Análise modal e controle seletivo em sistemas de potência com múltiplas máquinas.

Abstract

In this work, particular emphasis is given to power systems with one or more identical generator sets, using modal techniques. A new analytical technique based on modal control theory is developed and applied in a power system with only one set of identical generators to analyze the effect of any signal or signal combinations to be fed back through power system stabilizers. Next, a study using modal analysis and selective control is performed in linearized systems with identical multi-unit groups, taking into consideration system mode categories, resulting in reduced order models retaining only the mode categories of interest. This study is applied to control the oscillations of power systems with identical generator sets with and without dissimilarities in machine parameters and load distribution between identical generators.