Patents by Inventor Luth r S. Anderson

Luth r S. Anderson 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).

  • Protective relay with synchronized phasor measurement capability for use in electric power systems
    Patent number: 6845333
    Abstract: The relay system obtains voltage and current values from a power line and uses a first sampling element to sample the voltage and current values at selected intervals of time. The resulting sampled signals are used for power system-wide protection, control, monitoring and metering. The sampled signals are then resampled at a rate which is a selected multiple of the power system frequency. The results of the resampling are used by processing circuitry for protection functions including fault determinations.
    Type: Grant
    Filed: December 5, 2003
    Date of Patent: January 18, 2005
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventors: Luth r S. Anderson, Armando Guzman-Casillas, Gregary C. Zweigle, Gabriel B nmouyal
  • Protective relay with synchronized phasor measurement capability for use in electric power systems
    Publication number: 20040093177
    Abstract: The relay system obtains voltage and current values from a power line and uses a first sampling element to sample the voltage and current values at selected intervals of time. The resulting sampled signals are used for power system-wide protection, control, monitoring and metering. The sampled signals are then resampled at a rate which is a selected multiple of the power system frequency. The results of the resampling are used by processing circuitry for protection functions including fault determinations.
    Type: Application
    Filed: December 5, 2003
    Publication date: May 13, 2004
    Inventors: Edmund O. Schweitzer, Luth r S. Anderson, Armando Guzman-Casillas, Gregary C. Zweigle, Gabriel Benmouyal