An Adaptive Centralized Protection and Relay Coordination Algorithm for Microgrid

To meet the increased customer demands, microgrid evolved. The structure of changes dynamically due to intermittent nature renewable-based generation, status distributed generator and opening breakers for fault/maintenance. Hence, magnitude fault current is dynamic in nature. In order deal with these changes, this paper addresses an adaptive central controller-based protection relay coordination scheme, which revises settings (both radial looped configuration) every change topology. proposed algorithm, primary responds a immediately since individual relays are given level setting. For any abnormality network, location determined both via local controller (MCC). even though fails identify high impedance, MCC locates accurately isolates minimum faulty part. between carried out by time-graded manner based on algorithm. algorithm tested using Matlab built IEEE 33 bus distribution network.