| 摘要 |
The invention relates to a method for detecting a series arc in a photovoltaic device operating with direct current, comprising N (N=1 or N>1) photovoltaic modules (100, 1, 2, 3) connected to a charging device (10) having a capacitive behavior for the modules, said method comprising: a) detecting, at the terminals of n modules from among the N modules (1=n=N), the change in the voltage over time; b) identifying a variation in voltage between a first area (A) having a stable voltage and a second area (B) having a stable voltage, for a duration of at least 5 µs that immediately follows said variation in voltage; and c) determining whether or not the variation in voltage is between a value Vmin that is greater than or equal to 0.2 V and a value Vmax that is less than or equal to 20 V, and a rise time for said variation is between a duration Tmin greater than or equal to 0.5 µs and a duration Tmax that is less than or equal to 5 µs. |
