| 摘要 |
PROBLEM TO BE SOLVED: To speedily detect an abnormality of a solar battery panel. SOLUTION: Generated (Pn) for every parallel branch at the time of solar power generation system installation is measured by a first measuring part 21, total power (PT) of every generated power measured at the part 21 is calculated by a first total power calculating part 22, and by calculating division Pn/PT of the obtained total power (PT) and the generated power (Pn) for every parallel branch, a coefficient determining part 23 obtains a coefficient (Kn) for every branch. When the operation of a solar power generation system is started later, generated power (PnD) for every parallel branch is measured by a second measuring part 24, and total power (PTD) is calculated by a second total power calculating part 25. A valve multiplying the total power (PTD) obtained by the part 25 and the coefficient (Kn) obtained by the coefficient determining part 23 is compared with the generated power (PnD) measured by the second measuring part 24 by a comparator part 26. At the time of PnD > constant × Kn × PTD, the presence of abnormality at one solar battery panel of the branch is judged and an abnormal signal is outputted from an abnormal signal output part 27. |
