Estratégias para estudos de recomposição de sistemas elétricos via análise de varredura em frequência.

Abstract

Traditionally, for power system restoration studies, electromagnetic transient simulations are carried out taking into account different system configurations. The impact of the presence or absence of circuits and equipments on the system as well minimal load restoration, need to be evaluated. Due to the large number of possibilities (different topologies) and switching events to be simulated, restoring studies can take a very long time. In the present work, a technique based on scanning in the frequency domain is applied to power system restoration studies. Its purpose is to quickly evaluate the system restoration due to different configurations. This reduces the number of time-domain simulations, reducing subjectivity analysis that translates into operational safety. The system behavior, when energizing transformers, transmission lines or when switching capacitive devices, is assessed using frequency domain analysis. All the inferences in the frequency-domain are validated using time-domain simulations performed with the Alternative Transients Program (ATP).