Arc fault detection and confirmation using voltage and current analysis
AssigneeHoneywell International Inc.
InventorsVijay Deshpande, Prashant Prabhu
Life of this patent
Estimating the term…
Abstract
An arc fault in an electrical circuit is detected by recording phase plane plot data of current versus voltage for at least one electrical cycle of an alternating current signal, and applying a phase plane plot arc fault monitoring algorithm to the phase plane plot data to determine whether an arc fault is present. An arc fault detection algorithm and an arc fault confirmation algorithm are employed to detect and confirm the presence of series and parallel arc faults in a circuit.
Claims33
A method of detecting an arc fault in an electrical circuit, comprising:
- recording phase plane plot data of current versus voltage for at least one electrical cycle of an alternating current signal;
- and
- applying a phase plane plot arc fault monitoring algorithm to the phase plane plot data to determine whether an arc fault is present.
An arc fault detector, comprising:
- a voltage monitoring module;
- a current monitoring module;
- an arc fault monitoring module operable to record phase plane plot data of current versus voltage for at least one electrical cycle of an alternating current power signal, and to apply a phase plane plot arc fault monitoring algorithm to the phase plane plot data to determine whether an arc fault is present.
A machine-readable medium with instructions stored thereon, the instructions when executed operable to cause a computerized arc fault detector to:
- record phase plane plot data of current versus voltage for at least one electrical cycle of an alternating current signal;
- and
- apply a phase plane plot arc fault monitoring algorithm to the phase plane plot data to determine whether an arc fault is present.
Dependencies are inferred from the claim text.