Laboratorijska ocjena sustava zaštitnih premaza za primjenu u trafostanicama

master's thesis

• Title (english): Laboratory evaluation of protective coating systems for use in electrical substations
• Author: Jurica Žerjav
• Mentor: Sanja Martinez (mentor)
• Committee member: Sanja Martinez (predsjednik povjerenstva)
• Committee member: Helena Otmačić Ćurković (član povjerenstva)
• Committee member: Ljerka Kratofil Krehula (član povjerenstva)
• Granter: University of Zagreb; Faculty of Chemical Engineering and Technology; Zagreb
• Defense date and country: 2016-09-29, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Basic Technical Sciences; Materials

Abstract

Električna energija ključni je čimbenik za razvoj ljudske civilizacije te je potrebno uz današnji ubrzani razvoj svijeta osigurati pouzdanu opskrbu. Pouzdana opskrba može se postići kvalitetnom izradom elektroenergetskog sustava te uz redovito održavanje sustava. Jednostavan prijenos električne energije bez velikih gubitaka postiže se pomoću transformatora koji pripada u najvažnije dijelove svake trafostanice. Kvalitetna izrada i zaštita transformatora od korozije ključni su za prevenciju pojave korozije i kvarova. Najzastupljenija metoda zaštite transformatora od korozije je primjena sustava zaštitnih premaza. U ovom radu provedena su laboratorijska ispitivanja na različitim sustavima zaštitnih premaza koji se koriste za zaštitu transformatora. Odabrana su dva sustava premaza na bazi vode i dva na bazi otapala. Premazni sustavi su se na zaštitne pločice nanosili po recepturama koje se koriste u industriji. Laboratorijska ispitivanja provedena su u slanoj komori i pomoću elektrokemijske impedancijske spektroskopije. Pomoću dobivenih rezultata ispitivanja bilo je moguće laboratorijski ocijeniti različite sustave zaštitnih premaza koji se koriste za zaštitu transformatora od utjecaja atmosferske korozije, što je svrha ovog diplomskog rada.

Abstract (english)

Electricity is a key factor for the development of human civilization. World is changing fast, so it is necessary to ensure reliable supply of electricity. With regular maintenance and by creating a high-quality electric power system we can achieve reliable supply. Simple transmission of electricity without major losses can be achieved by using transformer. Transformer belong to the most important part of every substation. Quality production and protection transformer against corrosion are crucial for preventing corrosion and malfunctions. The most common method of protection transformer from the corrosion is application of protective coating systems. In this study we conducted laboratory tests on various systems of protective coatings which are used to protect transformers. Chosen are two system of paints, water-based paints and two solvent-based paints. Coating system on protective tiles are made by recipe which are used in industry. Laboratory tests were carried out in the salt chamber using electrochemical impedance spectroscopy. The purpose of this study is by using the test results, to evaluate different laboratory systems of protective coatings used to protect transformer from the effects of atmospheric corrosion.

• Keywords: korozija; premazni sustavi; trafostanica; transformator; slana komora; elektrokemijska impedancijska spektroskopija
• Keywords (english): corrosion; coating systems; substations; transformer; salt chamber; electrochemical impedance spectroscopy
• Language: croatian
• URN:NBN: urn:nbn:hr:149:865022
• Study programme: Title: Chemical Engineering - Graduate study; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka kemijskog inženjerstva (magistar/magistra inženjer/inženjerka kemijskog inženjerstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2017-11-24 11:30:35