A strategy for power system stabilization by control‐effort and response‐time minimization

Abstract

A method is described for deriving a quasi-optimal feedback control scheme for stabilizing power systems. This is achieved by minimizing a functional which is a linear combination of response time and control effort. The transient response of a power system obtained using this control strategy is found to be superior to that achieved with a controller based on a linear regulator approach. This scheme, in a slightly modified form, is easily implemented in practice. The modification does not affect the effectiveness of the scheme to control transients. Simulation results are included.KEY WORDS Electric power system stabilization Reduced-order models Quasi-optimal feedback control Minimum response time and control effort