Real-Time Implementation of a New Multifunction Relay

Abstract

This paper aims to design and building a New Multifunction Relay (MFR) by using the Arduino MEGA. It is used to provide protection against many abnormal conditions that may occur in the power system. The MFR contains two functions: firstly, are designing an inverse Overcurrent relay, and the other is an Over/Under voltage Relay based on the IEC 60255-151 standard and IEEE 1159 standard respectively. The GUI is designed by using the MATLAB environment to provide a platform of the relay. The proposed MFR showed accuracy results, Low costs, fast response, and very small error rate.