%0 Journal Article %T Accurate Fault Location Algorithm on Power Transmission Lines With Use of Two-end Unsynchronized Measurements %A DINE Mohamed %A SAYAH Houari %A LEMDANI Soufiane %J Journal of Electrical and Electronics Engineering %D 2012 %I Editura Universit??ii din Oradea %X This paper presents a new approach of fault location on power transmission line. This approach uses two-end unsynchronizedmeasurements of the line and uses the advantages of digital technology and numerical relaying which are available today and can easily be applied for off-line analysis. The approach is based on modifying the apparent impedance method using a very simplefirst-order formula. It is shown that the new method is independent of fault resistance, source impedances and pre-fault currents. In addition, the data volume communicated between relays issufficiently small to be easily transmitted using a digital protection channel. The proposed approach was tested via digital simulation using MATLAB. Applied test results corroborate the superiorperformance of the proposed approach. %K Fault location %K unsynchronized measurements %K communication %K MATLAB %U http://electroinf.uoradea.ro/images/articles/CERCETARE/Reviste/JEEE/JEEE_V5_N2_OCT_2012/Dine%20oct2012.pdf