Compensação de reativos para um sistema de geração isolada visando controle de tensão

Abstract

This undergraduate final project presents the implementation of a three-phase isolated generation system, established by a self-excited induction generator with reactive power compensation, aiming to obtain a structure that guarantees, by means of controlling the reactive power flow through a compensator, the stability of the voltage levels at the generator terminals even when different loads are connected. It is discussed, through a bibliographical review, about induction generators, addressing the problem of their use in isolated systems regarding the voltage variation problem, and about reactive compensation, especially with regard to the use of a STATCOM, which represent solution to the problem. The voltage variation and the performance of the generation system for the reactive compensation in different operating scenarios were verified by conducting tests in both a simulation environment and laboratory prototypes. The experiments carried out proved the ability of a reactive compensator structure to solve the problem identified in isolated systems, acting in a way to guarantee the reactive power balance between generation and consumption, providing or absorbing the additional reactive power required by the load, therefore, ensuring that the generator continues to provide voltage at the desired levels.