Direktne i nulte sheme energetskih transformatora

undergraduate thesis

• Title (english): Direct and zero schemes of power transformers
• Author: Marko Ivanković
• Mentor: Ivica Pavić (mentor)
• Committee member: Ivica Pavić (predsjednik povjerenstva)
• Committee member: Ivana Damjanović (član povjerenstva)
• Committee member: Goran Grdenić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; Zagreb
• Defense date and country: 2019-07-12, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Electrical Engineering

Abstract

Glavni cilj ovog rada je upoznavanje s direktnim i nultim sustavom energetskih transformatora. U radu su najprije navedene neke općenite karakteristike transformatora. Opisan je njegov način rada i navedeni su neki od glavnih dijelova energetskih transformatora.
Prvo su izračunate direktne reaktancije i direktne sheme dvonamotnih transformatora. Kod određivanja nulte sheme proces je malo složeniji i nužno je paziti koji spoj je spojen na primaru, a koji na sekundaru.
Nakon dvonamotnih određene su i direktne, odnosno nulte sheme tronamotnih transformatora. Prilike u ove dvije vrste transformatora su vrlo slične tako da se sve spomenuto kod dvonamotnih transformatora može vrlo lako primijeniti na tronamotne.
Na samom kraju rada odrađena je i jedna posebna vrsta transformatora, a to su autotransformatori. Uz upoznavanje sa shemom autotransfomatora mogu se vidjeti i prilike u nultom i direktnom sustavu autotransformatora koje su pobliže objašnjene s navedenim izrazima i relacijama.

Abstract (english)

Main aim of this final thesis is to get acquainted with the direct and the zero energy transformer systems. Firstly , description of some features of the transformer is given. Secondly, I describe its principle of working and I have listed some of the main components of energy transformers.
First, direct reactance and direct schemes of two-windings transformers have been calculated. When determining the zero scheme, the process is a little more complicated and it is necessary to look at the compound that is connected to the primary and one that's connected to secondary.
After two-windings transfomers, we defined direct and zero schemes of three-windings transformers. Conditions in these two types of transformers are very similar, so all that is mentioned in two-windings transformers is very easy to apply to three-windings ones.
At the very end of the work we mentioned a special type of transformer, autotransformer. As we are getting acquainted with the autotransfomator scheme, we can see conditions of zero and direct energy system in autotransformer that are explained more briefly with the above expressions and relationships.

• Keywords: ekvivalentna shema; direktna shema; nulta shema; energetski transformator; namoti; autotransformator
• Keywords (english): equivalent scheme; direct scheme; zero scheme; power transformer; widings; autotransformer
• Language: croatian
• URN:NBN: urn:nbn:hr:168:899344
• Study programme: Title: Electrical Engineering and Information Technology; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka elektrotehnike i informacijske tehnologije (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka elektrotehnike i informacijske tehnologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2020-01-07 18:31:58