Frequency stabilization of an islanded microgrid using droop control and demand response

Microgrids (MGs) are attracting a significant amount of attention from researchers for their potential to increase grid reliability through the use of energy storage and local generation, making them ideal for incorporating renewable energy sources as well as smart grid applications. Much work has been done on frequency regulation of islanded MGs from generation-side management as well as through demand response (DR). This paper investigates frequency stabilization of islanded MGs through DR and generation-side management, using droop control on each, allowing them to share generation imbalances. This method proves to be effective by reducing transient time, lowering the frequency deviations, and preventing generators from exceeding their power ratings during disturbances. The MG modeled in this system consists of a synchronous generator and two full converter models to demonstrate transient stability in an MG during a sudden loss of renewable generation. Simulation results demonstrate the effectiveness of the proposed approach.