NANORREDES EM CORRENTE CONTÍNUA: PRINCIPAIS CONFIGURAÇÕES E UM CASO PRÁTICO APLICADO NA AMAZÔNIA

This article aims to provide an overview of the use of direct current electrical distribution grids, especially small-scale ones classified as nanogrids and microgrids. It presents a brief literature review and discusses various aspects of these network types, such as polarity and structures. Additionally, it highlights significant advantages of employing DC grids over alternating current grids. Furthermore, the article explores the potential use of DC networks for electricity supply in remote communities in the Amazon. It emphasizes a practical case study of an experimental real-scale DC nanogrid implemented in the testing area of the Grupo de Estudos e Desenvolvimento de Alternativas Energéticas(GEDAE) at the Universidade Federal do Pará (UFPA). This nanogrid was later improved and replicated in the field to provide electricity to twelve residences and a church along the Piramanha River on Ilha das Onças, municipality of Barcarena, state of Pará. The article evaluates the relevance of nanogrids as a feasible and satisfactory alternative for supplying energy to communities without access to conventional electrical grids, drawing on the experiences of the real case study. It also discusses the applicability of this approach to other remote communities in the Amazon.