Evaluating Accuracy of Fault Location Algorithms Based on Terminal Current and Voltage Data

Abstract

<p class="MsoNormal">Accurate estimation of fault location is essential forreliability of power system. For this purpose, fault location algorithms arestudied and compared in this paper. These algorithms are based on themeasurements taken from either sending end of a transmission line or bothsending and receiving ends of the line. The types of fault location algorithmsare discussed first. The effectiveness of the algorithms are tested on a faultytransmission line simulated in DigSILENT. Algorithms developed in MATLAB use thevoltage and current values obtained from the simulated system. The impact ofthe fault distance, fault types and the fault resistance are examined indetecting the fault location. The study results reveal that the symmetricalfault location algorithm accurately estimates the fault location in all cases.<o:p></o:p>