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master's thesis
Zaštita tercijara transformatora
Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing, 2016. urn:nbn:hr:168:418557
Bubnjar, Mateja
University of Zagreb
Faculty of Electrical Engineering and Computing

Institutional repository: FER Repository

Cite this document

Bubnjar, M. (2016). Zaštita tercijara transformatora (Master's thesis). Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing. Retrieved from https://urn.nsk.hr/urn:nbn:hr:168:418557

Bubnjar, Mateja. "Zaštita tercijara transformatora." Master's thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, 2016. https://urn.nsk.hr/urn:nbn:hr:168:418557

Bubnjar, Mateja. "Zaštita tercijara transformatora." Master's thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, 2016. https://urn.nsk.hr/urn:nbn:hr:168:418557

Bubnjar, M. (2016). 'Zaštita tercijara transformatora', Master's thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, accessed 20 December 2024, https://urn.nsk.hr/urn:nbn:hr:168:418557

Bubnjar M. Zaštita tercijara transformatora [Master's thesis]. Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing; 2016 [cited 2024 December 20] Available at: https://urn.nsk.hr/urn:nbn:hr:168:418557

M. Bubnjar, "Zaštita tercijara transformatora", Master's thesis, University of Zagreb, Faculty of Electrical Engineering and Computing, Zagreb, 2016. Available at: https://urn.nsk.hr/urn:nbn:hr:168:418557

Metadata
TitleZaštita tercijara transformatora
Title (english)Protection of tertiary winding transformer
AuthorMateja Bubnjar
MentorAnte Marušić (mentor)
Committee memberAnte Marušić (predsjednik povjerenstva)
Committee memberJuraj Havelka (član povjerenstva)
Committee memberTomislav Capuder (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Electrical Engineering and Computing
Zagreb
Defense date and country2016-07-05, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Electrical Engineering
Abstract
U radu je objašnjena razlika između tercijara i stabilizacijskog namota te je navedena njihova namjena i način djelovanja. Tercijar i stabilizacijski namot smanjuju nultu impedanciju transformatora, reduciraju treći harmonik napona te djeluju stabilizacijski u uvjetima nesimetričnog opterećenja. Za navedene namote dan je prijedlog štićenja od kratkog spoja i prenapona. Tercijari u Hrvatskoj uglavnom se ne terete, stoga se od kratkog spoja štite uzemljivanjem jednog izvoda. U slučaju da se tercijar tereti, može se primijeniti kapacitivno uzemljenje te je na provodne izolatore potrebno postaviti zaštitne šeširiće kako male životinje ne bi izazvale kratki spoj. Tercijar je najizloženiji sklopnim i prenesenim prenaponima, a njegova prenaponska zaštita izvodi se odvodnicima prenapona. U posljednjem poglavlju analizirani su kvarovi na tercijaru koji su se dogodili u transformatorskim stanicama u Zagrebu, Skopju, Osijeku i Turskoj.
Abstract (english)
This thesis explaines the difference between the tertiary and stabilization winding along with describing their purpose and working principle. Tertiary and stabilization winding reduce zero sequence impedance as well as third voltage harmonic and they have stabilizing effect in terms of unbalanced loads. For these windings the proposal of protection from short circuit current and overvoltages is given. Tertiary windings in Croatia are mainly not loaded, so they are earthed. If tertiary winding is loaded, capacitive earthing may be applied. Bushings must be covered with protective hats so small animals can not cause a short circuit. Tertiary winding is exposed to transferred and switching overvoltages and its protection is realized with surge arresters. The last chapter analyzes failures of the tertiary winding that took place in electrical substations in Zagreb, Skopje, Osijek and Turkey.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:168:418557
Study programmeTitle: Electrical Engineering and Information Technology
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka elektrotehnike i informacijske tehnologije (magistar/magistra inženjer/inženjerka elektrotehnike i informacijske tehnologije)
Type of resourceText
File originBorn digital
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Created on2018-02-06 08:04:29