Power system excitation and governor control design via time-scale decomposition

Abstract

Power system excitation and governor control design using time-scale decomposition and optimal control theoretic concepts are presented. A synchronous machine with an excitation system and a prime-mover is decomposed into slow and fast subsystems using the iterative separation of time scales. The slow subsystem model is employed as the design model. The effectiveness of the proposed controller is studied through digital simulation. The simulation results are compared with those obtained via the classical quasi-steady-state (qss) technique. The approach presented does not require an explicit knowledge of the perturbation parameter.