A current-comparator-based system for calibrating active/reactive power and energy meters

From National Research Council Canada

DOIResolve DOI: https://doi.org/10.1109/TIM.1983.4315028
AuthorSearch for: 1; Search for: 1
Name affiliation
  1. National Research Council of Canada. NRC Institute for National Measurement Standards
SponsorSearch for: IEEE; Search for: NBS; Search for: URSI
FormatText, Article
ConferenceCPEM 82 Digest: 1982 Conference on Precision Electromagnetic Measurements, June 28-July 1, 1982, Boulder, Colorado, USA
Subjectautomatic voltage control; bridge circuits; capacitors; control systems; microcomputers; power measurement; reactive power; thermal factors; voltage-controlled oscillators; watthour meters
Abstract
A system for calibrating active/reactive power and energy meters under sinusoidal conditions using a current comparator bridge is described. Measurement can be made at any power factor from zero lag through unity to zero lead, positive or negative power, at 100 to 120 V, 1 to 5 A, and 50 or 60 Hz. The system features a digital oscillator, a thermal rms ac/dc voltage comparator, an automatically compensated capacitor for producing an accurate and stable reactive component, and a microcomputer for control and data reduction. The systematic uncertainty of the calibration system is estimated to be not more than 15 parts per million (ppm).
Publication date
In
  • IEEE Transactions on Instrumentation and Measurement 32, no. March 1 (1983): 147–149.
LanguageEnglish
NRC numberNRC-INMS-1804
NRC-INMS-4433
NPARC number5763984
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