Voltage and frequency control in smart distribution systems in presence of DER using flywheel energy storage system

The prerequisite for stable system frequency is to have instantaneous balance of demand and generation of active power. Inevitable energy oscillations due to presence of renewable energies in a smart grid, cause network frequency variations in power system. In this paper, we suggest a novel converter and control scheme for flywheel energy storage systems for the provision of energy balancing and grid frequency regulation in a smart grid consist of wind generators, PVs and typical thermal units. This scheme improves the system frequency response to disturbances. The validity of the proposed method is evaluated by computer simulation analyses using MATLAB Simulink.