Thermographic Analysis of Photovoltaic Panels

The paper proposes processing and interpretation of the thermo-graphical images acquired on a grid-connected photovoltaic plant (20 kWp). Infrared analysis allows a reliable evaluation of the state of health of the plant and at the same time the detection of the actions needed of the maintenance. In particular the identification of possible differences between the strings and the rapid location of local hot spots, breakdowns or other problems are presented.