Summary:
This paper deals with the errors of electric energy metering devices as a result of distortions in the shape of the curves of voltage and current load. It is shown and proved that the errors in energy measurements depend on the design and the algorithms used in electricity meters. There are three main types of metering devises having different principles: inductive (electro-mechanical), electronic static, and digital electronic (microprocessor). Each of these types has its measuring features. Some devices take into account all the harmonic distortions and the constant component which occur in the network while others measure the power and energy values of the fundamental harmonic only. Such traits lead to the discrepancies in the readings of commercial electric energy meters of different types. Hence, the violations in the measurement system unity occur, and a significant error can be observed in the balance of transmitted/consumed electric energy.
Keywords: current, distortion, electric energy meter, harmonics, power quality
JCR Impact Factor and WoS quartile: 2,657 - Q3 (2019); 3,100 - Q3 (2023)
DOI reference:
https://doi.org/10.1007/s11708-018-0571-1
Published on paper: June 2019.
Published on-line: July 2018.
Citation:
I. Diahovchenko, V. Volokhin, V. Kurochkina, M. Špes, M. Kosterec, Effect of harmonic distortion on electric energy meters of different metrological principles. Frontiers in Energy. Vol. 13, nº. 2, pp. 377 - 385, June 2019. [Online: July 2018]
