O impacto dos inversores ON-GRID na rede elétrica no sistema de geração distribuída

Abstract

This paper presents a study on the influence of On-Grid inverters on electrical grid, and their impact caused on the quality of distribute electrical energy. To provide a better understanding of the subject, it will be shown the Brazilian’s energy matrix and the growth of photovoltaic generation, as well as the operation of the main inverters for On-Grid systems found in current markets. By analyzing the quality of the electrical energy provided by clients, whom have microgeneration systems connected to the concessionaire and report problems of continuity in the generation, it is possible to identify that the microgeneration system itself was injecting voltages above the limits established by ANEEL. Thus, this sensitizes that it is the inverter’s protection system that interrupts the insertion of power in the grid. Due to these problems, this paper also aims to obtain subsides to help identify the causes of these problems and possible solutions that can mitigate these impacts on the electrical grid of the concessionaire.