Fault Location on EHV Lines Based on Electromagnetic Transients

Abstract

ABSTRBCT: Exact location offers a possibility €or shortening tlic unavailability of transmission lines. Processing the transient initiated by tripping of the faulty phase furnishes accurate data about tlie fault distance. Tlie concept of a fictive v* wave velocity makes possible to simplify the multimodal wave processes. Tlie transient transter of HV open core voltage transformers is investigated using niaiinly MV test rcsults. Tlie hardware specification of :i microprocessor controlled fault locator is givcn The results of processing thc ti ippitig transicnts 01 staged faults by this locator typc vcrifics the high accuracy of tlie location.