Synthesis of the adaptive excitation control system of powerful synchronous generator

Abstract

New promising excitation systems of powerful synchronous generators, which are operating in the interconnected power system, are considered. Based on general assumptions, a system of differential equations, transfer functions and a block diagram of excitation system, as the automatic control object, were obtained. Mathematical description of electromechanical transient processes for the emergency situations in the power system is very complicated and limited. In these cases, the efficiency of the excitation current regulator can be increased by using the combined algorithms of the simplex search, when, in the optimization process, the local efficiency function is approximated by a separable equation. Based on the expressions obtained, the synthesis of generator’s adaptive excitation control system and optimization blocks has been developed. The proposed scheme of adaptive system synthesis allows us to eliminate search errors. The results of synthesis shows that the transitional process of generator’s voltage is similar to the optimal.