ACTIVE POWER MEASUREMENT UNCERTAINTY BUDGET MODELLING IN CASE OF HARMONICALLY DISTORTED VOLTAGES AND CURRENTS

Kiril Demerdziev, Vladimir Dimchev

Abstract

Harmonic distortion of electrical waveforms results in a need for instrumentation performance evaluation in non-sinusoidal conditions. This is especially challenging in case of power and/or energy measuring devices, because of their place in the regulated trade of electrical energy. The measurement uncertainty evaluation procedure commences with determination of influence factors, which are correlated to harmonic components’ magnitude and phase shift recording. For overall uncertainty budget modelling, a GUM based approach is implemented. The model validation and the uncertainty propagation, due to alteration of different signals’ parameters, is illustrated via real time measurements, conducted with high accuracy class measuring equipment.

Keywords

high order harmonics; measurement uncertainty; reference standard

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IMEKO-TC11-2022-19.pdf

DOI

10.21014/tc11-2022.19

IMEKO TC

TC11 - Measurement in Testing, Inspection and Certification

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