Dynamic balancing for low inertia power systems

Since low inertia power systems include limited generation capacity and rotating inertia compared with large power systems, generators may be easily overloaded when big disturbances happen. Low inertia systems also serve large portions of nonlinear loads and dynamic loads, which may reduce the stability margin. Some local controllers such as droop and isoch controllers have difficulties to achieve system-level generation and load balancing. Automatic generation control is also not so helpful to improve the system-level stability of low inertia power systems due to its slow response speed. In this paper, a novel system-level dynamic balancing technique is proposed to balance generation and load in real-time while satisfying various operational constraints of low inertia systems. Case studies are utilized to show the effectiveness of the proposed technique. This technique has a great potential to be used in island microgrids, marine power systems, and isolated industrial facilities.