Application of Fuzzy Logic for Fault Detection and Classification in Six Phase Transmission Line

A fuzzy logic based fault detection and classification scheme has been proposed for six phase transmission line. The algorithm is based on the monitoring of fundamental voltage of all the six phases and the deviation of phase voltage and current phasor with respect to a predefined reference phase angle. The variations in the voltage and current phase angles post fault have been framed as linguistic variables and further mapped with the status (healthy or faulty) of the phases using a set of fuzzy rules. The proposed fuzzy logic based protection scheme has been tested for different fault scenarios with varying fault parameters. A performance analysis has been carried out which authenticates the suitability and quickness of the proposed protection.