDIR) systems using “smart switches” that autonomously coordinate operations to minimize the number of customers affected by outages and their durations, without relying on communications with a central controller or between the smart switch points. The smart switches typically operate during the substation breaker reclose cycles while the substation breakers are open, which enables the substation breakers to reclose successfully to restore service within their normal reclosing cycles. Alternatively, the smart switch may be timed to operate before the substation breakers trip to effectively remove the substation breakers from the fault isolation process. Both approaches allow the FDIR system to be installed with minimal reconfiguration of the substation protection scheme.
    Type: Grant
    Filed: March 4, 2019
    Date of Patent: February 16, 2021
    Assignee: Southern States, LLC
    Inventors: Jiyuan Fan, Joseph R Rostron, Hua Fan, David Moore, Raj Anand, Brian Berner, Buddy Reneau
  • Patent number: 10873181
    Abstract: An electronic device having a plurality of external interfaces and capable of supplying a current to external devices connected via the external interfaces, respectively includes power supply control units corresponding to the respective external interfaces and a control unit having respective terminals for outputting a power supply control signal to the power supply control units. The control unit is configured to switch output of the power supply control signal for the power supply control unit corresponding to the selected external interface and control the power supply control signal for the power supply control units corresponding to the selected external interface to be switched off in a case where a state of the common overcurrent detection signal is changed in response to the switching of the output of the power supply control signal.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: December 22, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hiroto Tsujii
  • Patent number: 10830806
    Abstract: A method for managing power in an airplane. Power quality data and load management data are collected from airplane systems in the airplane at a variable sampling rate using data collectors assigned to the airplane systems in which the variable sampling rate increases in response to a selected trigger event. The power quality data and the load management data are received by a power monitor from the data collectors during phases of flight for the airplane. A group of load management operations for the airplane systems are performed by a load manager in the airplane during operation of the airplane. The group of load management operations is performed using the power quality data and the load management data received from the data collectors during the phases of flight for the airplane.
    Type: Grant
    Filed: October 17, 2017
    Date of Patent: November 10, 2020
    Assignee: The Boeing Company
    Inventors: Anil Kumar, Kamiar J. Karimi, Timothy M. Mitchell, Evelyn M. Matheson, Eugene V. Solodovnik
  • Patent number: 10797479
    Abstract: A method of operating an electrical power distribution system including a plurality of circuit protection devices and an additional circuit protection device communicatively coupled by a communications network is described. The method includes transmitting, by each circuit protection device of the plurality of circuit protection devices, an electrical current communication to the communication network, the electrical current communication including an indication of an electrical current detected by the transmitting circuit protection device formatted according to a network communication protocol of the communication network. The additional circuit protection device receives the electrical current communications from the plurality of circuit protection devices and determines, based on the received electrical current communications, whether a ground fault condition exists in the electrical power distribution system.
    Type: Grant
    Filed: February 22, 2017
    Date of Patent: October 6, 2020
    Assignee: ABB Schweiz AG
    Inventors: Shawn Alan Morgan, Lathom Alexander Louco, Jeffrey Marcel Kubascik, Lucas Ray Mallory, Craig Benjamin Williams
  • Patent number: 10794945
    Abstract: A method and system for detecting and locating a single-phase ground fault on a low current grounded power-distribution network, comprising: respectively testing and picking up the voltage signals and current signals at multiple positions on each phase feeder (61), and determining the corresponding transient voltage signals and transient current signals according to the extraction of the voltage signals and the current signals (62); when the change in the transient voltage signals and the transient current signals exceeds a preset threshold (63), synchronously picking up the voltage signals and current signals at multiple positions on a three-phase feeder (64); calculating corresponding zero-sequence voltages and zero-sequence currents according to the voltage signals and current signals synchronously picked up at multiple positions on the three-phase feeder (65), and then extracting the steady-state signal and transient signal of the zero-sequence voltage and zero-sequence current at each position on the thr
    Type: Grant
    Filed: December 31, 2018
    Date of Patent: October 6, 2020
    Assignee: BEIJING INHAND NETWORKS TECHNOLOGY CO., LTD.
    Inventors: Xianwu Tang, Jianliang Zhang, Jinao Li, Hongwei Zang
  • Patent number: 10635148
    Abstract: An information handling system data port system includes plural data ports that support communication of data and power transfer with external devices, such as peripherals. A power transfer manager selectively establishes direct power transfer between data ports in support of power transfer between external devices, such as one external device acting as a power source and another external device acting as a power sink. The power transfer manager establishes direct power transfer with switches that bypass the information handling system power subsystem to provide improved power transfer efficiency.
    Type: Grant
    Filed: April 7, 2016
    Date of Patent: April 28, 2020
    Assignee: Dell Products L.P.
    Inventors: Gerald R. Pelissier, Merle J. Wood, III, Lawrence E. Knepper, Karunakar P. Reddy
  • Patent number: 10534024
    Abstract: A modular monitoring and control system for NEMA-style load center smart electrical distribution panels is built up from interconnectable modules, starting with a Base Unit for monitoring and reporting on select branch circuits, then adding a Control Module for Remotely Operated breakers or additional current monitoring or both; and/or adding a separate Expansion Module with Current Transformer expansion capabilities for adding a larger number of power monitors within the load center. The modules plug into breaker pole slots within the panel for ease of installation and are independent of the breakers. The system keeps initial smart panel costs low by placing monitoring and control functionality and required parts into add-on modules.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: January 14, 2020
    Assignee: Schneider Electric USA, Inc.
    Inventors: Chad Mittelstadt, Paul Reid
  • Patent number: 10509426
    Abstract: Methods, systems and circuits for controlling the power available to the load, by reducing the power available to the load, and additionally or alternatively, limiting the current available by pre-establishing a maximum reference current. The reference current is compared to the actual or estimated current drawn by the load or part of the load. The comparison result is used to control a device or switch which disconnects the power supply or power supply regulator, whether connected directly to the load or connected via voltage dropping device, to one or more or a plurality of the load blocks when the maximum current is exceeded.
    Type: Grant
    Filed: May 2, 2018
    Date of Patent: December 17, 2019
    Assignee: ANALOG DEVICES GLOBAL UNLIMITED COMPANY
    Inventors: Sriram Ganesan, Amit Kumar Singh, Nilanjan Pal, Nitish Kuttan
  • Patent number: 10498113
    Abstract: An electrical distribution panel includes a primary breaker, an auxiliary breaker, and a resistive element that is electrically connected between the primary breaker and the auxiliary breaker. The resistive element is configured to provide a resulting signal based on a voltage drop of a signal from the primary breaker to the auxiliary breaker. A communication address of the auxiliary breaker is based on the voltage drop of the signal from the primary breaker to the auxiliary breaker. Related methods and devices are also discussed.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: December 3, 2019
    Assignee: Eaton Intelligent Power Limited
    Inventor: Jian Jiao
  • Patent number: 10476259
    Abstract: A power conversion device provided between a DC power supply and an AC electric path, including: a breaking device provided to at least one line of an output electric path in the power conversion device; a first voltage sensor provided on a primary side of the breaking device; a second voltage sensor provided on a secondary side of the breaking device; and a determination unit which calculates a primary-side voltage and a secondary-side voltage, and a primary-side phase and a secondary-side phase and determines that the breaking device is opened, by occurrence of an event in which an absolute value of a voltage difference between the primary-side voltage and the secondary-side voltage is greater than a voltage difference threshold value and an absolute value of a phase difference between the primary-side phase and the secondary-side phase is greater than a phase difference threshold value.
    Type: Grant
    Filed: March 6, 2017
    Date of Patent: November 12, 2019
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Toshiaki Okumura, Naoki Ayai, Koichi Takeshita, Fumio Urakawa, Shinjirou Shinada, Tadatsugu Udono
  • Patent number: 10277027
    Abstract: An apparatus for isolating a malfunctioning network protector from the power distribution network and for allowing the network protector to be safely reset. The apparatus includes: a 3 phase controller coupled by parallel single phase poles in plural contactors to the fuse link and adapted to receive an electric load current flowing in reverse through the network power transformer; a remote controlled switch coupled to the controller for switching the electric load current from the network protector via the controller to the network bus, with the controller then carrying the electric load current in parallel with the network protector fuse link; and visual indicators coupled to the controller for showing when the remote controlled switch has been activated to transfer the load current from the fuse links to the controller and when the electric load current has been transferred from the controller to the network bus.
    Type: Grant
    Filed: July 24, 2017
    Date of Patent: April 30, 2019
    Assignee: ELECTRICAL MATERIALS COMPANY
    Inventors: Timothy M. O'Regan, Timothy J. O'Regan
  • Patent number: 10250020
    Abstract: A method, apparatus, and system are described for a radial bus Shared Resource Distributed electrical power Distribution System, which has multiple electrical power distribution platforms and a radial power distribution bus. The multiple electrical power distribution platforms are coupled to the radial bus in an interlaced fashion to supply AC electrical power to the downstream electrical loads. The electrical loads are dual corded and are configured to nominally receive AC electrical power from two separate power distribution platforms. A first power distribution platform electrically connects to a first set of the dual corded electrical loads. Also, the first power distribution platform electrically connects to a second set of the dual corded electrical loads. A second power distribution platform electrically connects to the first set of the dual corded electrical loads, and the second power distribution platform electrically connects to a third set of the dual corded electrical loads.
    Type: Grant
    Filed: January 8, 2018
    Date of Patent: April 2, 2019
    Assignee: Rosendin Electric, Inc.
    Inventors: Steven Emert, William Paul Mazzetti, Jr.
  • Patent number: 10230310
    Abstract: Various implementations described herein are directed to a methods and apparatuses for disconnecting, by a device, elements at certain parts of an electrical system. The method may include measuring operational parameters at certain locations within the system and/or receiving messages from control devices indicating a potentially unsafe condition, disconnecting and/or short-circuiting system elements in response, and reconnection the system elements when it is safe to do so. Certain embodiments relate to methods and apparatuses for providing operational power to safety switches during different modes of system operation.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: March 12, 2019
    Assignee: Solaredge Technologies Ltd
    Inventors: Yakir Loewenstern, Ilan Yoscovich, David Braginsky, Tzachi Glovinsky, Izak Assia
  • Patent number: 10152073
    Abstract: A power distribution management apparatus includes an acquisition unit and a detection unit. The acquisition unit is configured to acquire predetermined data at a predetermined interval from meters classified into a predetermined group, the data containing power consumption. The detection unit is configured to detect, as an abnormal place, a facility of a power distribution system associated with the group when the predetermined data is not acquired within the predetermined interval from the respective meters included in the group.
    Type: Grant
    Filed: March 30, 2015
    Date of Patent: December 11, 2018
    Assignee: FUJITSU LIMITED
    Inventors: Tetsuya Kashiwagi, Yuichi Matsufuji, Sari Kawashima
  • Patent number: 10063022
    Abstract: A power distribution unit is connected to a three-phase electric power source having three phase wires with different phases, and includes a socket and a switch. The socket has a first socket terminal connected to one of the phase wires, and a second socket terminal. The switch includes a first switch terminal connected to another one of the phase wires, a second switch terminal connected to a neutral, and a third switch terminal connected to the second socket terminal. By selectively connecting the third and the first switch terminals, or connecting the third and the second switch terminals, a line-to-neutral voltage or a line-to-line voltage from the three-phase electric power source is outputted by the socket.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: August 28, 2018
    Assignee: Lite-On Technology Corp.
    Inventors: Shih-Ming Chen, Yong-Long Lee, Wen-Che Tsai, Kun-Ta Yang
  • Patent number: 9996068
    Abstract: A system is provided in which a microcontroller is connected to a household unit, which is controlled by the microcontroller. The microcontroller is connected to wireless unit, so that the household unit may be controlled wirelessly (e.g. from a smart phone, tablet computer, laptop, and/or personal computer). In an embodiment, the household unit is a circuit breaker or a bank of circuit breakers that protect various devices in the house from faults in the power lines. In an embodiment, the household unit includes a switch, such as a solenoid for turning off an electrical appliance. In an embodiment, the household unit has various settings that may be set remotely, via sending wireless signals to the microcontroller.
    Type: Grant
    Filed: February 5, 2016
    Date of Patent: June 12, 2018
    Inventors: Ramasamy Lakshmanan, Chandrasekhar Esakkimuthu Poorna
  • Patent number: 9871365
    Abstract: A protective relay system includes plural protective relay devices protecting a power system based on electrical quantity data from the power system, and a communication between the protective power devices is performed via a network. The protective relay device includes a clock unit periodically clocking a timing at which sampling is performed on an electrical quantity of the power system, a relay computing unit performing a relay computation based on the electrical quantity data having undergone the sampling and electrical quantity data received via the network, a random-number creating unit creating a random number, and a synchronization-frame processing unit setting a timing of sending a synchronization frame to another protective relay device via the network based on the random number created by the random-number creating unit.
    Type: Grant
    Filed: December 16, 2013
    Date of Patent: January 16, 2018
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Akira Kawarada, Takahiro Mori, Michihiko Inukai, Hideaki Sugiura, Tomonori Nishida
  • Patent number: 9866012
    Abstract: A system and method for reporting and control in an electrical power distribution grid including a plurality of sensor devices forming a sensor network are disclosed. Each sensor device monitors and measures attributes of line current for an associated electrical power distribution line at a selected location. Control sensor devices will have control capabilities in addition to its monitoring and measurement capabilities. The sensor devices can detect a fault in a branch of the power grid and send control and fault detected messages to an adjacent upstream sensor on a wireless network comprising a plurality of contention access and contention free time slots wherein a number of the contention free time slots is equal to or greater than a number of sensors in the plurality of sensors.
    Type: Grant
    Filed: April 30, 2015
    Date of Patent: January 9, 2018
    Assignee: MAPLE MICROSYSTEMS INC.
    Inventors: Mohamed Samy Hosny, Peter Goharis
  • Patent number: 9865998
    Abstract: A method, apparatus, and system are described for a radial bus Shared Resource Distributed electrical power Distribution System, which has multiple electrical power distribution platforms and a radial power distribution bus. The multiple electrical power distribution platforms are coupled to the radial bus in an interlaced fashion to supply AC electrical power to the downstream electrical loads. The electrical loads are dual corded and are configured to nominally receive AC electrical power from two separate power distribution platforms. A first power distribution platform electrically connects to a first set of the dual corded electrical loads. Also, the first power distribution platform electrically connects to a second set of the dual corded electrical loads. A second power distribution platform electrically connects to the first set of the dual corded electrical loads, and the second power distribution platform electrically connects to a third set of the dual corded electrical loads.
    Type: Grant
    Filed: May 14, 2015
    Date of Patent: January 9, 2018
    Assignee: Rosendin Electric, Inc
    Inventors: Steven Emert, William Paul Mazzetti, Jr.
  • Patent number: 9784773
    Abstract: According to one aspect, embodiments of the invention provide a system for monitoring a load center including a plurality of current sensors, a communication bus, a plurality of sensor circuits, a power module configured to be coupled to a load center input line and to receive input AC power from the input line, a collector, and a cable configured to be coupled between the power module and the collector, wherein the power module is further configured to provide power to the plurality of sensor circuits via the communication bus, provide power to the collector via the cable, measure at least one of voltage, frequency and phase of input AC power and provide signals related to the measured voltage, frequency or phase to the collector via the cable, receive current measurement signals from the plurality of sensor circuits and provide the received current measurement signals to the collector via the cable.
    Type: Grant
    Filed: November 6, 2013
    Date of Patent: October 10, 2017
    Assignee: SCHNEIDER ELECTRIC IT CORPORATION
    Inventors: Vishwas Mohaniraj Deokar, Namwook Paik, Jeffrey Steven Young
  • Patent number: 9703309
    Abstract: Automatic reclosing of a fault interrupting device is overridden by establishing communication with a control system for a fault interrupting device operable to open responsive to a fault on an electric distribution system and automatically reclose after a predetermined time delay, and analyzing data for the electric distribution system by an apparatus separate from the fault interrupting device control system and having higher performance than the fault interrupting device control system, to determine whether to block the automatic reclosing of the fault interrupting device before the fault interrupting device automatically recloses. An autoreclosing block command is generated by the apparatus if the apparatus determines the automatic reclosing of the fault interrupting device should be blocked. The autoreclosing block command is sent from the apparatus to the fault interrupting device control system to prevent the automatic reclosing of the fault interrupting device after the predetermined time delay.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: July 11, 2017
    Assignee: ABB Schweiz AG
    Inventors: Dmitry Ishchenko, Mirrasoul J. Mousavi
  • Patent number: 9692258
    Abstract: A method of classifying an event in an electrical grid. The method utilizes event related data provided by intelligent electronic devices and provides the operator with a single conclusion classifying the event, thereby helping the operator to determine the mitigation actions. The method includes receiving individual event related data from each intelligent electronic device, and determining whether the event is a fault or a non-fault based on probabilistic methods applied to the event related data. A corresponding system is also presented herein.
    Type: Grant
    Filed: December 6, 2013
    Date of Patent: June 27, 2017
    Assignee: ABB Research Ltd.
    Inventors: Kari Saarinen, Mirrasoul Mousavi
  • Patent number: 9692224
    Abstract: Power distribution systems and methods are described. In one example, a method of testing a power distribution system including a first circuit protection device and a second circuit protection device coupled to the first circuit protection device downstream of the first circuit protection device is described. The method includes monitoring a status of a communicative connection between a ZSI output port of the first circuit protection device and a ZSI input port of the second circuit protection device with a ZSI monitor of the first circuit protection device, detecting whether the ZSI output port of the first circuit protection device is coupled to the ZSI input port of the second circuit protection device, and indicating the status of the communicative connection.
    Type: Grant
    Filed: June 15, 2015
    Date of Patent: June 27, 2017
    Assignee: General Electric Company
    Inventors: Lathom Alexander Louco, John James Dougherty, Craig Benjamin Williams
  • Patent number: 9627118
    Abstract: A gapped core leg for a shunt reactor, comprising magnetic core elements separated by spacers cast directly between the core elements. Accordingly, a rigid core leg construction is achieved.
    Type: Grant
    Filed: July 20, 2011
    Date of Patent: April 18, 2017
    Assignee: ABB Research Ltd.
    Inventors: Jan Anger, Julia Forslin, Uno Gafvert
  • Patent number: 9618950
    Abstract: According to an embodiment, the invention provides a voltage control system for medium voltage applications. The voltage control system provides a booster-transformer and a feeder-transformer, each of the booster-transformer and the feeder-transformer having a respective primary winding and a secondary winding, wherein the secondary winding of the feeder-transformer is electrically connected with the primary winding of the booster-transformer by an intermediate circuit. The voltage control system also includes a connection device configured to connect the secondary winding of the booster transformer with an electrical energy supply network in order that the secondary winding of the booster transformer is connected in series with a transmission line having a voltage that is to be controlled.
    Type: Grant
    Filed: September 15, 2015
    Date of Patent: April 11, 2017
    Assignee: ABB SCHWEIZ AG
    Inventors: Martin Carlen, Irma Buschmann, Frank Cornelius, Jens Tepper, Benjamin Weber, Yong Wang
  • Patent number: 9595825
    Abstract: A smart circuit breaker is provided. An electronic device can be electrically positioned between a utility and an electrical power outlet, electrical subpanel, load center, transformer, or other power distribution center. The electronic device can include a circuit breaker associated with an electrical power circuit, a communications device, a monitoring device and an electronic circuit. The electronic circuit can be operable with the circuit breaker, the communications device and the monitoring device to determine an account of a user of the electrical power circuit and to determine from the account whether to supply power to the electrical power circuit. Further, the electronic circuit can be operable with the circuit breaker, the communications device and the monitoring device to, if power is supplied to the electrical power circuit, charge the account and activate the circuit breaker if the monitoring device detects an undesirable power condition.
    Type: Grant
    Filed: January 9, 2008
    Date of Patent: March 14, 2017
    Assignee: POWER MONITORS, INC.
    Inventor: Walter Curt
  • Patent number: 9584007
    Abstract: Embodiments of the present invention disclose a current source converter differential protection method, including: sampling, by a relay protection device, secondary side currents of current transformers on two sides of a protected current source converter, to obtain incomer-side three-phase currents, and outgoer-side three-phase currents; rectifying the incomer-side three-phase currents and the outgoer-side three-phase currents, to obtain an incomer-side input current and an outgoer-side output current which are equivalent; converting the incomer-side input current and the outgoer-side output current according to a current ratio of the current transformers on the two sides, to acquire a transient differential current and a transient restraint current; acquiring a differential current and a restraint current according to the transient differential current and the transient restraint current; and achieving differential protection according to the differential current and the restraint current.
    Type: Grant
    Filed: April 14, 2014
    Date of Patent: February 28, 2017
    Assignees: NR ELECTRIC CO., LTD., NR ENGINEERING CO., LTD.
    Inventors: Qixue Zhang, Jun Chen, Wei Yan, Xiangjian Shi, Guang Wang, Wei Yan, Weiqun Liu, Quanrong Shen
  • Patent number: 9564751
    Abstract: Circuit protection devices, power distribution systems, and circuit protection device monitoring in a zone selective interlocking (ZSI) system are described. In one example, a circuit protection device for use in a ZSI power distribution system includes a trip mechanism configured to interrupt current flowing through the circuit protection device, and a trip unit operatively coupled to the trip mechanism. The trip unit is configured to monitor current flowing through the circuit protection device, output a first signal when the monitored current is less than a threshold value, and output a second signal when the monitored current is greater than or equal to the threshold value. The first and second signals are different from each other and different than an absence of a signal.
    Type: Grant
    Filed: November 14, 2014
    Date of Patent: February 7, 2017
    Assignee: General Electric Company
    Inventors: John James Dougherty, Marcelo Esteban Valdes
  • Patent number: 9548607
    Abstract: A system and method for monitoring and controlling an electrical network includes a plurality of peripheral units installed at various nodes along the branches of the electrical network, each peripheral unit including current meters and voltage meters to measure current of a phase wire, current of the neutral wire, current of the ground wire, current difference between a phase wire and the neutral wire, voltage between a phase wire and the neutral wire and voltage between the neutral wire and the ground wire; switches connected to the phase wires and the neutral wires; and a central processing unit configured to: collect data from the meters, analyze the data to detect faults at the electrical network, and control the switches of the plurality of peripheral units, so as to disconnect faulty branches of the electrical network.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: January 17, 2017
    Inventors: Oren Meiri, Yuval Shmidov
  • Patent number: 9482709
    Abstract: A method for assigning individual phase conductors at a first point to those at at least one further point in a polyphase energy distribution network, in particular in a three-phase network. In the case of mains operation, wherein a common reference time is determined for these points, and the time difference and/or phase difference of the phase voltage or the line-to-line voltage between the reference time of a zero crossing of the phase voltage are determined for these points. By a comparison of the time and/or phase differences at two different points the phase conductor of one point is assigned to a phase conductor of the further point which has the same to time and/or phase difference with respect to the common reference time. An additional loading of the energy supply network or an interruption of the mains operation is avoided by the method.
    Type: Grant
    Filed: May 22, 2012
    Date of Patent: November 1, 2016
    Assignee: Siemens Aktiengesellschaft
    Inventors: Jaroslaw Kussyk, Johann Lichtnekert, Richard Pitz, Wolfgang Salmutter
  • Patent number: 9466969
    Abstract: An electrical system includes a first circuit breaker that digitally senses a first current to a first load, and a second circuit breaker that digitally senses a second current to a second load and provides an output to the first circuit breaker. The first circuit breaker determines an average current based upon the first sensed current and the output from the second circuit breaker, and the first and second circuit breakers terminate power to the first and second loads if the average current is greater than a threshold value.
    Type: Grant
    Filed: March 24, 2014
    Date of Patent: October 11, 2016
    Assignee: Hamilton Sundstrand Corporation
    Inventor: Markus Greither
  • Patent number: 9356762
    Abstract: Electric Vehicle Service Equipment (EVSE) and Electric Vehicle (EV) are disclosed n. In an example embodiment, a modem is coupled to the pilot wire that couples the EVSE and the EV. The modem transmits both pulse width modulation (PWM) command signals and power line communication (PLC) signals to a remote device via the pilot wire. The modem interleaves the PWM and PLC signals on the pilot wire so that latency requirements for the PWM signals are maintained. The modem supports parallel protocol stacks in which PLC signals are processed in a first path and PWM signals are processed in a second path that bypasses the first path and provides the PWM signals directly to a MAC layer. The modem may create a modified frame for the PLC signals to maintain the latency requirements.
    Type: Grant
    Filed: April 21, 2015
    Date of Patent: May 31, 2016
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Ramanuja Vedantham, Gang Gary Xu, Donald P. Shaver
  • Patent number: 9337649
    Abstract: Aspects of the invention provide for a fault processing system. In one embodiment, the fault processing system includes: a first processing engine wrapper having: an inbound pipe configured to obtain a first claimcheck data packet; a processing engine component configured to: process a first context message derived from the first claimcheck data packet according to a fault rule selected from: a fault detection rule, a fault location rule, a fault isolation rule, or a fault restoration rule; and generate a second context message, the second context message including data processed according to the selected fault rule; and an outbound pipe configured to provide a second claimcheck data packet derived from the second context message.
    Type: Grant
    Filed: June 14, 2011
    Date of Patent: May 10, 2016
    Assignee: General Electric Company
    Inventors: Atul Nigam, Ramon Juan San Andres
  • Patent number: 9331746
    Abstract: An electrical distribution system wherein information is communicated to and/or from an electrical component of the electrical distribution system using near-field communications. The information may be communicated to and/or from the electrical component using an electronic device such as a dedicated near-field device, a smartphone or a configuration card device. Also, a method of obtaining information from an electrical component of an electrical distribution system, such as a circuit interrupter, includes generating a machine readable element that comprises first information in encoded form, the first information relating to the operation and/or status of the circuit interrupter, displaying the machine readable element on the circuit interrupter, capturing an image of the machine readable element, obtaining the first information based on the image, and displaying second information based on the obtained first information.
    Type: Grant
    Filed: December 19, 2012
    Date of Patent: May 3, 2016
    Assignee: EATON CORPORATION
    Inventors: Patrick T. Walsh, Deborah K. Mort, David R. Rohn
  • Patent number: 9276388
    Abstract: An electrical power distribution unit can include a power distribution unit enclosure, a power input associated with the power distribution unit enclosure, and a plurality of power outputs associated with the power distribution unit enclosure. At least certain power outputs can be connectable to one or more electrical loads external to the power distribution unit enclosure and to the power input. In some embodiments, an intelligent power section can communicate with at least one of the power outputs and can connect to a communications network external to the power distribution unit enclosure.
    Type: Grant
    Filed: March 18, 2014
    Date of Patent: March 1, 2016
    Assignee: Server Technology, Inc.
    Inventors: Carrel W. Ewing, Brian P. Auclair, Andrew J. Cleveland, James P. Maskaly, Dennis W. McGlumphy, Mark J. Bigler
  • Patent number: 9237064
    Abstract: The invention provides a communication system for a power distribution network, which comprises at least two distribution domains, each of the domains includes one management device and at least one electrical device. The management device is configured as connected with the electrical devices within its domain, and is further configured as capable of collect information from the electrical devices. The system also comprises a communication link, which is arranged for the management devices of different domains, and the management devices are configured as capable of directly exchanging information through the link.
    Type: Grant
    Filed: August 12, 2010
    Date of Patent: January 12, 2016
    Assignee: ABB RESEARCH LTD.
    Inventors: Zhao Wang, Bernhard Deck, Jukka Kinnunen
  • Patent number: 9184004
    Abstract: A switchgear includes a switching device, which is driven by a propellant chemical charge or fast acting switch. The switchgear includes a current or fault current detection unit, and an optical sensor unit for light arc or fault light arc detection, without the need of having an auxiliary voltage applied. In order to reduce the closing time of an earthing switch, the electrical circuit of an inductive current detection unit is electrically connected in series with a light sensing switching path, and a current signal directly ignites the propellant chemical charge or fast acting switch by using a limited electronic device.
    Type: Grant
    Filed: February 1, 2013
    Date of Patent: November 10, 2015
    Assignee: ABB TECHNOLOGY AG
    Inventor: Dietmar Gentsch
  • Patent number: 9118173
    Abstract: Disclosed are a digital protection control system and a digital protection control apparatus, wherein the digital protection control apparatus can easily be made to have more terminals, even when the number of terminals of a power transmission line increases. The digital protection control system has, as terminal stations thereof, a reference station that is to become the reference point for the sampling time at which power grid current information is to be taken in, tail-end stations that take in power grid current information from the power grid system, and intermediate stations that are connected between the reference station and the tail-end stations via transmission paths. The intermediate station is provided with an uplink transmission unit that is connected to a transmission path at the reference station side thereof, and a plurality of downlink transmission units that are connected to transmission paths at the tail-end station side thereof.
    Type: Grant
    Filed: February 3, 2010
    Date of Patent: August 25, 2015
    Assignee: Hitachi, Ltd.
    Inventors: Chikashi Komatsu, Mitsuyasu Kido, Shoji Yoshida, Kazuhisa Takami
  • Patent number: 9086868
    Abstract: The hub device includes a USB hub IC; a voltage converter that converts a source voltage supplied to the Hub device into a source voltage to be supplied to the USB device/devices connected to the plurality of downstream ports, and, in a case that the USB device/devices is/or in an abnormal condition, outputs a signal notifying the abnormal condition; and a plurality of switch units that interrupts a source voltage to the USB device/devices, and outputs an overcurrent detection signal when overcurrent flows into the USB device/devices, wherein the USB hub IC includes a plurality of overcurrent detection terminals into which the overcurrent detection signal from the plurality of switch units is input, and a signal notifying the abnormal condition causes the plurality of overcurrent detection terminals of the USB hub IC to be in an overcurrent detection condition.
    Type: Grant
    Filed: November 1, 2012
    Date of Patent: July 21, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hiroshi Shiba
  • Publication number: 20150092309
    Abstract: A protection device, externally connectable to an existing circuit breaker with zone selective interlock functionality, enables a circuit breaker to implement directional zone selective interlock. The protection device includes a first input port and a first output port connectable to a circuit breaker, and second and third ports for connecting to a protection device of another circuit breaker and for transmitting interlock signals via an input bus and an output bus inside the EDP. A control unit is configured to enable one of the second and third ports as a second input port and the other as a second output port according to the direction of current currently flowing through the circuit breaker; and configured to forward an interlock signal from the first input port to the output bus and to forward an interlock signal on the input bus received from the second input port to the first output port.
    Type: Application
    Filed: September 8, 2014
    Publication date: April 2, 2015
    Inventors: Wei Gang CHEN, Mario DANKERT, Li Ming HUANG, Yue ZHUO
  • Patent number: 8982519
    Abstract: A current differential relay comprises: an interface section; a quantization section; a communication section; and a difference calculation section. The quantization section quantizes current received by the interface section and converts it to first current data. The communication section, in the case where this relay is a representative current differential relay of a first group, transmits second current data from another current differential relay belonging to the first group and the first current data jointly to a representative current differential relay belonging to the second group, receives third current data from the representative current differential relay, and transmits the third current data to the other current differential relays. A difference calculation section executes a current difference calculation based on the first to third current data.
    Type: Grant
    Filed: September 5, 2013
    Date of Patent: March 17, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Koichi Okuno, Masamichi Saga
  • Patent number: 8981951
    Abstract: A method of monitoring the grading margin between at least two time-current characteristics of Intelligent Electronic Devices (IEDA, IEDB) installed in an electrical power system, each Intelligent Electronic Device comprising a counting means, the grading margin comprising a safety margin set by a user, characterized in that it comprises, when a fault occurs which causes a fault current in the electrical power system, a step of providing a warning to the user when the safety margin is infringed upon.
    Type: Grant
    Filed: November 5, 2009
    Date of Patent: March 17, 2015
    Assignees: Alstom Technology Ltd, Schneider Electric Energy UK Ltd
    Inventors: Sankara Subramanian, Simon Richards, Alan Wixon
  • Patent number: 8908342
    Abstract: A power distribution feeder system includes a plurality of power sources, a plurality of switching components coupled to the power sources by a plurality of line sections, and an IED coupled to each switching component and configured to monitor any line section coupled to the switching component, each IED containing protection logic configured to detect a jump in current on a faulted line section, communicate the jump in current to other IEDs coupled to the faulted line section, receive information from the other IEDs coupled to the faulted line section regarding any jump in current detected by the other IEDs, employ the received information from the other IEDs to confirm a fault in the faulted line section, and issue a trip command to isolate the faulted line section based on the current jump detected by the IED and current jump information received from other IEDs coupled to the line section.
    Type: Grant
    Filed: April 3, 2013
    Date of Patent: December 9, 2014
    Assignee: Siemens Industry, Inc.
    Inventors: Andre Smit, Alexandr S. Stinskiy
  • Patent number: 8867185
    Abstract: Method of protection zone selection in a multiple busbar arrangement, the multiple busbar arrangement including busbar zones and bays connectable to the busbar zones, which bays include measurement transformers. The method includes the steps of: receiving first connection data including information of an operational status of measurement transformer to busbar zone connections; determining all pairs of connected busbar zone to busbar zone connections based on the first connection data; comparing data representing pairs of busbar zone to busbar zone connections, based on the comparing; assigning each pair of busbar zones which has a busbar zone in common with at least another pair of busbar zone to busbar zone connection to a respective protection zone; and defining any busbar zone that is not connected to any other busbar zone as a protection zone. The present invention also relates to a computer program product and a device for carrying out the method.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: October 21, 2014
    Assignee: ABB Research Ltd.
    Inventor: Li He