A STUDY ON FAULT DETECTION TECHNIQUES AND CLASSIFICATION ALGORITHMS IN AN OVERHEAD TRANSMISSION LINES

Abstract

Transmission lines are very important , vulnerable and exposed part of power system. Continuity of power supply depends on fault free status of transmission lines. Therefore need is to device a robust fault detection and fault classification mechanism with digital relaying system , so as to distinguish between normal and faulty phases and further more to isolate the faulty lines from the rest of grid and further to carry the restoration work quickly .  This review provides thourogh overview of various signal processing tools for feature extraction from fault signal keeping FACTS-connected transmission lines considering cross-country and evolving faults . Various fault classification techniques have also been detailed in the context of their fault classification accuracy, memory requirement and computation time , long term depencies , vanishing gradient and receptive field. This literature survey would help researchers to get insight to select an appropriate technique for fault detection and classification in overhead power transmission lines.