Modeliranje namota energetskog transformatora metodom crne kutije

master's thesis

• Title (english): Modeling of power transformer windings by the black box method
• Author: Marko Filip Horvat
• Mentor: Bojan Trkulja (mentor)
• Committee member: Bojan Trkulja (predsjednik povjerenstva)
• Committee member: Ana Drandić (član povjerenstva)
• Committee member: Bruno Jurišić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; Zagreb
• Defense date and country: 2022-07-04, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Electrical Engineering

Abstract

Ovaj rad bavi se problematikom raspodjele prenapona na namotu energetskog transformatora. U radu je prikazan postupak izrade visokofrekvencijskog modela namota metodom crne kutije. Model crne kutije dobiven je iz mjerene matrice admitancija aproksimacijom racionalnim funkcijama. Matrica admitancija mjerena je pomoću komercijalnog FRA uređaja za svaki drugi disk namota. Dobiveni modeli su spojeni i simulirani unutar programskog alata EMTP. Na namotu su provedena mjerenja prenapona u vremenskoj domeni na različite vrste pobuda. Rezultati simulacije i mjerenja su uspoređeni kako bi se model verificirao.

Abstract (english)

This thesis deals with the problem of voltage distribution on the winding of a power transformer. The paper presents the procedure for making a high-frequency winding model using the black box method. Black box model is obtained from the measured admittance matrix by approximation by rational functions. The admittance matrix is measured using a commercial FRA device for every other disk winding. The obtained models were merged and simulated within the EMTP software tool. Measurements of overvoltage in the time domain for different types of excitations were performed on the winding. The simulation and measurement results were compared for model verification.

• Keywords: namot; matrica admitancija; prenaponi; EMTP; model u prostoru stanja
• Keywords (english): winding; admittance matrix; overvoltages; EMTP; state space model
• Language: croatian
• URN:NBN: urn:nbn:hr:168:933398
• Study programme: Title: Electrical Engineering and Information Technology; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka elektrotehnike i informacijske tehnologije (magistar/magistra inženjer/inženjerka elektrotehnike i informacijske tehnologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2023-01-14 08:54:45