Nonlinear Excitation Control for Transient Stability of Multi–Machine Power Systems using Structure–Preserving Models

The approach adopted in this paper for the problem of transient stability of multi-machine power systems sees the entire network as the (structure-preserving) interconnection of the network components, described by well known models. These structure-preserving models preserve the identity of the network components and allow for a more realistic treatment of the loads. Our main contribution is the explicit computation of a control law which provides transient stabilization, i.e, prevents the system from loss of synchronism after a large perturbation. The theory is illustrated by means of simulation on a 3-machine power system.