Abstract
In this paper, we develop a distributed design method for local controllers that perform transient stabilization of dynamic responses for deflections caused by contingencies in a large power gird. We suppose that multiple independent system operators exist and manage their corresponding generators in the power system. It is assumed that the system model associated with individual system operators should be unavailable for deciding their control policies and we formulate the local controller design problem where each controller is designed using its corresponding local system model and they achieve a desired transient response performance. Our proposed method based on hierarchical state-space expansion enables us to solve the distributed design problem and the resultant closed-loop system satisfies the requirements. Through numerical simulations for the IEEJ EAST 30-machine power system, the effectiveness of our proposed method is verified.
