Calculation for Loop automation on two outgoing-feeders 471&472 of Danang city using Opcoord sofware

Abstract

Nowadays, in order to increase the reliability of electrical distribution grid, various types of digital relay including protection characteristic integrated relays based on IEC and ANSI/IEEE standards, loop automation system using recloser, sectionalizer and automatic fault isolation have been widely used. However, many experts agree that there is still no optimal method in choosing and combining the appropriate guard devices to coordinate equipment protection. Our focus in this paper is to maximize the performance of the Danang electrical distribution grid in two outgoing-feeders 471 & 472 in District 3(E13) in both technical and economic viewpoints. We also use proper software Opcoord to calculate and model equipment protection characteristics on electrical distribution system and to quickly create relay installed data.