Projeto de um subsistema para a transferência de carga para usinas de microgeração fotovoltaica.

Abstract

Electricity distribution companies are, every year, improving their electricity distribution systems. This fact is proven by the continuous reduction that their power quality indices have been showing in past years. These indices are the ones that represent the frequency and the length of the interruptions in the electricity supply. The fact is that a continuous electricity supply without interruption will not so soon be a reality. Another important point considered along this study is the steady growth in the use of renewable energy sources, one of them the photovoltaics, where studies are presented pointing at an expressive increase in the use of this technology. Thus, this study works for a development of an auxiliary system that is responsible to provide electricity for the consumer when there is an interruption in supply from the distribution company, whatever the reason is. This system will make use of the photovoltaic power generation existing structure, adding just a few extra components that will make possible to transform a system originally connected to the electricity distribution system in an isolated system. The intention is to offer the vantages of both systems to the consumer, where this consumer may have the system connected to the electricity distribution, generating energy for own consumption and providing energy to the electricity distribution system and, at the same time, with the possibility to generate electricity isolated when the electricity supply is interrupted by the distribution company and the inverter was disabled by the anti-islanding function.