Análise de modelos de excitação de geradores distribuídos na viabilização do ilhamento intencional

Abstract

The aim of this document is to apply a methodology for the viability of the isolated operation of a distributed synchronous generator in the supply of a region after the failure of the utility. This will be possible through the choice of an excitation method that avoids the disconnection of the generator by the protections at the common coupling point between distributed generation and the utility's grid during the transient from parallel operation to isolated operation, in which the generator will control the entire voltage and frequency for the loads. To make the choice of excitation feasible, curves will be constructed relating the time of detection of isolated operation to the period required for the protections to disconnect the generator depending on the difference between generated and consumed power. With this, it will be possible to obtain a methodology that indicates the most practical excitation in maintaining the supply of energy to the loads, thus avoiding local blackouts.