Identification of Overcurrent Relay Faults Using Backpropagation Neural Network

Abstract

Overcurrent relays are considered as the backbone for any protection system and any faults in overcurrent relays may lead to power system breakdown. However, the actual fault of a relay is usually known after the faulty relay is sent for a Root Cause Analysis which is time consuming. Thus, the aim of this paper is to identify the overcurrent relay faults using Backpropogation Neural Network based on the general faults obtained by visual inspection without going through the Root Cause Analysis. A systematic system is created using neural network and Graphical User Interface (GUI) so that an inexperienced user will be able to predict the actual fault without sending the relay to the manufacturer. This will not only expedite repairing time, improve system availability but also will be able to reduce the operating cost.