Utjecaj stabilizacijskog namota energetskog transformatora na strujno-naponske prilike pri kvarovima u elektroenergetskom sustavu

master's thesis

• Title (english): Influence of the stabilization winding of the power transformer on the current-voltage conditions in case of short-circuit in the power system
• Author: Tomislav Pavičić
• Mentor: Božidar Filipović-Grčić (mentor)
• Committee member: Božidar Filipović-Grčić (predsjednik povjerenstva)
• Committee member: Viktor Milardić (član povjerenstva)
• Committee member: Ivica Pavić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; Zagreb
• Defense date and country: 2020-07-07, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Electrical Engineering

Abstract

U ovom je diplomskom radu teorijski objašnjen rad autotransformatora, opisano je modeliranje transformatora za kratki spoj te su objašnjeni pozitivni učinci stabilizacijskog namota. U praktičnom dijelu modeliran je tronamotni energetski autotransformator sa stabilizacijskim namotom u softverskom alatu EMTP koji proračun vrši u vremenskoj domeni. Točnost modela potvrđena je usporedbom s modelom iz literature te su simulirane različite vrste kratkih spojeva. Nakon izvršene simulacije i proračuna promatrano je kako strujno-naponske prilike tijekom kratkog spoja ovise o prisutnosti stabilizacijskog namota i uzemljenju zvjezdišta transformatora.

Abstract (english)

This thesis theoretically describes the autotransformer, transformer modeling for short-circuit studies and positive effects of stabilization winding. In practical part of this work three winding power autotransformer is modeled in EMTP software which solves the circuit in time domain. Model is validated and it's correctness is confirmed in comparison with another model from literature. Different types of short-circuit cases are simulated and currect-voltage conditions are observed in respect to presence of stabilization winding and different transformer grounding impedances.

• Keywords: energetski transformator; autotransformator; model; stabilizacijski namot; kratki spoj
• Keywords (english): power transformer; autotransformer; model; stabilization winding; short-circuit
• Language: croatian
• URN:NBN: urn:nbn:hr:168:730297
• 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: 2023-01-13 13:24:58