Análise do impacto dos ajustes de proteção dos relés antiilhamento de geradores síncronos distribuídos

Abstract

With the increase in the penetration of distributed generation in distribution systems, attention to distributed generators concerning anti-islanding protection has increased. Anti-islanding protection schemes for synchronous generators introduce the concept of the Non-Detection Zone. By altering the modeling of the loads connected to the generator, the protection settings of voltage relays, frequency relays, and frequency variation relays, which together form an anti-islanding protection scheme for synchronous generators, or the control mode of these generators between terminal voltage control or reactive control, the behavior of the non-detection zone for these variations can be observed. Consequently, it was possible to observe the impact that the relay settings and generator control, mainly, had on the non-detection zone, as well as to identify protection functions that are relevant or even redundant in possible scenarios for the system to which the synchronous generator is connected.