Composite Demand-Based Energy Storage Sizing for an Isolated Microgrid System

This paper presents a comprehensive model for optimal energy storage system (ESS) design an isolated microgrid. The presented is mixed integer linear program (MILP) that considers seasonal varying generation (VG) demand, more specifically solar cell generator (SCG) SCG maintenance (failure and restoration) rates, practical operation of conventional (CG) while satisfying the required demand reserve. based on unit commitment (UC) to simulate real operations physical constraints CG units, power balance, reserve requirements. objective function aims at minimizing associated cost CG, namely, production (fuel), costs startup shutdown procedures, investment energy. proposed assessed case study consisting multiple SCGs in addition meet specific demand. showed ESS sizing when considering Li-Ion technology penetration 25% was average approximately 3 MWh 1.70 MW. Meeting requirements were two major determining sizing. Moreover, introducing substantially reduced operating system.