FAULT LOCATOR, FAULT LOCALIZATION METHOD, AND FAULT LOCALIZATION PROGRAM

摘要

PPROBLEM TO BE SOLVED: To provide a fault locator, a fault localization method and a fault localization program for improving accuracy in fault localization during a transmission line failure. PSOLUTION: This invention is designed so that a pre-fault voltage computing section 110 computes a pre-fault voltage of each observing point, a voltage residual percentage estimate calculating section 150 uses the pre-fault voltage computed by the pre-fault voltage computing section 110 to calculate the estimation of a voltage residual percentage at each observing point while traveling in fault locations, and an evaluating section 160 calculates an evaluation value F for each fault location by adding a mean value of the absolute value for a difference between the actual measurement and the estimation of the voltage residual percentage at the observing point weighted from an instantaneous low voltage reduction level to the standard deviation of the value for a difference between the actual measurement and estimation of the voltage residual percentage weighted from the instantaneous low voltage reduction level. PCOPYRIGHT: (C)2010,JPO&INPIT