Dispositivo para medir el descenso de potencia en una instalacion solar que comprende al menos una primera celula fotovoltaica conectada a una primera resistencia, unos mwedios de limpieza automatizados, al menos una segunda celula fotovoltaica, primeras y segundas resistencias conectadas respectivamente a las primeras y segundas celulas, un modulo de control, unos medios de calculo; procedimiento para medir decenso de potencia.

摘要

The invention is intended for the accurate, low-cost measurement of a power loss at a solar plant (17) caused by dirt. The device comprises: a first photovoltaic cell (1) for transforming solar energy into a first current (8); cleaning means (4) for cleaning the first cell (1); a second photovoltaic cell (2) for transforming solar energy into a second current (9); a first voltmeter (10) and a second voltmeter (11) for measuring the intensity of the first voltage (8) and the second voltage (9); and a control module (12) for comparing the measurements of the voltmeters (10, 11) and determining the power drop.