Análise da capacidade de hospedagem de geração distribuída em uma rede radial de distribuição

Abstract

Demand for electricity is increasing, and new types of generation are essential to supply the energy needs of contemporary society. However, the centralized generation model currently used, based in Brazil on hydroelectric dams, is expensive to expand and entails several environmental problems. These disadvantages, coupled with the growing environmental concern, drive both the implementation of distributed generation and investments in technologies used for generation from renewable sources, especially photovoltaic generation. The trend is that the implementation of photovoltaic distributed generation will grow even more in the coming years, which may cause major impacts on the grid. Therefore, studies are necessary to establish limits of new insertions of photovoltaic systems to the distribution networks, so that a good performance of the same is maintained. The definition of a photovoltaic distributed generation limit to be connected to the grid is called hosting capacity. Thus, this work aims to analyze the impacts associated with the photovoltaic generation connection at IFG Campus Itumbiara, focusing on calculating the hosting capacity of studied feeder in several scenarios, considering three study phenomena: allowed overvoltages, voltage unbalance and harmonic distortions. For this, the OpenDSS software was used, employing data obtained by local measurement in IFG and others provided by the power utility.