Teorija realnog integrisanog merila harmonika

Autor: Antić, Boris
Přispěvatelé: Vujičić, Vladimir, Župunski, Ivan, Kovačević, Dragan, Milovančev, Slobodan, Mitrović, Zoran
Jazyk: srbština
Rok vydání: 2013
Předmět:
Zdroj: CRIS UNS
Универзитет у Новом Саду
Popis: Jedan od najvažnijih parametara kvaliteta električne energije udistributivnoj mreži je harmonijski sastav naponskih i strujnihsignala. U disertaciji je razmatrano integrisano merilo harmonika,na principu stohastičke rezonance. Uopštenje postojećeg teorijskogmodela rada merila, ostvareno je ukidanjem pojedinih pretpostavki oidealizovanim uslovima rada: idealni intervali merenja, poznata inepromenljiva osnovna učestanost, idelane diterske sekvence. Naosnovu teorijske analize, simulacija i praktičnih merenja, date suprocene reda veličine za svaku od navedenih grešaka. Na kraju je datošest preporuka za modifikaciju hardvera i načine obrade rezultatamerenja, koje mogu značajno poboljšati metrološke performansebudućih generacija ovih merila.
One of the most important power quality indicators in power grids is theharmonic composition of voltage and current signals. In this thesis anintegrated harmonic instrument has been considered, which operates on theprinciple of the stochastic resonance. Generalization of the existingtheoretical model of the instrument was realized by terminating severalidealistic assumptions: perfect measurement intervals, known and stablefundamental frequency, ideal dithering sequences. Based on the performedtheoretical analysis, simulations and practical measurements, estimates havebeen given for each of the measurement error sources. Finally, sixrecommendations were given for the modification of the hardware and theresults processing in order to achieve significantly better metrologicalperformances in future generations of this instrument.
Databáze: OpenAIRE