Method and apparatus for generalized arc fault detection
US7391218B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 10, 2006 |
| Grant date | Jun 24, 2008 |
| Priority date | — |
| Expiry date | May 29, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/14
- WIPO fieldMeasurement
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.