6533b831fe1ef96bd129948a
RESEARCH PRODUCT
ARC FAULT DETECTION EQUIPMENT AND METHOD USING LOW FREQUENCY HARMONIC CURRENT ANALYSIS
G PriviteraAntonio CataliottiValentina CosentinoGiovanni Artalesubject
Settore ING-INF/07 - Misure Elettriche E Elettronichearc faults detection home protection photovoltaic systems electrical safety series arcs arc fault circuit interrupter (AFCI) harmonic analysis chirp-z transform (CZT)description
An arc fault detection circuit includes a current sensing circuit coupled to a line conductor carrying a current. The current sensing circuit operates to sense current and output data indicative of the sensed current. A processing circuit implements a frequency transform algorithm to transform the output data to frequency data in a low frequency range and with a high spectral resolution where a minimum short time observation window is concerned. The processing circuit identifies an arc fault condition on the line conductor by identifying differences in said frequency data between at least two subsequent observation windows and identifying characteristics which exceed thresholds.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2012-01-01 |