Stephen R Kaprielian

US Patent:

20050171647, Aug 4, 2005

Filed:

Feb 2, 2004

Appl. No.:

10/770270

Inventors:

Steven Kunsman - Allentown PA, US
Ismail Jouny - Easton PA, US
Stephen Kaprielian - Worcester MA, US

International Classification:

G01R031/08

US Classification:

700293000

Abstract:

An apparatus, system, and method for detecting high impedance faults in electrical power lines using a composite high impedance fault detection system having a voter logic that samples the logical outputs from a plurality of independent high impedance detection systems and determines a high impedance fault if any two of the plurality of independent high impedance detection systems indicates a high impedance fault. Preferably, the plurality of high impedance detection systems include a wavelet based high impedance fault detection system having a first logical output, a higher order statistics based high impedance fault detection system having a second logical output, and a neural net based high impedance fault detection system having a third logical output. Preferably, each of the plurality of high impedance fault detection systems includes an independent high impedance fault detection application that independently detects a high impedance fault on the electrical power line.