Distributed coordination and control in combined AC-MT HVDC power grids

Abstract

This paper proposes a distributed coordination and control framework in combined alternating current (AC) and multi-terminal high voltage direct current (MT HVDC) power networks. The provably correct control strategy is designed to confront with exogenous disturbances, unknown load fluctuation and energy sources' contingencies and achieve desired control objectives in which AC frequencies are syn-chronized and power generation is shared among generators. A rigorous analysis of the control strategy is given. We also validate our proposed control scheme by a simulation.