Patents by Inventor Zachary King Sheffield

Zachary King Sheffield 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).

  • Testing system for traveling wave fault detectors
    Patent number: 11320475
    Abstract: A testing apparatus for imposing a traveling wave signal on an electric system signal for testing a fault detector is disclosed herein. The fault detector may be configured to simulate a fault at a particular location by controlling the timing of the traveling wave signal. The testing apparatus may be configured to impose multiple traveling wave signals to test the accuracy of the fault location determined by the fault detector. The testing apparatus may be configured to determine the calculation accuracy of the fault detector. The testing apparatus may impose a traveling wave signal on a signal simulating an electrical signal on an electric power delivery system. The testing apparatus may be used to test capabilities of a fault detector of detecting a fault using traveling waves or incremental quantities.
    Type: Grant
    Filed: February 17, 2020
    Date of Patent: May 3, 2022
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventors: David E. Whitehead, Tony J. Lee, Zachary King Sheffield, Tracey G. Windley
  • TESTING SYSTEM FOR TRAVELING WAVE FAULT DETECTORS
    Publication number: 20200182956
    Abstract: A testing apparatus for imposing a traveling wave signal on an electric system signal for testing a fault detector is disclosed herein. The fault detector may be configured to simulate a fault at a particular location by controlling the timing of the traveling wave signal. The testing apparatus may be configured to impose multiple traveling wave signals to test the accuracy of the fault location determined by the fault detector. The testing apparatus may be configured to determine the calculation accuracy of the fault detector. The testing apparatus may impose a traveling wave signal on a signal simulating an electrical signal on an electric power delivery system. The testing apparatus may be used to test capabilities of a fault detector of detecting a fault using traveling waves or incremental quantities.
    Type: Application
    Filed: February 17, 2020
    Publication date: June 11, 2020
    Applicant: Schweitzer Engineering Laboratories, Inc.
    Inventors: David E. Whitehead, Tony J. Lee, Zachary King Sheffield, Tracey G. Windley
  • Testing system for traveling wave fault detectors
    Patent number: 10564246
    Abstract: A testing apparatus for imposing a traveling wave signal on an electric system signal for testing a fault detector is disclosed herein. The fault detector may be configured to simulate a fault at a particular location by controlling the timing of the traveling wave signal. The testing apparatus may be configured to impose multiple traveling wave signals to test the accuracy of the fault location determined by the fault detector. The testing apparatus may be configured to determine the calculation accuracy of the fault detector. The testing apparatus may impose a traveling wave signal on a signal simulating an electrical signal on an electric power delivery system. The testing apparatus may be used to test capabilities of a fault detector of detecting a fault using traveling waves or incremental quantities.
    Type: Grant
    Filed: October 13, 2016
    Date of Patent: February 18, 2020
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventors: David E. Whitehead, Tony J. Lee, Zachary King Sheffield, Tracey G. Windley
  • Testing system for traveling wave fault detectors
    Patent number: 10564247
    Abstract: A testing system for imposing a traveling wave signal on an electric power system signal for testing a fault detector is disclosed herein. The testing system may be configured to simulate a fault at a simulated location by controlling the timing of the traveling wave signal. The testing system may be configured to impose multiple traveling wave signals to test the accuracy of the fault location determined by the fault detector. The testing system may be configured with multiple testing apparatuses using time coordination and referenced to an intended fault instant. The testing system may be configured to supply traveling waves of different polarities to test for different fault type detection.
    Type: Grant
    Filed: March 20, 2018
    Date of Patent: February 18, 2020
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventors: Armando Guzman-Casillas, Mangapathirao Venkata Mynam, Taylor Joseph Blanc, David E. Whitehead, Tony J. Lee, Zachary King Sheffield, Tracey G. Windley
  • TESTING SYSTEM FOR TRAVELING WAVE FAULT DETECTORS
    Publication number: 20180210060
    Abstract: A testing system for imposing a traveling wave signal on an electric power system signal for testing a fault detector is disclosed herein. The testing system may be configured to simulate a fault at a simulated location by controlling the timing of the traveling wave signal. The testing system may be configured to impose multiple traveling wave signals to test the accuracy of the fault location determined by the fault detector. The testing system may be configured with multiple testing apparatuses using time coordination and referenced to an intended fault instant. The testing system may be configured to supply traveling waves of different polarities to test for different fault type detection.
    Type: Application
    Filed: March 20, 2018
    Publication date: July 26, 2018
    Applicant: Schweitzer Engineering Laboratories, Inc.
    Inventors: Armando Guzman-Casillas, Mangapathirao Venkata Mynam, Taylor Joseph Blanc, David E. Whitehead, Tony J. Lee, Zachary King Sheffield, Tracey G. Windley
  • Testing System for Traveling Wave Fault Detectors
    Publication number: 20170102444
    Abstract: A testing apparatus for imposing a traveling wave signal on an electric system signal for testing a fault detector is disclosed herein. The fault detector may be configured to simulate a fault at a particular location by controlling the timing of the traveling wave signal. The testing apparatus may be configured to impose multiple traveling wave signals to test the accuracy of the fault location determined by the fault detector. The testing apparatus may be configured to determine the calculation accuracy of the fault detector. The testing apparatus may impose a traveling wave signal on a signal simulating an electrical signal on an electric power delivery system. The testing apparatus may be used to test capabilities of a fault detector of detecting a fault using traveling waves or incremental quantities.
    Type: Application
    Filed: October 13, 2016
    Publication date: April 13, 2017
    Inventors: David E. Whitehead, Tony J. Lee, Zachary King Sheffield, Tracey G. Windley