Distributed robust frequency regulation of smart power grid with renewable integration

This paper investigates distributed frequency regulation of multi-machine power systems with renewable integration. The key challenge is to completely compensate the uncertainties induced by renewable energy. We integrate different grid components to achieve robust frequency regulation: the battery is used to filter out high-frequency components of renewable energy, demand response is utilized to deal with their medium-frequency components and conventional synchronous generators are exploited to handle their low-frequency components. The proposed distributed controllers are based internal model principle and its induced stability is formally analyzed.