Analysis of frequency control in isolated microgrids

The gap between supply and demand is never constant and is reflected as frequency deviation in power systems. Recent integration of renewable energy sources as distributed generators at the distribution level increase complexity in terms of control and stability. These distributed generators along with local load and storage constitute microgrids. Various control schemes and strategies with distributed storage is discussed in greater detail. Droop control for power electronic based distributed generators for frequency and voltage control in low voltage microgrid is also presented. The advantages and limitations of the various control strategies is discussed.