Abstract :
Renewable resources can be used for the energy scarcity facing now. For the optimum usage of renewable
resources, system called micro grid. It can be operated in two modes. In the normal condition the micro grid is
connected to the utility grid. Current control is given during this mode to give preset power. In this mode, when there
is any fault or maintenance in the main grid the micro grid is islanded either to prevent spreading of fault to the micro
grid or to prevent accidents. When the intentional islanding is done, the control is given to maintain the voltage. Thus
constant control is given to the loads during this mode. Depending on the generation of micro grid side the intelligent
load shedding is implemented. The critical loads are maintained without any power quality issues. Simulation is
performed using MATLAB Simulink software. Simulation of controls during different modes, islanding detection
algorithm and intelligent load shedding are discussed in this paper.
Keyword :
Micro grid, Intentional Islanding, Intelligent Load Shedding, Islanding Detection Algorithm, Distributed generators