Sizing of Battery Energy Storage System (BESS) for Inertia Response Support

The consequences of environmental issues such as global warming have led many countries around the world to focus on the reduction of carbon dioxide emission through increased integration of renewable energy sources (RESs) in power system. With this increased participation of the RESs, the conventional power plants (CPPs) are being replaced with renewable energy resources which do not provide inertia response (except some reserves must be maintained in the case of wind power plants). As a result, the power system is prone to frequency instability in the event of a sudden load/generator contingency. Utility-scale battery energy storage system (BESS) could provide additional inertia response support in the power system. In this work, a methodology is proposed for the sizing of BESS for inertia support. The energy storage capacity required to provide inertia support during a targeted load increase was estimated.