Optimiranje kotla transformatorja

Bojnec, Vid (author), Jerman, Boris (mentor)

Kotel energetskega transformatorja je v celotni življenjski dobi nekajkrat obremenjen z 98 % vakuumom, zato je ohišje izvedeno z ojačitvenimi elementi. V magistrskem delu smo obravnavali izvedbo transformatorskega kotla in njegovih konstrukcijskih elementov ter izvedli optimizacijo oblike kotla. Analiza obremenitvenega primera zajema določitev kritičnih območij in analitičen izračun napetostno-deformacijskega stanja. Cenilne funkcija je definirana kot masa kotla, ki smo jo matematično formulirali z znanimi parametri v odvisnosti od konstrukcijskih spremenljivk. Po analizi poznanih omejitev smo se pri optimiranju oblike kotla osredotočili predvsem na krajšo stranico. Rezultat optimizacijskega postopka je 17,6 % manjša masa kotla, ob sicer nespremenjenih obremenitvah.

• Language: Slovenian
• Keywords: optimiranje, cenilna funkcija, masa kotla, energetski transformator, napetostno deformacijsko stanje, konstrukcijske spremenljivke, podtlak
• Work type: Master's thesis/paper
• Organization: FS - Faculty of Mechanical Engineering
• Year: 2017
• PID: 20.500.12556/RUL-92949
• Publication date in RUL: 11.07.2017

BOJNEC, Vid, 2017, Optimiranje kotla transformatorja [online]. Master’s thesis. [Accessed 14 April 2025]. Retrieved from: https://repozitorij.uni-lj.si/IzpisGradiva.php?lang=eng&id=92949

Secondary language

• Language: English
• Title: Optimisation of transformers tank

Abstract

The housing of an energy transformer’s tank has a very robust structure, due to a load caused by 98% vacuum that can occasionally occur throughout its entire lifetime. This master’s thesis presents the study of a transformer’s tank and its main structural elements, what is included in optimization of the tank’s shape. The analysis of the load includes determination of the critical values and an analytical calculation of the stress-strain state. The definition of the cost function is the tank’s mass, which is mathematically determined using known parameters dependent on the design variables. Using the analysis of the threshold values the steps of optimization of the tank’s design by curving its shorter length. The thesis concludes that the optimized tank mass can be reduced for 17,6 % in comparison to the non-optimized one for equal load conditions.

• Keywords: Optimization, Cost function, Mass of tank, Power transformer, Stress strain state, Design variables, Vacuum