CONCEPÇÃO E IMPLEMENTAÇÃO DE UM SISTEMA DE MONITORAMENTO DAS GRANDEZAS ELÉTRICAS E TÉRMICAS EM MÓDULOS FOTOVOLTAICOS

Abstract

In recent years, photovoltaic modules (PVs) have proved to be an alternative for the production of electrical energy with low environmental impact at the installation site. This type of plant can have its reliability and useful life increased through the individual control and monitoring of its electrical and thermal magnitudes. For the reading and transmission of these quantities, a system that allows sending a high density of data over long distances is necessary, due to the high number of modules and their spatial distribution. This article presents a modular alternative for the measurement of thermal and electrical quantities in individual PV modules based on integrated digital sensors. In laboratory tests, the system showed average measurement errors for voltage and current quantities of 0.19% and 0.06%, respectively. During its field operation, a high density of samples was observed throughout the day, with an average response time of 439 ms.