Estudo de viabilidade para a aplicação de um sistema fotovoltaico isolado em repetidoras de sinal sem fio, para aplicação em sistemas de reconfiguração automática na rede de média tensão elétrica

Abstract

Considering a normal operation regime, a self-healing system in a distribution power system allows reducing losses, improving quality indicators and balancing loads. With the increasement of the communication /devices in the power systems, the development of system that use self-healing technologies become reliable. The smart grids were born with the combination of some power system features and the field of the information technology (IT). In self-healing system, one of the pillars of its implementation is the need for a reliable and stable communication network with an appropriate speed of data exchange according with the type of the automation system. This research presents a project of a signal repeater, powered by an off-grid photovoltaic system, for communication networks of an aerial distribution grid. The project of the photovoltaic-powered signal repeater aims to overcome some of the problems found in private communication infrastructures to self-healing systems of distribution grid, such as: difficulty in access to the power grid of the signal repeaters and the communication network performance. Among the solutions analyzed, the offgrid photovoltaic system presented better economic feasibility for feeding adversity over a distance higher than 617 meters, and technique, meeting the requirements of the project.