G - Physics – 01 – R
Patent
G - Physics
01
R
G01R 21/133 (2006.01) G01R 19/25 (2006.01) G01R 23/00 (2006.01)
Patent
CA 2190905
Line voltage and line current signals are sensed on a power line having at least one conducting path. The sensed line voltages and line currents are converted into a digital signal. A phase-to-neutral voltage signal and phase current signal are computed from the digital signal to thereby define a phase of the power line. An interval of orthogonality is determined from the sensed voltage and current signals, coinciding with passage of an integral number of cycles of a fundamental frequency reference signal which is computed from the computed phase-to-neutral voltage signal. A vector metering quantity is computed for the determined interval of orthogonality from the computed phase-to- neutral voltage signal and the computed phase current signal. The vector metering quantities to be computed may be identified and computed based upon an associated detent. The vector metering quantity is also computed based on an identified circuit topology.
Bullock Donald F.
Burt Arthur C.
Crittenden Curtis W.
Edge Ellen D.
Elmore David D.
Company General Electric
Craig Wilson And Company
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