magistrsko delo
Selma Vukalić (Author), Vito Logar (Mentor)

Abstract

Magistrska naloga se osredotoča na razvoj analitičnega modela elektroobločne peči. Glavni cilj naloge je ustvariti poenostavljen model za oceno temperature taline v elektroobločni peči, ki se uporablja pri procesu taljenja jekla, in sicer za zadnji del obratovanja peči, tj. fazo rafinacije. Zaradi visokih temperatur v peči, kjer se proces taljenja izvaja, ter zaradi načina izvajanja meritev temperature, se le-te ne izvajajo neprekinjeno. To pomanjkljivost skušamo rešiti z razvojem modela, ki omogoča dovolj natančno oceno temperature, s čimer zmanjšamo potrebo po pogostih merjenjih, ki privedejo do izgub energije, hkrati pa operaterjem peči omogočimo boljši vpogled v trenutno stanje v peči. Prvi del naloge se posveča modeliranju faze rafinacije, kjer je peč z vidika modela razdeljena na različna območja. Prehajanje energije med temi območji in kemijske reakcije so matematično opisane v obliki enačb. V drugem delu naloge je predstavljen optimizacijski algoritem simuliranega ohlajanja, ki se uporablja za določanje optimalnih parametrov modela elektroobločne peči. Ta pristop omogoča učinkovito prilagajanje modela realnim pogojem in povečuje natančnost ocene temperature. V zaključnem delu naloge so predstavljeni rezultati in vrednotenje razvitega modela. Poleg tega se obravnava možnosti nadaljnjega dela na tem raziskovalnem področju in razpravlja o potencialnih izboljšavah ter prilagoditvah modela, ki izhajajo iz pridobljenih rezultatov.

Keywords

elektroobločna peč;modeliranje;optimizacija;simulirano ohlajanje;faza rafinacije;magisteriji;

Data

Language: Slovenian
Year of publishing:
Typology: 2.09 - Master's Thesis
Organization: UL FE - Faculty of Electrical Engineering
Publisher: [S. Vukalić]
UDC: 621.365.2 (043.3)
COBISS: 190384899 Link will open in a new window
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Downloads: 10
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Other data

Secondary language: English
Secondary title: Development of the analytical electric arc furnace model for the refining phase using parameter optimization
Secondary abstract: The master thesis focuses on the development of an analytical model of the electric arc furnace. The main objective is to create a simplified model for the estimation of the melt temperature in the electric arc furnace used in the steel melting process for the last part of the furnace operation, i.e. the refining phase. Due to the high temperatures within the furnace where the melting process occurs, and the manner in which temperature measurements are conducted, they are not performed continuously. We aim to overcome this limitation by developing a model that provides sufficiently accurate temperature estimation, thereby reducing the need for frequent measurements that lead to energy losses. Simultaneously, this gives furnace operators a better insight into the current state of the furnace. The first part of this paper is devoted to modelling the refining phase, where, from the point of view of the model, the furnace is divided into different zones. The energy transfer between these zones and the chemical reactions are described mathematically in the form of equations. In the second part of this paper, we present the simulated annealing optimization algorithm, utilized for determining the optimal parameters of the electric arc furnace model. This approach facilitates the efficient adaptation of the model to real-world conditions, thereby enhancing the accuracy of temperature estimation. In the concluding section of this paper, we present the results and evaluation of the developed model. Furthermore, we discuss options for further work in this area of research and potential improvements and adaptations to the model arising from the obtained results.
Secondary keywords: Electric arc furnace;modeling;optimization;simulated annealing;refining phase;
Type (COBISS): Master's thesis/paper
Study programme: 1000316
Embargo end date (OpenAIRE): 1970-01-01
Thesis comment: Univ. v Ljubljani, Fak. za elektrotehniko
Pages: 1 spletni vir (1 datoteka PDF (XX, 50 str.))
ID: 23256030