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公开(公告)号：US10264647B1
公开(公告)日：2019-04-16
申请号：US16101990
申请日：2018-08-13
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Evan J. Penberthy , Thomas Allen Stanley , Cole Salo
Abstract: Described herein are adaptable control apparatus indicators for dedicated operations of a device for operating an electric power delivery system. The control apparatus indicators may be buttons on an intelligent electronic device (IED) used for the dedicated operations of opening and closing a circuit breaker of the electric power delivery system. The colors of the control apparatus indicators may be configurable by a user upon configuration of the IED.
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公开(公告)号：US10261567B2
公开(公告)日：2019-04-16
申请号：US14278195
申请日：2014-05-15
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Mangapathirao Venkata Mynam , Armando Guzman-Casillas
Abstract: Disclosed herein are intelligent electronic devices configured for monitoring an electric power delivery system and for determining a plurality of configuration settings based on measurements from the electric power delivery system. An IED may identify a configuration event, obtain a plurality of electrical parameters associated with the configuration event, determine a plurality of configuration parameters from the electrical parameters, determine a plurality of configuration settings based on the configuration parameters, and apply the settings to the IED. The IED may also be configured to initiate the configuration event by opening a single pole of a multi-phase power line.
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公开(公告)号：US20190094845A1
公开(公告)日：2019-03-28
申请号：US15718145
申请日：2017-09-28
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Dennis Haes , Normann Fischer
Abstract: Disclosed herein are a variety of systems and methods related to detection of a cross-country fault in an electrical power system. In one embodiment, a system consistent with the present disclosure may be configured to monitor electrical parameters in the electrical power system. The system may determine when a voltage magnitude of one phase exceeds a first voltage threshold. The one phase that exceeds the first voltage threshold may be identified as an un-faulted phase. The system may further be configured to determine that the voltage magnitude of the un-faulted phase exceeds a second threshold based on a zero-sequence voltage. The system may further be configured to determine that a phase angle between the un-faulted phase and the zero-sequence voltage is within a range. A protective action to clear the cross-country fault condition may be implemented upon identification of a cross-country fault.
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公开(公告)号：US20190094292A1
公开(公告)日：2019-03-28
申请号：US16137350
申请日：2018-09-20
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Edmund O. Schweitzer, III , Bogdan Z. Kasztenny
Abstract: The present disclosure pertains to systems and methods for monitoring traveling waves in an electric power system. In various embodiments, a data acquisition subsystem may acquire electric power system signals. A traveling wave detection subsystem may detect two or more traveling waves based on the electric power system signals and determine a location of an event triggering the traveling waves. A traveling wave security subsystem may selectively generate a restraining signal based on the location of the event as within a blocking zone. A protection action subsystem may implement a protective action when the location is outside of a blocking zone. In various embodiments, a protective action will not be implemented for traveling waves launched from known locations of switching devices operating normally. Further, protective actions may be restrained if a magnitude of a traveling wave differs from an expected value based on a pre-fault voltage.
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公开(公告)号：US10236675B2
公开(公告)日：2019-03-19
申请号：US15644355
申请日：2017-07-07
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Edmund O. Schweitzer, III , Bogdan Z. Kasztenny , David E. Whitehead
Abstract: An electric power delivery system may be protected upon occurrence of a fault condition by the systems and methods disclosed herein by detecting the fault condition and signaling a protective action before the overcurrent condition reaches the protective equipment. The protective action may be an opening of a circuit breaker or engagement of a fault current limiter. The overcurrent condition may be a non-steady-state condition. The fault may be detected using traveling wave or incremental quantity techniques.
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Patent Agency Ranking
公开(公告)号：US20190079134A1
公开(公告)日：2019-03-14
申请号：US16053601
申请日：2018-08-02
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Marcos A. Donolo , Scott M. Manson
IPC: G01R31/327 , H01H71/04
Abstract: Monitoring a health status of a current interruption device, such as a circuit breaker, is disclosed herein. For example, a device for monitoring a current interruption device may include a processor and a memory. The processor may execute instructions stored in the memory to cause the processor to monitor one or more current measurements of current from an electrical conductor that delivers electrical energy to a load. The processor may provide a signal indicating a health status of the current interruption device based at least in part on the one or more current measurements.
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公开(公告)号：US20180331602A1
公开(公告)日：2018-11-15
申请号：US16043485
申请日：2018-07-24
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Marcos A. Donolo
Abstract: Disclosed herein is a shaft-mounted monitor for monitoring conditions of a rotating shaft using a calculated rotational component of the rotating shaft. The monitor may include a sensor such as an accelerometer, thermal sensor, strain gauge, or the like. In various embodiments, a variety of parameters relating to the rotating shaft may be monitored, such as a temperature, rotational speed, angular position, torque, power, frequency, or the like. The monitor may include a wireless transmitter to transmit the monitored condition of the rotating shaft to an intelligent electronic device or a monitoring system.
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公开(公告)号：US20180292448A1
公开(公告)日：2018-10-11
申请号：US15994827
申请日：2018-05-31
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Edmund O. Schweitzer, III , Mangapathirao Venkata Mynam , David E. Whitehead , Bogdan Z. Kasztenny , Armando Guzman-Casillas , Veselin Skendzic
CPC classification number: G01R31/11 , G01R31/085 , H02H1/0007 , H02H1/0092 , H02H3/083 , H02H7/263 , H02H7/265
Abstract: The present disclosure relates to detection of faults in an electric power system. In one embodiment, a time-domain traveling wave directional subsystem is configured to receive a plurality of current traveling wave and a plurality of voltage traveling wave time-domain representations based on electrical conditions in the electric power delivery system. The plurality of current and voltage traveling wave time-domain representations may be compared to respective minimum thresholds. An integral may be generated based on a product of the plurality of current and voltage traveling wave time-domain representations when the current and voltage traveling wave time-domain representations exceed the minimum thresholds. A sign of the integral may reflect whether the fault is in the forward or reverse direction. A fault detector subsystem configured to declare the fault when the sign reflects that the fault is in the forward direction and the integral exceeds a security margin.
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公开(公告)号：US10090664B2
公开(公告)日：2018-10-02
申请号：US15269959
申请日：2016-09-19
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Edmund O. Schweitzer, III , Mangapathirao Venkata Mynam , David E. Whitehead , Bogdan Z. Kasztenny , Armando Guzman-Casillas , Veselin Skendzic
Abstract: The present disclosure relates to detection of faults in an electric power system. In one embodiment, an incremental quantities subsystem is configured to determine a forward torque, an operating torque, and a reverse torque based on the plurality of time-domain representations of electrical conditions. Each of the forward torque, the operating torque, and the reverse torque may be integrated over an interval. A fault detection subsystem may determine an occurrence of the fault based on a comparison of the operating torque to the forward torque and the reverse torque. Further, a direction of the fault may be determined based on the comparison of the forward torque, the operating torque, and the reverse torque. A fault may be declared based on the comparison and the direction. A protective action subsystem may implement a protective action based on the declaration of the fault.
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公开(公告)号：US20180278048A1
公开(公告)日：2018-09-27
申请号：US15994817
申请日：2018-05-31
Applicant: Schweitzer Engineering Laboratories, Inc.
Inventor： Edmund O. Schweitzer, III , Mangapathirao Venkata Mynam , David E. Whitehead , Bogdan Z. Kasztenny , Armando Guzman-Casillas , Veselin Skendzic
CPC classification number: G01R31/11 , G01R31/085 , H02H1/0007 , H02H1/0092 , H02H3/083 , H02H7/263 , H02H7/265
Abstract: The present disclosure relates to detection of faults in an electric power system. In one embodiment, an incremental quantities subsystem may be configured to calculate a plurality of values of an operating quantity based on the plurality of time-domain representations of electrical conditions. The incremental quantities subsystem may also calculate a plurality of values of a restraining quantity based on the plurality of time-domain representations of electrical conditions. An interval during which the calculated operating quantity exceeds the calculated restraining quantity may be determined. A fault detector subsystem may be configured to declare a fault based on the calculated operating quantity exceeding the calculated restraining quantity by a security margin. A protective action subsystem configured to implement a protective action based on the declaration of the fault.
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