Ubicación de fallas en líneas de transmisión en sistemas de potencia desbalanceados mediante la transformada de wavelet

Abstract

The present research shows a methodology for fault location in transmission lines in unbalanced electrical power systems through the wavelet transform. The methodology was tested in 9 buses IEEE test system, it used the ATPDraw software for generate the faults and acquired the data for analyze in Matlab, the data was measuring by PMU, and the PMU optimal location was deployment through GAMS. It was proposed some studies cases consider unbalanced loads, monophasic, biphasic and triphasic faults in different distances. The model used de voltage and current phasors in each phase in pre-fault and fault states, with this information the wavelet transform analyze the changes and reveals which element is in fault and the distance where it was occurs whit low error compared with original distance.