Análise do Desempenho da Coordenação Entre a Proteção Contra Perda de Excitação e os Limitadores de Subexcitação e de Estabilidade em Regime Permanente

Ivan P. FariaMatheus M. da Silveira


O trabalho desenvolvido propõe avaliar, através de simulações computacionais, o desempenho da proteção contra perda de excitação (ANSI 40) em geradores síncronos coordenada com o limitador de subexcitação (UEL) do regulador de tensão, observando os limites impostos pela curva de capabilidade do gerador e seu limite de estabilidade em regime permanente (do inglês Steady State Stability Limit - SSSL). Foi utilizado um modelo real de gerador síncrono aplicado no Sistema Teste Brasileiro de 9 Barras, implementados nos softwares ANAREDE e ANATEM. Utilizando estes softwares foram simulados eventos que poderiam causar a atuação da proteção contra perda de excitação. Sendo assim, foi possível observar os benefícios da coordenação da proteção 40 com o limitador de subexcitação, garantindo uma proteção mais efetiva, com melhor sensibilidade e, portanto, contribuindo com maior confiabilidade ao sistema elétrico.

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