Numerični izračun kratkostične napetosti v energetskem transformatorju

diplomsko delo

Alen Steinacher (Author), Mislav Trbušić (Mentor), Marko Jesenik (Co-mentor)

Abstract

V prvem delu diplomskega dela smo opredelili trifazne energetske transformatorje, opisali generatorski, regulacijski in transformator s tremi navitji, opisali problematiko kratkostične napetosti ter podali analitične formule za njen izračun. V osrednjem delu naloge smo se osredotočili na modeliranje transformatorja v programskem okolju FEMM in izračun kratkostične napetosti preko magnetne energije v transformatorskem oknu. Izračuni so bili izvedeni za tri tipe transformatorjev, in sicer za generatorski transformator ali blok transformator, za dvonaviti regulacijski transformator in tronaviti regulacijski transformator. V zadnjem delu naloge smo primerjali numerično dobljene rezultate s tistimi, ki smo jih dobili preko analitične formule. Na podlagi primerjave smo zapisali sklep o ustreznosti uporabe numeričnih pristopov pri izračunu kratkostične napetosti energetskih transformatorjev.

Keywords

energetski transformator;kratkostična napetost;razsipano polje;metoda končnih elementov (MKE);diplomske naloge;

Data

Language:	Slovenian
Year of publishing:	2022
Typology:	2.11 - Undergraduate Thesis
Organization:	UM FERI - Faculty of Electrical Engineering and Computer Science
Publisher:	[A. Steinacher]
UDC:	621.314.222.064.1(043.2)
COBISS:	140374531
Views:	152
Downloads:	19
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Numerical calcultation of short circuit voltage in power transformer
Secondary abstract:	In the first part of the thesis, we defined three-phase power transformers, described the generator transformer, the control transformer and the transformer with three windings, described the short-circuit voltage problem and gave analytical formulas for its calculation. In the main part of the thesis we focused on modelling the transformer in the FEMM software environment and calculating the short-circuit voltage via magnetic energy in the transformer window. The calculations were performed for three types of transformers, namely a generator transformer or block transformer, a two-winding control transformer and a three-winding control transformer. In the last part of the thesis, the results obtained numerically were compared with those obtained through an analytical formula. On the basis of the comparison, we wrote a conclusion on the appropriateness of using numerical approaches in the calculation of short-circuit voltage of power transformers.
Secondary keywords:	power transformer;short circuit voltage;stray flux;finite element method (FEM);
Type (COBISS):	Bachelor thesis/paper
Thesis comment:	Univ. v Mariboru, Fak. za elektrotehniko, računalništvo in informatiko, Elektrotehnika
Pages:	1 spletni vir (1 datoteka PDF (XVI, 86 f.))
ID:	16357552