Análise dos impactos da implementação de sistemas de armazenamento de energia em instalações com geração distribuída fotovoltaica: estudo de caso no IFG - Itumbiara

Abstract

This work covers fundamental aspects that involve the generation of electricity through photovoltaic systems, from the dimensioning of the medium voltage distribution network to 13.8 kV, the installation wiring, the local substation, the installation load and a battery. The photovoltaic system connected to the network of the Federal Institute of Education Science and Technology Campus Itumbiara has 240 kWp, structural electrical data such as cabling and transformers were obtained through electrical plants referring to campus implementation, the load curve was measured locally and the data of the point of connection with the distribution network were provided by ENEL. The objective is design batteries in OpenDSS software able to store surplus photovoltaic energy in relation to the consumption of the load. And from stored energy perform demand management strategies aimed at a specific use of a grid-connected photovoltaic generation system with batteries to obtain an increase in self consumption and promote rational use of energy. In this study, the power, voltage and current of the simulated system are correlated through three base situations, the campus operating with nominal load only, the campus with nominal load and photovoltaic generation, and the campus with nominal load, photovoltaic generation and batteries. From the comparison of the electrical quantities, it is explained about the power supply for the battery bank load and the inability of the battery bank to absorb all the excess energy of the photovoltaic system and regulate the voltage.