Sistema de recomposição automática de energia elétrica alimentada a partir do uso de baterias estacionárias

Abstract

Although electric utility companies increasingly strive to comply with the energy quality indicators required by the National Electric Energy Agency, it is a fact that there are regions, both in Brazil and elsewhere, where power outages have caused dissatisfaction among the population. The objective of this study is to present a product, still under development, capable of mitigating this problem through the organization and integration of various electrical components available in the market. This prototype, when organized, constitutes an emergency automatic power restoration circuit, powered by the use of stationary batteries, aligning with the theories of medium and low voltage electrical microgrids, enabling the provision of emergency loads (Costa et al., 2018; Felipe, 2022; Ju et al., 2018; Silveira Júnior, 2022; Li et al., 2017). The product was implemented in a residence to provide partial power during interruptions from the electric utility company, aiming to ensure uninterrupted supply of essential appliances for the user's well-being, health, and communication. To refine the device sizing, the quality indicators DEC and FEC of each region are used, enabling mathematical modeling to approximate the actual consumption of emergency loads at the consumer unit. This is crucial for storing and using accumulated energy more efficiently. This device resembles an off-grid system, however, it is automated and its function is activated in case of power interruption. In conclusion, the importance of households having emergency systems that operate in an isolated and sustainable manner for users, such as those in need of home care attention, remote home office work, and others, is emphasized.