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undergraduate thesis
Celulozni izolacijski materijali u uljnim transformatorima
Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2019. urn:nbn:hr:235:550792
Lesičar, Katarina
University of Zagreb
Faculty of Mechanical Engineering and Naval Architecture

Institutional repository: Repository of Faculty of Mechanical Engineering and Naval Architecture University of Zagreb

Cite this document

Lesičar, K. (2019). Celulozni izolacijski materijali u uljnim transformatorima (Undergraduate thesis). Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:235:550792

Lesičar, Katarina. "Celulozni izolacijski materijali u uljnim transformatorima." Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2019. https://urn.nsk.hr/urn:nbn:hr:235:550792

Lesičar, Katarina. "Celulozni izolacijski materijali u uljnim transformatorima." Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2019. https://urn.nsk.hr/urn:nbn:hr:235:550792

Lesičar, K. (2019). 'Celulozni izolacijski materijali u uljnim transformatorima', Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, accessed 01 August 2024, https://urn.nsk.hr/urn:nbn:hr:235:550792

Lesičar K. Celulozni izolacijski materijali u uljnim transformatorima [Undergraduate thesis]. Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture; 2019 [cited 2024 August 01] Available at: https://urn.nsk.hr/urn:nbn:hr:235:550792

K. Lesičar, "Celulozni izolacijski materijali u uljnim transformatorima", Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, 2019. Available at: https://urn.nsk.hr/urn:nbn:hr:235:550792

Metadata
TitleCelulozni izolacijski materijali u uljnim transformatorima
Title (english)Cellulosic insulation materials in oil-filled power transformers
AuthorKatarina Lesičar
MentorVera Rede (mentor)
GranterUniversity of Zagreb
Faculty of Mechanical Engineering and Naval Architecture
Zagreb
Defense date and country2019-02-28, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Mechanical Engineering
Abstract
Izolacijski sustav ključni je dio svakog električnog uređaja i stroja. Kod transformatora, izolacijski sustav najčešće čini kombinacija tekućeg izolacijskog medija (mineralno ulje) i čvrste izolacije (papir, tvrdi papir i drvo). U ovom radu dan je pregled izolacijskih materijala na bazi celuloze koji se koriste u uljnim transformatorima. Drvo i papir su celulozni izolacijski materijali s izrazito dobrim mehaničkim svojstvima, lako se oblikuju u željene proizvode i jednostavno kombiniraju s drugim tekućim ili krutim izolacijskim materijalima. Dostupni su i relativno jeftini, biorazgradivi, netoksični i reciklabilni. S obzirom na sve navedeno, još dugo će biti prvi izbor u sustavu izolacije ulje-papir kod uljnih transformatora. U eksperimentalnom dijelu rada predložena su moguća rješenja problema koji se javlja pri izradi izolacijske barijere za metalne dijelove transformatora. Izolacijska barijera izrađuje se savijanjem tvrdog papira u traženi oblik. Preveliki elastični povrat i pucanje bridova barijera, što je dovodilo do električnog proboja izolacije, izbjegnuto je promjenom konstrukcije alata čime je postignuta tražena kvaliteta barijera.
Abstract (english)
Insulation system is a key part of every electrical device and machine. Transformer insulation system design usually consists of a combination of a liquid insulating medium (mineral oil) and a solid insulation (paper, hard paper and wood). This paper presents, an overview of the insulating material based on cellulose used in oil transformers. Wood and paper are cellulosic insulating materials with extremely good mechanical properties, easily shaped into desired products and combined with other liquid or solid insulating material. They are readily available but also relatively cheap, biodegradable, non-toxic and recyclable. In view of the aforesaid, the oil-paper insulation system will be the first choice for oil transformers for quite some time. The experimental part of the paper deals with the possibilities of finding, a potential solution to the problem that occurs in the preparation of insulation barrier for the metal parts of the transformer. The insulation barrier is made by bending the hard paper into the required shape. Oversized elastic return and cracking of the barrier edges, which lead to the electrical breakdown of the insulation, is prevented by changing the construction of the tool to achieve the desired barrier quality.
Keywords
Languagecroatian
URN:NBNurn:nbn:hr:235:550792
Study programmeTitle: Mechanical Engineering
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Embargo expiration date: 2021-02-21
Terms of useLicence In copyright icon
Created on2019-05-22 23:59:27