SYSTEMS AND METHODS FOR ARC FAULT DETECTION

摘要

In accordance with one aspect the present disclosure is directed toward a method for detecting arc faults on a power line. The method may include mon itoring power signals associated with a power line and filtering the power s ignals to produce a high frequency signal and a low frequency signal. A mask signal may generated based on the low frequency signal, and the high freque ncy signal may be analyzed to extract a broadband portion of the high freque ncy signal. A fault counter may be incremented if the magnitude of the broad band portion is approximately greater than a first threshold level. A fault counter may be decremented if the magnitude of the broadband portion is appr oximately less than the first threshold level. A trip signal is provided to a switching device associated with the power line if the fault counter excee ds a predetermined fault limit.