The rapid penetration of Renewable Energy Source based Distributed Generation (DG) in the conventional power grid scenario forms a new type of power system, the Microgrid. Microgrid reduces the emission of green house gas and the necessity of fossil fuels. Interfacing DG with the utility power supply has heightened the worry about the microgrid control and power sharing among multiple DGs. A control strategy with active power control is applied for power sharing among multiple DGs both in grid connected and autonomous mode of microgrid operation. The frequency of the microgrid is taken as a common signal among the multiple DGs for control over the power injected by DG. Hence real power-frequency (P-f ) droop control is applied for DGs. The control strategies for the purpose power sharing, power quality enhancement and stability analysis are evaluated with the help of MATLAB/SIMULINK platform.
Volume 12 | Issue 2