Decentralized nonlinear controller design for multimachine power systems via backstepping

In this paper, a backstepping-based decentralized control scheme is proposed for transient stability enhancement of multi-machine power systems. The design is based on two stages: First, an equivalent single-machine infinite-bus model (SMIB) is developed with respect to each machine. Then, apart from each SMIB model, a decentralized nonlinear control scheme based on a backstepping technique is designed which guarantees asymptotic stability of the overall interconnected power system. Some simulation results demonstrate the effectiveness of this approach.