23rd IMEKO TC 4 International Symposium and the 5th Chinese Conference on Electromagnetic Metrology Technical (IMEKO TC4 2019)

141 / 2019-02-06 22:23:13

Evaluation the Uncertainty Influence Depends on Harmonic Voltage Distortion for Precision Power Measurements

electric power, precision measurements, uncertainty, Total Harmonic Distortion, voltage harmonics distortion

Plenary track > Power and Energy Measurements

This paper deals with some problems concerning the evaluation of uncertainty depends on harmonic voltage distortion for precision electric power measurements and its further influence on evaluation expanded uncertainty of electric power measurements on National standard of electric power and power factor units of Ukraine. In experimental study cases the authors have modulated harmonic voltage distortions and evaluated the uncertainty depends on it. The paper presents the theoretical framework of the problem as well as the results of measurements, which illustrate the presence of the disturbing voltage harmonics in the low harmonics order such as 3rd, 5th, 7th, 9th, 11th and 13th.