A Multivariable Optimal Control System for a Generator

A new digital generator control system has been developed, which coordinates excitation and governing systems of a generator by using multivariable optimal control scheme on the basis of modern control theory. Control performance of the developed system was investigated with computer simulations and tested at a 200KVA pilot power plant with 3KV transmission lines. This paper first outlines the control system, next describes the control schemes including process models, optimal control algorithms, control sequence, and state estimation schemes, and finally shows its control performance obtained from the pilot plant tests and the computer simulations.