Comparison and Influence of Flywheels Energy Storage System Control Schemes in the Frequency Regulation of Isolated Power Systems

Increased renewable energy penetration in isolated power systems has a clear impact on the quality of system frequency. The flywheel storage (FESS) is mature technology with fast frequency response, high density, round-trip efficiency, low maintenance, no depth discharge effects, and resilience to withstand continuous charge-discharge cycling without lifetime degradation. These FESS properties allows effectively address problem. This study analyzes contribution reducing deviations an that combines diesel plant, wind farm, pump-storage hydropower plant based El Hierro system. approaches this analysis by comparing six different governor control schemes (GCSs). Of these GCSs, nonlinear proportional variant (NLP $_{\mathrm {V}}$ ) singular NLP scheme previously developed same researchers. Different governor’s parameter settings for GCSs were also compared, obtained from proposed tuning methodology considers generation distribution, impact, degradation diesel, hydraulic groups, flywheels. compared terms average deviation, Zenith Nadir difference, wear tear electromechanical elements Pelton turbine nozzles, flywheels cycles per hour, state charge. results show including considerably improves regulation. criteria have influence results, V offering relevant improvements deviations.