Localización de Fallas Mediante la Transformada Wavelet en Líneas de Transmisión

Abstract

Generally, failures caused in Electrical Power Systems (EPS) are characterized to be short duration and have large magnitude variations, for this reason if do not take proper corrective actions, these failures could be able to lead an entire collapse of the electrical system. Failures in transmission lines are often produced by technical and environmental reasons. In this context, the present paper proposes a practical application for the wavelet transform with regard to locate faults in electrical systems, specially applied on transmission lines by using the principle of traveling wave. For that, an algorithm was developed in MatLab, which recreates and next determines the distance to the failure happened. Finally, this algorithm has been tested in three real failure events of the Ecuadorian electrical system, and the results show that this tool has an excellent accuracy rate to locate transmission lines failures, 91% in average for the simulations done.