Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Lumped type parameters
Reexamination Certificate
2007-08-14
2009-10-06
Nguyen, Vincent Q (Department: 2831)
Electricity: measuring and testing
Impedance, admittance or other quantities representative of...
Lumped type parameters
C361S079000
Reexamination Certificate
active
07598751
ABSTRACT:
Embodiments according to the present invention provide an Impedance-based Arc-Fault Determination Device (IADD) and method that, when attached to an electrical node on the power system and through observations on voltage, current and phase shift with a step load change, determine the effective Thevenin equivalent circuit or Norton equivalent circuit at the point of test. The device and method determine the expected bolted fault current at the test location of interest, which enables calculation of incident energy and the assignment of a flash-hazard risk category.
REFERENCES:
patent: 4517513 (1985-05-01), Brown
patent: 6449568 (2002-09-01), Gerrish
patent: 6466031 (2002-10-01), Hu et al.
patent: 7164275 (2007-01-01), Gasperi
patent: 7200500 (2007-04-01), Larsson et al.
patent: 7526392 (2009-04-01), Gasperi et al.
Gasperi, et al.; “Method for AC Powerline Impedance Measurement”; IEEE 2007; pp. 1-4.
Collins, Jr. Edward Randolph
Emanuel Randall J.
Smith Timothy Lee
Ballard Spahr Andrews & Ingersoll LLP
Clemson University Research Foundation
Duke Energy Carolinas, LLC
Natalini Jeff
Nguyen Vincent Q
LandOfFree
Impedance-based arc fault determination device (IADD) and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Impedance-based arc fault determination device (IADD) and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Impedance-based arc fault determination device (IADD) and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4102331