A Pattern Recognition Approach for Differential Protection Method to Detect Transformer Faults

Abstract: The differential relay is used for detecting the faults within the transformer. But, a conventional differential relay has many demerits. In recent times, the false counter of differential relay has been reported where it was not at all required. This brings urge among researchers for the development of advance classifier algorithm which clearly states about the faults and disturbances and helps to avoid the false tripping at times of disturbances. In this paper, Authors have used the approach based on pattern reorganization of all possible operating conditions of transformer and using support vector machine (SVM), the classification of faults and disturbances has been carried out. The proposed scheme gives good results as compared with conventional differential protection method and overall efficiency of the system found out to be 92.89% Keywords: Discrete Wavelet Transform, Daubechies Wavelet, Differential Protection, MATLAB Simulink, Support Vector Machine.