Transmission Line Fault Classification Using Superimposed Components

This paper presents fault classification technique based on superimposed components of current signals. The classifier refers sequence networks of different fault type for developing classification logics. The superimposed sequences of current data are used to determine fault type and faulted phases that are selected through superimposed components of phase currents. This method is tested with different system conditions and effect of fault resistance, fault location, fault inception angle and load angle variation are studied. A two terminal 50 Hz system in Matlab®/Simulink™ environment is considered for simulation. The proposed algorithm is easy to implement in microprocessor based relay.