Monitoring of the electrical parameters in off-grid solar power system

Aim of this work was to make a monitoring dedicated to off-grid installation. A laboratory set, which was built for that purpose, was equipped with PV panel, battery, charge controller and load. Additionally, to monitor electrical parameters from this installation there were used: LabJack module (data acquisition card), measuring module (self-built) and computer with a program, which allows to measure and present the off-grid installation parameters. The program was made in G language using LabVIEW software. The designed system enables analyzing the currents and voltages of PV panel, battery and load. It makes also possible to visualize them on charts and to make the reports from registered data. The monitoring system was also verified by a laboratory test and in real conditions. The results of this verification are also presented.