Decentralized stabilizability conditions for large-scale electric power systems

In this paper, we address the stabilizability of large-scale power systems when in the presence of bounded-but-unknown uncertainty. Test conditions on a system are given such that when satisfied, the system is guaranteed L2-stabilizable via decentralized control. A multi-machine power system model is formulated to which these test conditions can readily be applied. An example is given in which a 9-bus 3-machine system is stabilized with decentralized control when in the presence of structural perturbations.