DC arc detection and photovoltaic system profile formation system

摘要

An arc detection method includes classifying whether there is an arc fault in the power system by labeling the interval range as a candidate interval range if a size spectrum of the interval range meets first criteria for each of a plurality of interval ranges of a current frame of a signal; determining a number of candidate interval ranges in the current frame; designating the number of candidate interval areas as candidate cluster interval areas if the number of candidate interval areas exceeds a minimum cluster size; determining whether the candidate cluster interval range is also a candidate cluster interval range of a previous frame of the first signal for each of the candidate cluster interval ranges, and identifying the current frame as a candidate frame and incrementing a candidate frame count, if so; and determining that there is an arcing fault in the power system if the candidate frame count exceeds a candidate frame count threshold.