An accurate fault detection and location on transmission line using wavelet based on Clarke's transformation

Abstract

This paper presents accurate fault detection and location using wavelet based on Clarke's transformation. This study was done using Clarke's transformation method to convert current phase (three phase) signal into a two-phase current alpha and beta (current mode). The proposed method introduced the mode current to transform the signal using discrete wavelet transform (DWT) and was utilized to obtain the wavelet transform coefficients. Analysis was also conducted for other mother wavelets. The most accurate parent was wavelet Db8, with the fastest time of detection and the smallest error, whereas the largest error was found in Coil4 parent wavelet. The result for proposed method was compared with Db4, Sym4, Coil4 and Db8 and found to be very accurate Streszczenie. W artykule opisano dokladną metode wykrywania awarii w sieciach przesylowych bazująca na falkowej transformacie Clarka. Sygnal trojfazowy jest przeksztalcany do postaci dwufazowej Za najbardziej sie do tego celu nadająca uznano falke Db8 z najszybszym czasem wykrywania i najlepszą dokladnością. Wyniki porownano z innymi typami falek. Dokladna metoda lokalizacji awarii w sieciach przesylowych bazująca na wykorzystaniu transformaty falkowej Clarka