Simulação de micro-redes de energia elétrica com geração fotovoltaica e armazenamento de energia

• Autor(a) principal: Xavier, Gustavo Azevedo
• Data de Publicação: 2011
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: LOCUS Repositório Institucional da UFV
• Texto Completo: http://locus.ufv.br/handle/123456789/3603
• topic: Micro-redes; Energia fotovoltaica; Micro-grid; Photovoltaic energy; CNPQ::CIENCIAS AGRARIAS::ENGENHARIA AGRICOLA

In the present work it was simulated and evaluated the use of photovoltaicsolar energy and itsinbattery storage in systems called micro-grids. In the proposed micro-grid model, residential consumers owners of photovoltaic systems unite to other consumers without their owns generations units, so it is possible to trade the surplus generated energy. Different topologies of micro-gridswere studied and analyzed the return on investment in different situations. Stochastic data of radiation were simulated for the city of Viçosa/MG for the period of one year, that is considering the statistic behavior of a series of 20 of years. With simulated data and modeling of photovoltaic generators were calculated the output power of the solar panels. The loads of residentialconsumers were estimated by determining the electrical equipment installed and then was used a methodology for plotting the load stochastically as well, this was done in order to simulate with fidelity the load curve. Knowing the load and the amount of energy generated and considering the batteries fully charged at the beginning of the simulations, it was possible to perform the energy balance of the system. Knowing the amount ofthe excess energy at every moment, was calculated the cash flow of the microgrids and the economic analysis was done to study the feasibility of the system. The analysis showed that currentprices in Brazilprevent the use of solar photovoltaic energy. Analyzis were performed byvarying some economic parameters to determine when the investment becomesfeasible. Different aspects such as: strategic, tariff and legislation were analysed to check the possibility of such aspects to collaborate that photovoltaic systems in micro-grids become feasible.