The selection of battery chemistry significantly influences the optimal sizing of an energy storage system (ESS) for frequency regulation in a microgrid due to the distinct performance characteristics of different battery types. Frequency regulation requires the ESS to quickly absorb or inject power to maintain the microgrid's frequency within acceptable limits. Lithium-ion batteries, for example, have high power density and high energy density, meaning they can deliver large amounts of power quickly and store a significant amount of energy relative to their size and weight. This makes them well-suited for providing fast frequency response and handling short-term frequency fluctuations. However, their cost per kilowatt-hour (kWh) is typically higher than o....
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