Abstract
This paper presents the traveling wave based fault location methods, named single-ended and double-ended. Both methods rely on measurements from inductive CTs and capacitive VTs (in this paper only current measurements are used). Focus was given on the building process of a MATLAB/Simulink model to evaluate these methods. Phase current signals are used in Clarke’s transformation for getting α and 0 components. In order to cover all fault types, three sets of Clarke components (with reference to all three phases) are used. After that, aiming to estimate the fault location on the transmission line, the discrete wavelet transform of the α and 0 current components has been performed. Finally, the accuracy of fault location on the transmission line is reviewed by varying various parameters such as fault type, fault location and fault resistance on a given power system model
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