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master's thesis
Analiza prenaponske zaštite visokonaponskog transformatora korištenjem programskog paketa EMTP-RV
2021. urn:nbn:hr:179:772969
Rojnica, Marko
University of Split
Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture
Department of Power Engineering

Cite this document

Rojnica, M. (2021). Analiza prenaponske zaštite visokonaponskog transformatora korištenjem programskog paketa EMTP-RV (Master's thesis). Split: University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:179:772969

Rojnica, Marko. "Analiza prenaponske zaštite visokonaponskog transformatora korištenjem programskog paketa EMTP-RV." Master's thesis, University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, 2021. https://urn.nsk.hr/urn:nbn:hr:179:772969

Rojnica, Marko. "Analiza prenaponske zaštite visokonaponskog transformatora korištenjem programskog paketa EMTP-RV." Master's thesis, University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, 2021. https://urn.nsk.hr/urn:nbn:hr:179:772969

Rojnica, M. (2021). 'Analiza prenaponske zaštite visokonaponskog transformatora korištenjem programskog paketa EMTP-RV', Master's thesis, University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, accessed 18 April 2024, https://urn.nsk.hr/urn:nbn:hr:179:772969

Rojnica M. Analiza prenaponske zaštite visokonaponskog transformatora korištenjem programskog paketa EMTP-RV [Master's thesis]. Split: University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture; 2021 [cited 2024 April 18] Available at: https://urn.nsk.hr/urn:nbn:hr:179:772969

M. Rojnica, "Analiza prenaponske zaštite visokonaponskog transformatora korištenjem programskog paketa EMTP-RV", Master's thesis, University of Split, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, Split, 2021. Available at: https://urn.nsk.hr/urn:nbn:hr:179:772969

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Metadata
TitleAnaliza prenaponske zaštite visokonaponskog transformatora korištenjem programskog paketa EMTP-RV
Title (english)Analysis of overvoltage protection of a high-voltage transformer using EMTP-RV
AuthorMarko Rojnica
MentorDino Lovrić (mentor)
GranterUniversity of Split
Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture
(Department of Power Engineering)
Split
Defense date and country2021-09-06, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Electrical Engineering
Power Engineering
Abstract
Zadatak diplomskog rada bio je modelirati visokonaponsku mrežu, te provesti detaljnu analizu prenaponske zaštite energetskog transformatora uslijed udara munje pomoću programskog paketa EMTP-RV. Prilikom modeliranja mreže ispoštovana su načela i zahtjevi struke. Udari munje koji su korišteni za simulaciju udara munje su standardizirane vrijednosti. U prvom, uvodnom poglavlju dan je pregled zadatka diplomskog rada te je opisan programski paket u kojem će se rješavati zadani problem. Također je i ukratko skiciran razmatrani scenarij. U drugom poglavlju diplomskog rada dan je pregled svih scenarija koji se modeliraju u programskom paketu EMTP-RV. Također, tu je opisan i način modeliranja struje munje korištenjem Heidlerove funkcije koju preporuča skup normi HRN EN 62305. U trećem poglavlju diplomskog rada opisani su svi glavni elementi nadomjesne sheme razmatranog scenarija u programskom paketu EMTP-RV. U što većoj mjeri se nastojalo koristiti već gotove elemente koji su dostupni u biblioteci dotičnog programskog paketa. Neki elementi poput odvodnika prenapona modelirani su složenijim metodama koje zahtijevaju kombiniranje više dostupnih blokova za dobivanje funkcionalnog bloka. U četvrtom poglavlju diplomskog rada dat je detaljan uvid u ponašanje mreže uslijed udara munje u zaštitno uže na određenim mjestima. Izneseni su zaključci na temelju analize gdje je najbolje pozicionirati same odvodnike prenapona. Na kraju ovoga poglavlja analizirana su i sama iskrišta na svih trideset stupova, koja su provela struju, ovisno o mjestu i obliku munje.
Abstract (english)
The task of the graduate thesis was to model a high-voltage power grid and to conduct a detailed analysis of overvoltage protection of a power transformer when a part of a supplying power grid is struck by lightning. The analysis is to be performed in EMTP-RV. In the first, introductory, chapter a brief overview of the thesis task is given together with a concise description of EMTP-RV as well as the observed scenarios. In the second chapter, a more detailed overview of all considered scenarios is given. All scenarios are modeled in EMTP-RV. Additionally, this chapter contains a description of modelling the lightning current using the Heidler function which is recommended by the standard HRN EN 62305. In the third chapter, all the main elements/blocks used in the EMTP-RV to model the observed scenarios are described in detail. An effort was made to use finished blocks available in the EMTP-RV program. However, some elements such as surge arrester are modeled using more complex methods in which more basic elements are combined to produce a functional block. In the fourth chapter, a detailed insight in the behavior of the protected/unprotected power grid in the conditions of a lightning strike are given. The lightning strike is assumed to occur in the shield wire. Conclusions are drawn based on the conducted analysis especially regarding the placement of the surge arresters. In the end of this chapter an overview of the current flowing through air gaps of the phase conductor insulators is given for all thirty conductor poles.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:179:772969
Study programmeTitle: Electrical Engineering
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka elektrotehnike (magistar/magistra inženjer/inženjerka elektrotehnike)
Type of resourceText
File originBorn digital
Access conditionsAccess restricted to authenticated users
Terms of useLicence In copyright icon
Created on2021-11-25 09:35:42