Primjena norme IEC 60909:2016 za proračun struja kratkog spoja

undergraduate thesis

• Title (english): Application of IEC 60909:2016 standard for short-circuit calculation
• Author: Magdalena Krenek
• Mentor: Ivica Pavić (mentor)
• Committee member: Ivica Pavić (predsjednik povjerenstva)
• Committee member: Božidar Filipović-Grčić (član povjerenstva)
• Committee member: Ivana Damjanović (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; Zagreb
• Defense date and country: 2018-09-11, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Electrical Engineering

Abstract

Kod projektiranja elektroenergetskog sustava, osim rada u normalnom pogonu potrebno je uzeti u obzir i stanje u situacijama kada dođe do nepredviđenih naprezanja i kvarova u sustavu te sustav mora ostati neoštećen u oba slučaja. Svu opremu je potrebno dizajnirati s obzirom na stanje u normalnom pogonu i stanje kvara te s obzirom na to i odabrati odgovarajuće elemente zaštite tako da niti ljudi niti oprema ni u jednom trenutku ne budu ugroženi. Kratki spoj je neželjeno stanje mrežnog pogona. To stanje može uzrokovati preopterećenje operativne opreme (transformatori, prijenosni vodovi, kabli i generatori) kao i oštećenja izolacije. Dimenzioniranje i sigurnost elektroenergetskih sustava uvelike ovise o mogućnosti upravljanja strujama kratkog spoja.
Kratki spoj je neželjeno stanje mrežnog pogona. To stanje može uzrokovati preopterećenje operativne opreme (transformatori, prijenosni vodovi, kabli i generatori) kao i oštećenja izolacije. U ovom radu, objašnjeni su postupci proračuna struja kratkog spoja koje su mjerodavne za dimenzioniranje opreme primjenom norme IEC 60909. Opisane su karakteristike struja koje se pojavljuju za vrijeme kratkog spoja kao i postupci izračuna navedenih struja.

Abstract (english)

Every system installed must not only be suitable for normal operation, but must also be designed in consideration of fault conditions and must remain undamaged following operation under normal conditions and also following a fault condition. Electrical systems must therefore be designed so that neither persons nor equipment are endangered. The dimensioning, cost effectiveness, and safety of these systems depend to a great extent on being able to control short-circuit currents.
The short-circuit is an undesired network operating state. This state can cause overloading of the operational equipment (transformers, transmission lines, cables, and generators) as well as damage to the insulation. In this paper, procedures of calculating short-circuite currents are explained, according to IEC 60909 standard. The current characteristics, that occur during the short circuit, as well as the procedures for calculating the currents are described.

• Keywords: kratki spoj; norma IEC 60909; struje kratkog spoja; trofazni sustav
• Keywords (english): short-circuit; IEC 60909 standard; short-circuit currents; three-phase network
• Language: croatian
• URN:NBN: urn:nbn:hr:168:108048
• 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: 2019-03-13 21:56:51