The analysis of SSR may be performed in several different ways, depending on the magnitude of the disturbance and the purpose of the study. The goal here is to examine the small disturbance behavior of a system in which SSR oscillations may exist. Therefore, we present the equations to compute the eigenvalues of the power system so that the interaction between the network and the turbine-generator units can be studied.
Eigenvalue analysis requires that the system be linear. Since turbine-generator equations are nonlinear, the linearization of these equations is also explained in detail. The equations are also normalized to ease the problem of providing data for existing systems and for estimating data for future systems that are under study.
