Optimal setting automatic excitation controllers for synchronous generators

Abstract

At present, the power system of the Russian Federation is an active modernization of generator excitation systems. In this connection, there is the problem of choosing the new settings excitation controllers of various types to ensure effective damping of electromechanical oscillations. Various optimization techniques required objective functions, developed on the basis of the root and frequency criteria for evaluation ofparameters of the regulatory process for the proper functioning of the automatic excitation controller for synchronous generator (AEC SG), working in different scheme-regime situations. Produced practical study received AEC SG setup parameters to software and hardware complex RTDS (Real Time Digital Simulator) for program certification tests defined in Standard of System Operator of the Unified Power System. On the basis of performed measurements obtained after simulating different perturbations are determined optimal settings. It is considered the most sensitive and rapid methods for their production, based on a direct and more complex mathematical methods. The identified high-speed methods of search of optimal AEC SG parameters allow at changing grid settings to calculate values for the coefficients and time constants and thus in case of electromechanical oscillations to provide effective damping.