%0 Journal Article %T Accurate fault location algorithm on power transmission lines with use of two-end unsynchronized measurements %A Mohamed Dine %A Houari Sayah %A Tahar Bouthiba %J Serbian Journal of Electrical Engineering %D 2012 %I Technical Faculty of ?a?ak %R 10.2298/sjee1202189m %X This paper presents a new approach to fault location on power transmission lines. This approach uses two-end unsynchronised measurements of the line and benefits from the advantages of digital technology and numerical relaying, which are available today and can easily be applied for off-line analysis. The approach is to modify the apparent impedance method using a very simple first-order formula. The new method is independent of fault resistance, source impedances and pre-fault currents. In addition, the data volume communicated between relays is sufficiently small enough to be transmitted easily using a digital protection channel. The proposed approach is tested via digital simulation using MATLand the applied test results corroborate the superior performance of the proposed approach. %K fault location %K unsynchronized measurements %K communication %K MATLAB %U http://www.doiserbia.nb.rs/img/doi/1451-4869/2012/1451-48691202189M.pdf