Method for fault location in uncompensated power lines with two-end unsynchronized measurement

摘要

A method is provided for fault location in uncompensated power lines with two-end unsynchronized measurement, finding an application in the power industry and for overhead and overhead-cable transmission or distribution lines. The method according to the invention includes measuring the voltage and currents at both ends (A) and (B) of the section, obtaining the phasor of the positive sequence voltages (V_A1, V_B1) measured at the ends (A) and (B), respectively, obtaining the phasor of the positive sequence currents (I_A1, I_B1) measured at the ends (A) and (B), respectively, determining whether there is a three-phase balanced fault, and using either a first subroutine or a second subroutine (depending on whether or not there is a fault), determining a distance (d) to the fault.