Method and apparatus for generalized arc fault detection

Details Method and apparatus for generalized arc fault detection Method and apparatus for generalized arc fault detection

2008-06-24

2008-06-24

Nguyen, Vincent Q (Department: 2858)

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

For fault location

C324S536000, C361S042000

Reexamination Certificate

active

07391218

ABSTRACT:
A method and an apparatus detect series and/or parallel arc faults in AC and DC systems. The method according to one embodiment inputs an AC current signal; extracts a fundamental component of the AC current signal and monitoring an amplitude variation profile for the fundamental component, thereby generating a first arc fault detection measure; detects non-stationary changes in the AC current signal applying at least one measure of order higher than one, thereby generating a second arc fault detection measure; and determines whether an arc fault exists based on the first arc fault detection measure and the second arc fault detection measure.

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