Intentional islanding of microgrid

Abstract

Reliability and sustainability of power supply between already existing power network and Microgrid (MG) having DGs is ensured by both the grid connected and islanded mode of operations. The selection of mode of operation of a MG is based on technical and economic factors. The intentional islanding of the MG depends on the prevailing operating condition of grid and MG. These conditions are sensed at point of common coupling (PCC) and accordingly the switching to the mode is performed. This paper presents the detection and evaluation of operating conditions of the network at PCC, and switching to Islanded mode on the need. The conditions have been categorized for the decision of intentional Islanding. The cases under each category have been simulated on Real Time Digital Simulator (RTDS®). The results have also been analyzed.