Title :
A traceable mains-frequency power standard
Author :
Corney, Andrew C.
Author_Institution :
Meas. Stand. Lab., Ind. Res. Ltd., Lower Hutt, New Zealand
fDate :
4/1/1999 12:00:00 AM
Abstract :
A mains-frequency power standard traceable to voltage and impedance standards has been realized. One-sigma uncertainties are 19 μW/W at unity power factor, and 22 μW/W at zero power factor. A power bridge balanced to 0.2% is augmented by fast Fourier transform (FFT) analysis of samples of the detector voltage, eliminating the influence of harmonics and drift in the test sources
Keywords :
bridge circuits; calibration; digital voltmeters; energy measurement; fast Fourier transforms; measurement uncertainty; power measurement; transfer standards; watthour meters; wattmeters; FFT analysis; balanced power bridge; current shunt; digital voltmeter; energy standard; impedance standards; inductive voltage divider; mains-frequency power standard; one-sigma uncertainties; resistive voltage divider; traceable standard; unity power factor; voltage standards; watt-hour meter calibration; wattmeter; zero power factor; Bridge circuits; Detectors; Fast Fourier transforms; Harmonic analysis; Impedance; Power system harmonics; Reactive power; Testing; Uncertainty; Voltage;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
