Published Paper Details:

To ensure reliability of the power system distance relay should be blocked during power swing. However, if any type of fault occurs during a power swing condition, it should be identify by the relay and generate the trip command to clear the fault as soon as possible. . Available fault detection technique may fail to response during power swing condition because already large variation is observed in voltage and current signal before the fault. Since the nature of power swing and three phase fault are symmetrical, it is more challenging to detect three phase fault during power swing. In this paper, a Hilbert Hanga Transform and support vector machine based fault detection and fault classification technique during power swing condition is proposed.HHT is used for feature extraction of current signal in various condition and SVM is used for classification purpose .The proposed method is tested for various fault and swing condition in WSCC nine-bus system simulated in PSCAD/EMTDC.