Tehnički vjesnik, Vol. 24 No. 2, 2017.
Izvorni znanstveni članak
https://doi.org/10.17559/TV-20151109231714
Grid fundamental harmonic measurement in presence of Gaussian frequency deviation using 2-bit flash A/D converter
Željko Beljić
; University of Novi Sad, Faculty of Technical Sciences, Trg Dositeja Obradovića 6, 21000 Novi Sad, Serbia
Vladimir Vujičić
; University of Novi Sad, Faculty of Technical Sciences, Trg Dositeja Obradovića 6, 21000 Novi Sad, Serbia
Dragan Pejić
; University of Novi Sad, Faculty of Technical Sciences, Trg Dositeja Obradovića 6, 21000 Novi Sad, Serbia
Matija Sokola
; High Technical School of Professional Studies, Školska 1, 21000 Novi Sad, Serbia
Zoran Mitrović
orcid.org/0000-0001-7660-0844
; University of Novi Sad, Faculty of Technical Sciences, Trg Dositeja Obradovića 6, 21000 Novi Sad, Serbia
Platon Sovilj
orcid.org/0000-0002-3274-9337
; University of Novi Sad, Faculty of Technical Sciences, Trg Dositeja Obradovića 6, 21000 Novi Sad, Serbia
Sažetak
The paper proposes a novel approach to the measurement of the power grid voltage and/or current fundamental harmonic, using stochastic digital measurement method (SDMM) and 2-bit flash A/D converters. The power grid frequency variation in the European interconnection has been found as Gaussian. The influence of the frequency disturbance on the results of fundamental harmonic measurements is examined in detail. As theoretical analyses are extremely complex due to a high nonlinearity and stochastic nature of the problem, simulation analysis is employed as the primary method for fast testing and confirmation of the paper hypothesis. The results of realistic simulations give the measurement uncertainties below 0,01 % and 0,013 %, for the measured grid voltage and current, respectively. Experimental validation has been carried out by comparison of the commercial instrument measurements and the measurements of SDMM based prototype instrument. It has been found that results are in accordance.
Ključne riječi
digital measurements; fundamental harmonic measurement; power grid; simulation; stochastic processes
Hrčak ID:
179859
URI
Datum izdavanja:
14.4.2017.
Posjeta: 1.857 *