Dimensionamento de potência de geração fotovoltaica visando consumidores do grupo A

Abstract

Over the last few years to increase the comfort and quality of life levels has become a priority to most people, which leads to the electrical energy's demand escalation and, consequently, to the energy costs raising. In this context the consumers are enhancing their comprehension on energy tariff aiming to minimize the amount of money spent on electricity. This work proposes the analysis of electric consuming profile in each Federal Institute of Goiás (IFG), presenting modifications with the intent to reduce the total energy price in each campus through the contracted energy tariffs' evaluation. The proposed methodology analyses the demand contracted by each campus and its power consumption profile to conclude whether the contracts match the real power need or not. It is important to point out that some campuses already have, and others have plans to install photovoltaic generation systems, therefore the approach also needs to evaluate the economic viability of each enterprise and estimate the projects generating capacity so the output power is consistent to the campus power consumption. Taking into account these points, the proposed method analyses each campus' energy tariff, through a computational routine developed for this purpose, and calculates the annual energy cost; furthermore, the scenarios considering all tariff structures and generated power are calculated, therefore the user can pick the best option to reduce the total price. The study verifies the advantages of changing the contracted demand on campuses Itumbiara, Jataí and Valparaíso and validates the contracted demands on the other IFG campuses, while the tariff structure in every campus should be kept as it is (seasonal green). Moreover, the best economic results for installing photovoltaic generation are obtained when the system is designed for auto consumption, however, depending on the availability of resources to invest, systems with higher generation capacity may be applied.