Dimensionamento e avaliação de custo de um sistema de microgeração fotovoltaica conectado à rede elétrica de distribuição

Abstract

The photovoltaic solar energy has been increasingly inserted in the brazilian energy matrix through the distributed micro and minigeneration of electric energy, supported by the Normative Resolution N° 482/2012 of the National Electric Energy Agency (ANEEL), which allowed the entry of generating units in the Electric Energy Compensation System. This work aimed the development of a photovoltaic project for distributed microgeneration of energy, explaining each stage of the project development and making an economic feasibility analysis, specifically for the Photovoltaic System in question. The photovoltaic project used a three-phase inverter, due to the form of connection to the power grid, and photovoltaic modules of 285 W of power. The installation power was 5 kW. It was also dimensioned the cabling of direct current (DC) and of alternating current (AC) parts of the system. The economic analysis was made, based on the net present value method, from the survey of all project expenditures with Photovoltaic System components throughout the lifetime of the solar panels including the economy in electricity bill paid by the consumer, having an initial investment of approximately R$ 34.000,00. The economic viability was obtained for the payment without a project bank financing around 16 years after the installation of the generator system and the consumer unit in the Electric Energy Compensation System.