Patents by Inventor Chadburn Troy Daniels

Chadburn Troy Daniels 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).

  • Patent number: 10978866
    Abstract: Polarizing signals for electric power system directional overcurrent and distance protection are disclosed herein. The polarizing signal may be determined using a power system tracking signal, generated using a synchronous reference frame to track to a pre-fault voltage, and maintained using a phase-locked loop. The power system tracking signal may be used for a time after a voltage signal is lost, after which a self-polarizing signal may be used. Where voltage signals are not available, a current may be used to generate the polarizing signal.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: April 13, 2021
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventors: Bogdan Z Kasztenny, Chadburn Troy Daniels
  • Patent number: 10938198
    Abstract: Variable window filtered power system signals for electric power system monitoring and protection operations of an electric power system are provided herein. Upon detection of a power system disturbance, the filter window is decreased after a predetermined resize delay such that pre-disturbance samples are not included in the new window. As additional samples are obtained, the filter window grows to include new samples until the window reaches an initial filter window length. Gain and group delay correction factors accounting for window size and signal frequency are approximated.
    Type: Grant
    Filed: May 28, 2019
    Date of Patent: March 2, 2021
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventors: Bogdan Z. Kasztenny, Chadburn Troy Daniels
  • Patent number: 10677834
    Abstract: Distance protection of electric power delivery systems are disclosed herein where a fault within a zone of protection is detected using time-domain fault detection supervised by frequency-domain fault detection. The distance fault detection may be asserted when the real or imaginary parts of the time-domain operating and polarizing quantities are both positive or both negative and an angle between the frequency domain operating and polarizing quantities is within a predetermined range. Additional security may be provided using a level check, a sign consistency check, or a disturbance detector.
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: June 9, 2020
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventors: Bogdan Z. Kasztenny, Mangapathirao Venkata Mynam, Chadburn Troy Daniels
  • Patent number: 10641815
    Abstract: A secure distance protection for electric power delivery systems under transient conditions is disclosed herein. Upon detection of a transient condition, additional security is added to a distance protection element before a protective action is taken. The transient condition may be detected when an angle of advancement of an operating signal is outside of a predetermined threshold. An unsecure condition may also be detected before applying additional security. The unsecure condition may be detected based on an estimation of a fault within a close-in zone and a voltage magnitude falling below a threshold.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: May 5, 2020
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventors: Bogdan Z. Kasztenny, Chadburn Troy Daniels
  • Publication number: 20200112161
    Abstract: Variable window filtered power system signals for electric power system monitoring and protection operations of an electric power system are provided herein. Upon detection of a power system disturbance, the filter window is decreased after a predetermined resize delay such that pre-disturbance samples are not included in the new window. As additional samples are obtained, the filter window grows to include new samples until the window reaches an initial filter window length. Gain and group delay correction factors accounting for window size and signal frequency are approximated.
    Type: Application
    Filed: May 28, 2019
    Publication date: April 9, 2020
    Applicant: Schweitzer Engineering Laboratories, Inc.
    Inventors: Bogdan Z. Kasztenny, Chadburn Troy Daniels
  • Publication number: 20200106261
    Abstract: Polarizing signals for electric power system directional overcurrent and distance protection are disclosed herein. The polarizing signal may be determined using a power system tracking signal, generated using a synchronous reference frame to track to a pre-fault voltage, and maintained using a phase-locked loop. The power system tracking signal may be used for a time after a voltage signal is lost, after which a self-polarizing signal may be used. Where voltage signals are not available, a current may be used to generate the polarizing signal.
    Type: Application
    Filed: June 26, 2019
    Publication date: April 2, 2020
    Applicant: Schweitzer Engineering Laboratories, Inc.
    Inventors: Bogdan Z Kasztenny, Chadburn Troy Daniels
  • Publication number: 20200103455
    Abstract: A secure distance protection for electric power delivery systems under transient conditions is disclosed herein. Upon detection of a transient condition, additional security is added to a distance protection element before a protective action is taken. The transient condition may be detected when an angle of advancement of an operating signal is outside of a predetermined threshold. An unsecure condition may also be detected before applying additional security. The unsecure condition may be detected based on an estimation of a fault within a close-in zone and a voltage magnitude falling below a threshold.
    Type: Application
    Filed: September 27, 2018
    Publication date: April 2, 2020
    Applicant: Schweitzer Engineering Laboratories, Inc.
    Inventors: Bogdan Z. Kasztenny, Chadburn Troy Daniels
  • Publication number: 20200088780
    Abstract: Distance protection of electric power delivery systems are disclosed herein where a fault within a zone of protection is detected using time-domain fault detection supervised by frequency-domain fault detection. The distance fault detection may be asserted when the real or imaginary parts of the time-domain operating and polarizing quantities are both positive or both negative and an angle between the frequency domain operating and polarizing quantities is within a predetermined range. Additional security may be provided using a level check, a sign consistency check, or a disturbance detector.
    Type: Application
    Filed: September 14, 2018
    Publication date: March 19, 2020
    Applicant: Schweitzer Engineering Laboratories, Inc.
    Inventors: Bogdan Z. Kasztenny, Mangapathirao Venkata Mynam, Chadburn Troy Daniels