A computer-controlled system for calibrating high voltage revenue metering systems under actual operating conditions of high voltage and sinusoidal/non-sinusoidal voltage and current waveforms

The development of a computer-controlled system for the calibration of high voltage revenue metering systems under actual operating conditions of high voltage and sinusoidal/non-sinusoidal voltage and current waveforms will be described. Measurements can be made at any power factor from zero lag through unity, at voltages up to 100 kV line-to-ground voltage and currents up to 2000 A. The magnitude and phase uncertainties (k=2) are estimated to be not more than 50 µW/VA and 50 µrad, and 100 µW/VA and 100 µrad for sinusoidal and non-sinusoidal conditions, respectively.