Patents by Inventor Gregary C. Zweigle
Gregary C. Zweigle has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11035891Abstract: Electric power system voltage control and voltage stability may be calculated using energy packets. Sets of negative energy packet sets normalized by a set of positive and negative energy packet sets may be used for voltage control by adding or removing capacitive units. Energy packet voltage indicators may be calculated using energy packets, and used to determine voltage stability. Control actions may be taken depending on the determined voltage stability.Type: GrantFiled: March 6, 2020Date of Patent: June 15, 2021Assignee: Schweitzer Engineering Laboratories, Inc.Inventors: Edmund O. Schweitzer, III, Gregary C. Zweigle, Ellery A. Blood
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Patent number: 11012016Abstract: A controller may use energy packets to control a prime mover of a machine. The controller may include an energy packet measurement control to calculate energy packets and convert the energy packets into a fuel valve reference. Further, a frequency control may receive system feedback associated with the monitored machine and generate a frequency correction based on the system feedback. The controller may add the energy packet value and the frequency correction to determine a prime mover power reference and provide the prime mover power reference to a fuel valve control of the machine.Type: GrantFiled: October 9, 2020Date of Patent: May 18, 2021Assignee: Schweitzer Engineering Laboratories, Inc.Inventors: Edmund O. Schweitzer, III, Gregary C. Zweigle, Ellery A. Blood, Scott M. Manson
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Publication number: 20210111652Abstract: A controller may use energy packets to control a prime mover of a machine. The controller may include an energy packet measurement control to calculate energy packets and convert the energy packets into a fuel valve reference. Further, a frequency control may receive system feedback associated with the monitored machine and generate a frequency correction based on the system feedback. The controller may add the energy packet value and the frequency correction to determine a prime mover power reference and provide the prime mover power reference to a fuel valve control of the machine.Type: ApplicationFiled: October 9, 2020Publication date: April 15, 2021Applicant: Schweitzer Engineering Laboratories, Inc.Inventors: Edmund O. Schweitzer, III, Gregary C. Zweigle, Ellery A. Blood, Scott M. Manson
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Publication number: 20210111651Abstract: A device to control a genset engine may use multiple feedback loops to provide a fast stable response to load changes. An outer feedback loop may receive frequency measurements and power measurements of a genset engine and determine a dispatch adjustment comprising a frequency setpoint based on the frequency measurements and power measurements. A middle feedback loop may comprise a double deadband droop filter that periodically generates a pulse based on the frequency setpoint and the power measurements. The middle feedback loop may update an inner loop setpoint based on the pulse. An inner feedback loop may alter a target fuel valve reference of the genset engine based on the inner loop setpoint generated by the second controller and a fuel valve droop.Type: ApplicationFiled: October 12, 2020Publication date: April 15, 2021Applicant: Schweitzer Engineering Laboratories, Inc.Inventors: Scott M. Manson, Ellery A. Blood, Gregary C. Zweigle
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Publication number: 20210109158Abstract: A frequency tracking system may use shaft speed and electrical frequency to estimate a frequency of a monitored machine. The frequency tracking system may convert shaft speed to a mechanical frequency and blend the electrical frequency and the mechanical frequency together to determine an estimated frequency. The frequency tracking system may blend the frequencies based on an operating state of the monitored machine and the frequency sensors.Type: ApplicationFiled: October 14, 2019Publication date: April 15, 2021Applicant: Schweitzer Engineering Laboratories, Inc.Inventors: Scott M. Manson, Ellery A. Blood, Gregary C. Zweigle
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Patent number: 10978863Abstract: The present disclosure relates to systems and methods of sag in a power line. In an embodiment, a monitoring device may include a distance sensor and an operating parameter sensor. A processor of the monitoring device may acquire, via the distance sensor, a first distance measurement. The processor may acquire, via the operating parameter sensor, a first operating parameter measurement. The processor may provide an output signal indicating that the power line is sagging when a combination of the first distance measurement and the first operating parameter measurement exceed a first combined distance-operating parameter threshold.Type: GrantFiled: January 15, 2019Date of Patent: April 13, 2021Assignee: Schweitzer Engineering Laboratories, Inc.Inventors: Scott M. Manson, Shankar V. Achanta, Gregary C. Zweigle, Richard M. Edge
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Patent number: 10971933Abstract: This disclosure includes various systems and methods for determining an operating stage based on electrical conditions in electric power delivery systems and identifying a control strategy based upon the operating stage. The control strategy may be selected and customized to avoid or to ameliorate stresses in an electric power delivery system while maintaining the stability of electric power delivery systems. Various embodiments consistent with the present disclosure may include a distributed controller configured receive a plurality of indications of electrical conditions from a plurality of control devices in electrical communication with the electrical power delivery system. The distributed controller may determine an operating stage from among a plurality of operating stages based upon the plurality of indications of electrical conditions. The distributed controller may further identify a control strategy based upon the operating stage.Type: GrantFiled: May 8, 2019Date of Patent: April 6, 2021Assignee: Schweitzer Engineering Laboratories, Inc.Inventors: Gregary C. Zweigle, Ellery A. Blood
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Publication number: 20200225273Abstract: The present disclosure relates to systems and methods of sag in a power line. In an embodiment, a monitoring device may include a distance sensor and an operating parameter sensor. A processor of the monitoring device may acquire, via the distance sensor, a first distance measurement. The processor may acquire, via the operating parameter sensor, a first operating parameter measurement. The processor may provide an output signal indicating that the power line is sagging when a combination of the first distance measurement and the first operating parameter measurement exceed a first combined distance-operating parameter threshold.Type: ApplicationFiled: January 15, 2019Publication date: July 16, 2020Applicant: Schweitzer Engineering Laboratories, Inc.Inventors: Scott M. Manson, Shankar V. Achanta, Gregary C. Zweigle, Richard M. Edge
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Publication number: 20200225274Abstract: The present disclosure relates to systems and methods of detecting discharge events on power lines. For example, a system may include an acoustic sensor that detects a sound wave emitted from a power line. The system may include a radio frequency (RF) sensor that detects a radio wave emitted from the power line. The system may include electrical sensor circuitry that detects an electrical parameter of power being delivered on the power line. The system may include a processor that determines that a discharge event has occurred based on the sound wave, the radio wave, and the electrical characteristic. The system may provide an output signal indicating that the partial discharge event has occurred.Type: ApplicationFiled: January 15, 2019Publication date: July 16, 2020Applicant: Schweitzer Engineering Laboratories, Inc.Inventors: Scott M. Manson, Shankar V. Achanta, Gregary C. Zweigle
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Publication number: 20200111176Abstract: Calculation of a value of energy passing a point of an electric power delivery system, and price associated with the value is disclosed herein. Use of energy packets according with the embodiments of this disclosure more accurately represents the amount of energy produced and consumed by equipment. Energy packets may be calculated over one or more phases, over configurable time periods. Energy packets may be used in conjunction with a monetary rate to calculate the price for billing an energy consumer or crediting an energy producer.Type: ApplicationFiled: October 1, 2019Publication date: April 9, 2020Applicant: Schweitzer Engineering Laboratories, Inc.Inventors: Edmund O. Schweitzer, III, David E. Whitehead, Gregary C. Zweigle, Dallas J. Jacobsen
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Publication number: 20190267807Abstract: This disclosure includes various systems and methods for determining an operating stage based on electrical conditions in electric power delivery systems and identifying a control strategy based upon the operating stage. The control strategy may be selected and customized to avoid or to ameliorate stresses in an electric power delivery system while maintaining the stability of electric power delivery systems. Various embodiments consistent with the present disclosure may include a distributed controller configured receive a plurality of indications of electrical conditions from a plurality of control devices in electrical communication with the electrical power delivery system. The distributed controller may determine an operating stage from among a plurality of operating stages based upon the plurality of indications of electrical conditions. The distributed controller may further identify a control strategy based upon the operating stage.Type: ApplicationFiled: May 8, 2019Publication date: August 29, 2019Applicant: Schweitzer Engineering Laboratories, Inc.Inventors: Gregary C. Zweigle, Ellery A. Blood
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Patent number: 10333312Abstract: This disclosure includes various systems and methods for determining an operating stage based on electrical conditions in electric power delivery systems and identifying a control strategy based upon the operating stage. The control strategy may be selected and customized to avoid or to ameliorate stresses in an electric power delivery system while maintaining the stability of electric power delivery systems. Various embodiments consistent with the present disclosure may include a distributed controller configured receive a plurality of indications of electrical conditions from a plurality of control devices in electrical communication with the electrical power delivery system. The distributed controller may determine an operating stage from among a plurality of operating stages based upon the plurality of indications of electrical conditions. The distributed controller may further identify a control strategy based upon the operating stage.Type: GrantFiled: June 13, 2014Date of Patent: June 25, 2019Assignee: Schweitzer Engineering Laboratories, Inc.Inventors: Gregary C. Zweigle, Ellery A. Blood
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Patent number: 10317467Abstract: Electrical power machines are monitored and a loss-of-field event is determined thereof using time stamped mechanical conditions and electrical conditions. The mechanical conditions may include rotational position, calculated and time stamped rotational frequency, valve position, temperature, or vibration. The time stamped electrical conditions may include electrical power system frequency, electrical power machine field data, electrical power machine terminal information such as voltage and current, and the like. Electrical and mechanical time-stamped electrical power machine data from different machines that may be local or remote from each other may be compared for monitoring the machines.Type: GrantFiled: May 12, 2015Date of Patent: June 11, 2019Assignee: Schweitzer Engineering Laboratories, Inc.Inventors: Nicholas C. Seeley, David J. Casebolt, Gregary C. Zweigle
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Patent number: 9985860Abstract: Combining and analyzing streamed and polled electric power delivery system information is disclosed herein. A system therefore includes a plurality of IEDs in communication with the electric power distribution system and configured to provide streaming and/or polled data via a communications network. An analysis engine in communication with the communications network receives selected streaming information and requested polled information, analyzes such streamed and polled information, and provides a display of such streaming and polled information to a user.Type: GrantFiled: September 22, 2014Date of Patent: May 29, 2018Assignee: Schweitzer Engineering Laboratories, Inc.Inventors: Gregary C. Zweigle, Eric J. Hewitt, Ellery A. Blood, Stanley P. Gotshall, Riley Grant Huddleston, William D. Morrison, Jared Kyle Bestebreur
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Patent number: 9819227Abstract: Disclosed is state trajectory prediction in an electric power delivery system. Electric power delivery system information is calculated from measurements by intelligent electronic devices (IEDs), and communicated to a state trajectory prediction system. The state trajectory prediction system may be configured to generate a load prediction profile. The load prediction profile may provide a predicted response of a load at a future time. Further, the state trajectory prediction system may be configured to generate a generator prediction profile that provides a predicted response of a generator at a future time. The state trajectory prediction system may generate a state trajectory prediction based, at least in part, on the load prediction profile and the generator prediction profile. The state trajectory prediction may represent a future state of the electric power delivery system.Type: GrantFiled: February 26, 2014Date of Patent: November 14, 2017Assignee: Schweitzer Engineering Laboratories, Inc.Inventors: Gregary C. Zweigle, Eric J. Hewitt, Ellery A. Blood
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Patent number: 9400330Abstract: Disclosed herein is a system for detecting manipulation of a global time source such as a Global Navigational Satellite System (GNSS) signal and mitigating against such manipulation. A plurality of receivers with geographical diversity receive GNSS signals, and calculate a time signal to be distributed to consuming devices. The receivers also communicate calculated time signals with other receivers. The receivers compare the time signals, and when a difference between the time signals exceeds a predetermined threshold, the receivers indicate that manipulation is likely. Such indication is shared across the network of receivers. The indication is further shared with consuming devices of the time signal from the compromised receiver. A second time signal that is not compromised may be shared with the consuming devices and/or used by the consuming devices. The consuming devices may modify their behavior when in receipt of the indication.Type: GrantFiled: May 17, 2013Date of Patent: July 26, 2016Assignee: Schweitzer Engineering Laboratories, Inc.Inventors: Shankar V. Achanta, Gregary C. Zweigle, Christopher R. Huntley
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Patent number: 9383735Abstract: Distributed controllers in an electric power delivery system obtain measurements and equipment status, calculate derived values, and determine Intelligent Electronic Device (IED) state, and share such with other distributed controllers and coordination controllers. Distributed controllers and coordination controllers further refine measurements, equipment status, derived values, and IED state. Control of the electric power delivery system is coordinated among the distributed controllers and the coordination controllers.Type: GrantFiled: March 14, 2013Date of Patent: July 5, 2016Assignee: Schweitzer Engineering Laboratories, Inc.Inventors: Edmund O. Schweitzer, III, David E. Whitehead, Gregary C. Zweigle
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Publication number: 20150331052Abstract: Electrical power machines are monitored according to the disclosure herein using time stamped mechanical conditions and electrical conditions. The mechanical conditions may include rotational position, calculated and time stamped rotational frequency, valve position, temperature, or vibration. The time stamped electrical conditions may include electrical power system frequency, electrical power machine field data, electrical power machine terminal information such as voltage and current, and the like. Electrical and mechanical time-stamped electrical power machine data from different machines that may be local or remote from each other may be compared for monitoring the machines.Type: ApplicationFiled: May 12, 2015Publication date: November 19, 2015Inventors: Nicholas C. Seeley, David J. Casebolt, Gregary C. Zweigle
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Publication number: 20150089027Abstract: Combining and analyzing streamed and polled electric power delivery system information is disclosed herein. A system therefore includes a plurality of IEDs in communication with the electric power distribution system and configured to provide streaming and/or polled data via a communications network. An analysis engine in communication with the communications network receives selected streaming information and requested polled information, analyzes such streamed and polled information, and provides a display of such streaming and polled information to a user.Type: ApplicationFiled: September 22, 2014Publication date: March 26, 2015Inventors: Gregary C. Zweigle, Eric J. Hewitt, Ellery A. Blood, Stanley P. Gotshall, Riley Grant Huddleston, William D. Morrison, Jared Kyle Bestebreur
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Publication number: 20150005970Abstract: This disclosure includes various systems and methods for determining an operating stage based on electrical conditions in electric power delivery systems and identifying a control strategy based upon the operating stage. The control strategy may be selected and customized to avoid or to ameliorate stresses in an electric power delivery system while maintaining the stability of electric power delivery systems. Various embodiments consistent with the present disclosure may include a distributed controller configured receive a plurality of indications of electrical conditions from a plurality of control devices in electrical communication with the electrical power delivery system. The distributed controller may determine an operating stage from among a plurality of operating stages based upon the plurality of indications of electrical conditions. The distributed controller may further identify a control strategy based upon the operating stage.Type: ApplicationFiled: June 13, 2014Publication date: January 1, 2015Inventors: Gregary C. Zweigle, Ellery A. Blood