Grid Stability

As power systems worldwide shift their generation resource mix from conventional power plants to a high proportion of renewable resources, new issues arise for ensuring stable system operation. Traditionally, spinning conventional generators have provided system synchronous inertia. However, with increasing penetration of asynchronous resources, inertia declines. Synchronous inertia supports grid operation by supporting the balancing of supply and demand during normal operations and by stabilizing the grid as a whole during disruptions.