Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – Of ground fault indication
Reexamination Certificate
2008-09-29
2011-11-29
He, Amy (Department: 2858)
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
Of ground fault indication
C324S512000, C361S042000
Reexamination Certificate
active
08067942
ABSTRACT:
A method for locating phase to ground faults in DC distribution systems. The method includes utilizing wavelet analysis using Multi-Resolution Analysis (MRA) as a signal processing tool for recognition of characteristic features in the voltage signal. The voltage signal contains characteristic information in the high frequency range above the switching frequencies of the PE converters which allows for localization of the fault.
REFERENCES:
patent: 4929901 (1990-05-01), Kimball et al.
patent: 6154036 (2000-11-01), Baldwin
patent: 2004/0042137 (2004-03-01), Wong et al.
Baldwin Thomas
Pan Yan
Ribeiro Paulo
Silveira Paulo
Steurer Michael
Florida State University Research Foundation
He Amy
Horton J. Wiley
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