Utjecaj konstrukcijske izvedbe steznog sustava jezgre na smanjenje dodtanih gubitaka transformatora

professional thesis

• Author: Ivan Čolić
• Mentor: Željko Štih (mentor)
• Committee member: Bojan Trkulja (predsjednik povjerenstva)
• Committee member: Željko Štih (član povjerenstva)
• Committee member: Žarko Janić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; Zagreb
• Defense date and country: 2017, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Electrical Engineering

Abstract

Dodatni gubici su bitan čimbenik kod projektiranja energetskih transformatora. Osim što proizvođači nastoje smanjiti njihove iznose u cilju smanjenja cijene transformatora, posebna pažnje se pridaje i njihovoj lokalizaciji koji mogu prouzročiti lokalna pregrijavanja. Komercijalni 3D alati se sve više koriste kod računa dodatnih gubitaka, ali još uvijek ne u operativnim postupcima prilikom izrade projekata. Razvojem predprocesora specijaliziranih samo za transformatore, mogu se vrlo brzo dobiti gotovi i kompletno podešeni modeli u komercijalnim 3D alatima za koji su namijenjeni. Time se znatno skraćuje vrijeme koje se odnosi na crtanje i definiranje svih parametara u 3D alatu. Ti nekomercijalni predprocesori omogućuju da se rezultati 3D alata dobiju i u fazi projektiranja. U radu su 3D alatom MagNet izračunati gubici steznog sustava za različite konstrukcije steznika na 15 energetskih transformatora proizvedenih u tvrtki Končar Energetski transformatori d.o.o. Na kraju je dana je ekonomska analiza za razliku gubitaka dobivenih MagNetom.

Abstract (english)

Stray losses are an important factor in a large power transformer design. Besides the fact that manufacturers seek to reduce their amounts in order to reduce the total cost of transformers, special attention is given to their localization which may cause local overheating. Commercial 3D tools are increasingly used for additional losses calculation, but still not in design stages. The development of specialized preprocessor only for transformers makes it possible to quickly get ready and fully adjusted models in commercial 3D tools for which they are intended. This considerably reduces the time related to drawing and defining all parameters in the 3D tool. These non-commercial preprocessors allow to get the results of the 3D tools in design stage. In this thesis, calculations of clamping plate losses are dane with 3D tool MagNet for different construction on 15 power transformers manufactured in the company Končar Power Transformers Ltd. At the end of the thesis, the economic analysis is given.

• Keywords: transformatori
• Keywords (english): transformers
• Language: croatian
• URN:NBN: urn:nbn:hr:168:889572
• Study programme: Title: Postgraduate specialist Study in Transformers; Study programme type: university; Study level: postgraduate specialist; Academic / professional title: sveučilišni/a specijalist/specijalistica transformatora (sveučilišni/a specijalist/specijalistica transformatora)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2022-09-28 08:09:39