Distributed Design of Local Controllers for Transient Stabilization in Power Grids

Abstract

Abstract In this paper, we develop a distributed method for designing local controllers that perform transient stabilization of dynamic response for deflections caused by contingencies in a large power system where multiple independent system operators exist and manage their corresponding generators. The system models associated with individual system operators should be private and be unavailable for deciding control policies of other system operators. We formulate the controller design problem where each controller is designed using its corresponding local system model and they achieve a desired local transient response performance. Our proposed method based on hierarchical state-space expansion enables us to solve the controller design problem and the resulting system satisfies the requirements. Through numerical simulations for the IEEJ EAST 10-machine power system, the effectiveness of our proposed method is verified.