Proračun kratkog spoja u distribucijskim mrežama s velikim udjelom obnovljivih izvora

undergraduate thesis

• Title (english): Short-circuit calculation in distribution networks with high renewable sources portion
• Author: Dario Mađar
• Mentor: Ivica Pavić (mentor)
• Committee member: Ivica Pavić (predsjednik povjerenstva)
• Committee member: Goran Grdenić (član povjerenstva)
• Committee member: Ivana Damjanović (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; Zagreb
• Defense date and country: 2020-07-08, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Electrical Engineering

Abstract

U ovom radu cilj mi je bio obraditi problem proračuna struja kratkog spoja. Za početak sam ukratko objasnio simetrične komponente jer to smatram nužnim za razumijevanje ostatka rada.
Nakon toga prešao sam na teoriju kratkog spoja, što je, čemu služi, koje su vrste, te koje sve struje su nam potrebne za dimenzioniranje zaštitnih i drugih uređaja. Kako bih se mogao pozabaviti samim proračunom struja kratkog spoja morao sam objasniti i normu IEC 60909. Ukratko sam objasnio pojmove distribucije i obnovljivih izvora energije jer je rad fokusiran na tom području. Prije kratkog primjera naveo sam i objasnio sve nadomjesne impedancije. Za kraj sam na primjeru jedne mreže matematički i pomoću programskog alata NEPLAN izvršio potpuni proračun struja kratkog spoja.

Abstract (english)

Main goal in this paper was to explain the problem of short circuit current calculation. I started my paper with explanation of symmetrical components which I think is necessary to understand the rest of this paper.
After that I began with theory of short circuit, what is that, what is it used for, what types are there and what currents we need protective and other devices sizing. To begin with calculation I had to explain very important norm which is norm IEC 60909. In few sentences I described electric power distribution and renewable energy sources. After all that theoretical explanations I did mathematical calculation of short circuit current. At the end of this paper I did calculation in program NEPLAN, same electrical network as used in example earlier.

• Keywords: simetrične komponente; direktna komponenta; inverzna komponenta; nulta komponenta; kratki spoj; jednofazni kratki spoj; dvofazni kratki spoj; trofazni kratki spoj; udarna struja; rasklopna struja; struja mjerodavna za ugrijavanje; trajna struja kratkog spoja; IEC 60909; distribucija; obnovljivi izvori energije; voda; vjetar; Sunce; biomasa; geotermalna energija; generator; transformator; elektrana; vod; kabel; motor; trošilo; NEPLAN
• Keywords (english): symmetrical components; direct component; inverse component; zero component; short circuit; single phase short circuit; double phase short circuit; short circuit breaking current; thermal short circuit current; steady state current; IEC 60909; electric power distribution; renewable energy sources; water; wind; Sun:biomass; geothermal energy; generator; transformer; power plant; line; cable; motor; load; NEPLAN
• Language: croatian
• URN:NBN: urn:nbn:hr:168:006093
• Study programme: Title: Electrical Engineering and Information Technology; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka elektrotehnike i informacijske tehnologije (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka elektrotehnike i informacijske tehnologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2023-01-13 15:28:03