Procjena stanja transformatora temeljena na analizi eksploatacijskih uvjeta i rezultata dijagnostičkih ispitivanja

professional thesis

• Title (english): Power transformer condition assessment based on exploitation conditions and diagnostic testing results analysis
• Author: Željko Kranjčec
• Mentor: Tomislav Župan (mentor)
• Committee member: Bojan Trkulja (predsjednik povjerenstva)
• Committee member: Tomislav Župan (član povjerenstva)
• Committee member: Željko Štih (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; (Department of Electrical Engineering Fundamentals and Measurements); Zagreb
• Defense date and country: 2022-11-04, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Electrical Engineering; Power Engineering

Abstract

Ovaj specijalistički rad pod naslovom „Procjena stanja transformatora temeljena na analizi eksploatacijskih uvjeta i rezultata dijagnostičkih ispitivanja“ bavi se analizom dostupnih podataka o pogonskim uvjetima u kojima promatrani transformatori rade i analizom dostupnih rezultata dijagnostičkih ispitivanja. Rezultati ispitivanja i pogonski uvjeti uspoređeni su s propisanim iznosima i preporukama. Kreirani su trendovi na temelju kojih se nastoji doći do preciznije prognoze daljnjih kretanja rezultata ispitivanja, te utvrditi uzrok njihovih odstupanja. Analizirani su rezultati tvornički obnovljenih energetskih transformatora. Iznesena je sveukupna procjena stanja pojedinog energetskog transformatora. Izneseni su stavovi glede poboljšanja aktivnosti održavanja promatranih energetskih transformatora i kvalitetnijeg upravljanja imovinom sa sigurnosnog i ekonomskog stajališta.

Abstract (english)

This postgraduate specialist paper entitled "Assessment of the condition of transformer based on the analysis of operating conditions and results of diagnostic tests" deals with the analysis of available data on the operating conditions the observed transformers are working under, and the analysis of available results of diagnostic tests. Test results and operating conditions were compared with prescribed values or recommendations. Trends have been created; based on which an attempt is made to arrive at a more precise forecast of further trends in test results, and to determine the cause of their deviations. The results of refurbished power transformers were analyzed. An overall assessment of the condition of an individual power transformer was presented, as well as views regarding the improvement of the maintenance activities of the observed power transformers, and better asset management from a safety and economic point of view.

• Keywords: hidroelektrana; energetski transformator; održavanje; izolacija; temperatura; ispitivanja; transformatorsko ulje; analiza rezultata
• Keywords (english): hydropower plant; power transformer; maintenance; insulation; temperature; diagnostic tests; transformer oil; result analysis
• Language: croatian
• URN:NBN: urn:nbn:hr:168:469411
• 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: Access restricted to students and staff of home institution
• Created on: 2022-11-24 09:14:33