Fault Location at Lines with Trilateral Feed

Abstract

An algorithm for determining the location of damage on the line with three-way power is proposed. As input information, the parameters of the mode, measured simultaneously from three sides of the line, are used. According to the measurement results, the currents and voltages of the direct sequence are determined. The line is considered consisting of three parts. The algorithm first determines the section in which the damage occurred, and then is done equivalentization the intact sections of the line relative to the junction point of the line parts. The direct sequence equivalent circuit is reduced to a circuit consisting of two parts relative to the point of damage, i.e. line with two-way power. The analysis of the accuracy of determining the location of the damage was carried out on the basis of information on real line damage.