Multi-Machine Power System Stabilization Control by Robust Decentralized Controller Based on Optimal Sequential Design

This paper proposes a robust decentralized controller based on optimal sequential design. The proposed controller can directly consider the inter-area oscillation mode on design phase. Further, the sequential procedure is applied to design for robust controllers in consideration of other controllers. The best design sequence of the controller is decided by using the condition number. The effectiveness of the proposed controller is demonstrated by comparing it with conventional controllers. Damping of many oscillations for a multi-machine power system is demonstrated through simulations, which considered a three line-to-ground fault for power system disturbance