Patents Assigned to Progress Energy Service Company
  • Double-ended distance-to-fault location system using time-synchronized positive-or negative-sequence quantities
    Publication number: 20040032265
    Abstract: When a disturbance (for example, lightning strike) occurs on a high-voltage overhead transmission line, the line must be checked for any possible damage. If the distance-to-fault is known, line crews can be quickly dispatched for any necessary repair. The present invention is a fault location method and system that uses filtered, time-synchronized positive- or negative-sequence voltage and current measurements from both ends of the overhead transmission line to determine the exact distance to the fault with respect to either end.
    Type: Application
    Filed: June 13, 2003
    Publication date: February 19, 2004
    Applicant: Progress Energy Service Company
    Inventor: Steven P. Turner