PSO based Unit Commitment of a Hybrid Microgrid System

Scheduling of generators plays a crucial role in unit commitment problem of a deregulated power market. Due to the increased variation between supply and demand, the power produced by the conventional generators is not sufficient to meet the load demand. Renewable sources are added to the system, to provide additional power to avoid the generation and load imbalances. When the power demand is met, the extra power can be sold back to the grid to yield monetary benefits. In case if, the power demand is not met by the conventional sources as well as the renewable sources, the power is drawn from the grid to meet out the demand. Two scenarios have been considered, with and without the addition of renewable penetration into the system. When renewable sources are not added to the system, the fuel cost and maintenance cost is high due to the conventional generator which supports the demand. When renewable sources are added, the fuel and maintenance is considerably reduced. In this study, renewable sources are free of cost.