| 摘要 |
<p>Disclosed are systems and methods of detecting arc discharge in a DC power system that can provide improved noise propagation immunity. The system includes at least two current sensors for monitoring at least two current outputs, respectively. The current sensors have reverse polarities, and are configured and arranged in parallel to provide a combined current output signal. The current sensors monitor the respective current outputs, which are provided for monitoring by the current sensors over at least two adjacent conductors. If arc discharge occurs at a location on a first conductor, then arc discharge (adjacent conductor crosstalk), having an arc current signature like that of the arc discharge on the first conductor, can occur at a location on the other adjacent conductor. The system can effectively cancel out such adjacent conductor crosstalk within a photovoltaic (PV) system, thereby improving the capability of an arc fault detection device for detecting arc discharge at the PV string level.</p> |
