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master's thesis
Pouzdanost energetskog transformatora
2015. urn:nbn:hr:200:242498
Zec, Krunoslav
Josip Juraj Strossmayer University of Osijek
Faculty of Electrical Engineering, Computer Science and Information Technology Osijek
Department of Power Engineering
Chair of Power Systems and Substations

Cite this document

Zec, K. (2015). Pouzdanost energetskog transformatora (Master's thesis). Osijek: Josip Juraj Strossmayer University of Osijek, Faculty of Electrical Engineering, Computer Science and Information Technology Osijek. Retrieved from https://urn.nsk.hr/urn:nbn:hr:200:242498

Zec, Krunoslav. "Pouzdanost energetskog transformatora." Master's thesis, Josip Juraj Strossmayer University of Osijek, Faculty of Electrical Engineering, Computer Science and Information Technology Osijek, 2015. https://urn.nsk.hr/urn:nbn:hr:200:242498

Zec, Krunoslav. "Pouzdanost energetskog transformatora." Master's thesis, Josip Juraj Strossmayer University of Osijek, Faculty of Electrical Engineering, Computer Science and Information Technology Osijek, 2015. https://urn.nsk.hr/urn:nbn:hr:200:242498

Zec, K. (2015). 'Pouzdanost energetskog transformatora', Master's thesis, Josip Juraj Strossmayer University of Osijek, Faculty of Electrical Engineering, Computer Science and Information Technology Osijek, accessed 09 March 2025, https://urn.nsk.hr/urn:nbn:hr:200:242498

Zec K. Pouzdanost energetskog transformatora [Master's thesis]. Osijek: Josip Juraj Strossmayer University of Osijek, Faculty of Electrical Engineering, Computer Science and Information Technology Osijek; 2015 [cited 2025 March 09] Available at: https://urn.nsk.hr/urn:nbn:hr:200:242498

K. Zec, "Pouzdanost energetskog transformatora", Master's thesis, Josip Juraj Strossmayer University of Osijek, Faculty of Electrical Engineering, Computer Science and Information Technology Osijek, Osijek, 2015. Available at: https://urn.nsk.hr/urn:nbn:hr:200:242498

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Metadata
TitlePouzdanost energetskog transformatora
Title (english)Power transformer reliability
AuthorKrunoslav Zec
MentorMarinko Stojkov (mentor)
Committee memberMarinko Stojkov (predsjednik povjerenstva)
Committee memberZvonimir Klaić (član povjerenstva)
Committee memberHrvoje Glavaš (član povjerenstva)
GranterJosip Juraj Strossmayer University of Osijek
Faculty of Electrical Engineering, Computer Science and Information Technology Osijek
(Department of Power Engineering)
(Chair of Power Systems and Substations)
Osijek
Defense date and country2015-10-07, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Electrical Engineering
Power Engineering
Abstract
U radu su opisani modeli mehanizama degradacije koji se izražavaju pomou razliitih parametara kvalitete a fokus je bio na degradaciji izolacijskog papira. U drugom poglavlju opisane su razliite metode odreivanja pouzdanosti transformatora, odnosno raunanja preostalog životnog vijeka transformatora. Najpouzdaniji nain odreivanja stanja izolacijskog papira je preko stupnja polimerizacije, što je i obraeno u 4.poglavlju. U treem poglavlju je opisan pojam stupnja polimerizacije, te razliite metode kojima se odreuje stanje izolacije (temperatura toplinskih toaka transformatorskog ulja, uzimanje uzoraka papira i odreivanje stupnja polimerizacije a obraena je i posredna metoda odreivanja stupnja polimerizacije pomou odreivanja furana u transformatorskom ulju, a spomenuto je da je koliina furana direktan pokazatelj stupnja polimerizacije). Pokazano je takoer da se korištenjem više paralelno spojenih transformatora poveava pouzdanost sustava na kojem su spojeni jer jedan uvijek služi kao rezerva. etvrto poglavlje daje realne primjere odreivanja preostalog životnog vijeka transformatora pomou stupnja polimerizacije i furan analize, te je prikazano stanje transformatorskog sustava Elektre Slavonski Brod.
Abstract (english)
This paper describes the mechanisms of degradation models which are expressed using various quality parameters and the focus was on the degradation of the insulating paper. The second chapter describes the various methods of determining the reliability of the transformer, and calculating the remaining lifetime of the transformer. The most reliable way of determining the condition of the insulating paper is through the degree of polymerization, which is discussed in fourth chapter. The third section describes the concept of the degree of polymerization, and various methods for determining condition of the insulation (hot-spot temperature of transformer oil, taking samples of paper and determining the degree of polymerization, also a indirect method of determining the the degree of polymerization by determining furans in transformer oil processed and it was mentioned that the amount furans is a direct indicator of the degree of polymerization). The paper also shows that the use of multiple parallel-connected transformers increases the reliability of the system to which they are connected as one always serves as a backup. The fourth chapter gives realistic examples of determining the remaining lifetime of the transformer using the degree of polymerization and furan analysis, and the condition of the transformer system of Elektra Slavonski Brod was described.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:200:242498
Study programmeTitle: Graduate University Study Programme in Electrical Engineering; branch: Communications and Informatics, Power Engineering
Course: Power Engineering
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka elektrotehnike (magistar/magistra inženjer/inženjerka elektrotehnike)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2016-06-29 09:06:40