<p>Jedan od najvažnijih parametara kvaliteta električne energije u<br />distributivnoj mreži je harmonijski sastav naponskih i strujnih<br />signala. U disertaciji je razmatrano integrisano merilo harmonika,<br />na principu stohastičke rezonance. Uopštenje postojećeg teorijskog<br />modela rada merila, ostvareno je ukidanjem pojedinih pretpostavki o<br />idealizovanim uslovima rada: idealni intervali merenja, poznata i<br />nepromenljiva osnovna učestanost, idelane diterske sekvence. Na<br />osnovu teorijske analize, simulacija i praktičnih merenja, date su<br />procene reda veličine za svaku od navedenih grešaka. Na kraju je dato<br />šest preporuka za modifikaciju hardvera i načine obrade rezultata<br />merenja, koje mogu značajno poboljšati metrološke performanse<br />budućih generacija ovih merila.</p> / <p>One of the most important power quality indicators in power grids is the<br />harmonic composition of voltage and current signals. In this thesis an<br />integrated harmonic instrument has been considered, which operates on the<br />principle of the stochastic resonance. Generalization of the existing<br />theoretical model of the instrument was realized by terminating several<br />idealistic assumptions: perfect measurement intervals, known and stable<br />fundamental frequency, ideal dithering sequences. Based on the performed<br />theoretical analysis, simulations and practical measurements, estimates have<br />been given for each of the measurement error sources. Finally, six<br />recommendations were given for the modification of the hardware and the<br />results processing in order to achieve significantly better metrological<br />performances in future generations of this instrument.</p>
| Identifer | oai:union.ndltd.org:uns.ac.rs/oai:CRISUNS:(BISIS)83679 |
| Date | 27 June 2013 |
| Creators | Antić Boris |
| Contributors | Vujičić Vladimir, Župunski Ivan, Kovačević Dragan, Milovančev Slobodan, Mitrović Zoran |
| Publisher | Univerzitet u Novom Sadu, Fakultet tehničkih nauka u Novom Sadu, University of Novi Sad, Faculty of Technical Sciences at Novi Sad |
| Source Sets | University of Novi Sad |
| Language | Serbian |
| Detected Language | English |
| Type | PhD thesis |
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