Eigenvalue and eigenvector sensitivities applied to power system steady-state operating point

This paper proposes techniques used in finding a power system operating point that is both economically optimal and stable in the small-signal sense. To make the system small-signal stable, we should choose a power system operating point such that changes in system state variables due to small disturbances die out quickly. Thus, we need to know how changes in the power system operating point affect the linearized system´s eigenvalues, i.e. the eigenvalue sensitivities. Methods to compute eigenvalue and eigenvector sensitivities are discussed.