Performance analysis of frequency regulation services provided by aggregates of domestic thermostatically controlled loads

This paper proposes a control method for allowing aggregates of thermostatically controlled loads to provide synthetic inertia and primary frequency regulation services the grid. The proposed framework is fully distributed basically consists in modification thermostat logic as function grid frequency. Three strategies are considered: first one, load aggregate provides by varying its active power demand proportionally rate change; second frequency; third two combined. performances solutions analyzed forecasted scenario electric system Sardinia 2030, characterized huge installation wind photovoltaic generation no coil combustible oil plants. considered composed domestic refrigerators water heaters. Results prove effectiveness approach show that, particular case heaters, contribution more significant positive variations. Finally, correlation between level penetration with respect total evaluated.