Fault location on power transmission lines based on new signal synchronization algorithm without utilizing line parameters

Abstract

This paper presents a method of synchronizing measurement signals from the two ends of transmission lines and the improved fault location algorithm applied to locating the fault occurred on the power transmission line. The algorithm allows time synchronization of the fault records obtained from the two-ends of the transmission lines without using line parameters. The positive-sequence components of the voltage signals and the measurement current from the two-ends of transmission lines are used in the fault location algorithms to avoid the effects of mutual coupling in transmission lines and does not require the categorization of faults. The proposed algorithm is verified on a simulation model of 220 KV transmission lines in Simulink (Matlab). The simulation results proved the accuracy and effectiveness of the proposed algorithm.