| 摘要 |
PROBLEM TO BE SOLVED: To provide a method capable of exactly detecting minor abnormality of a photovoltaic power generation system.SOLUTION: The abnormality detection method for solar battery includes a step for acquiring a power value or current value of output power from a solar battery 2; a step for acquiring an amount of solar radiation; a step for calculating a correlation factor between the power value or current value and the amount of solar radiation; and a step for determining the solar battery 2 to be abnormal when the correlation factor is smaller than a predetermined threshold value.SELECTED DRAWING: Figure 1 |
