Proračun početne simetrične komponente struje kratkog spoja prema IEC 60909 standardu

undergraduate thesis

• Title (english): Calculation of symmetrical short-circuit current component according to IEC 60909 standard
• Author: Natalia Risonjić
• Mentor: Ivica Pavić (mentor)
• Committee member: Ivica Pavić (predsjednik povjerenstva)
• Committee member: Ivana Damjanović (član povjerenstva)
• Committee member: Goran Grdenić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; Zagreb
• Defense date and country: 2019-07-12, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Electrical Engineering

Abstract

Kratki spoj u elektroenergetskim sustavima je vrlo česta pojava koja dovodi do velikih toplinskih i mehaničkih naprezanja zbog kojih je nužno obaviti proračune kratkog spoja.
Korištenjem navedene literature kroz ovaj rad je teorijski analizirana metoda proračuna kratkog spoja prema normi IEC 90609. Kod proračuna je potrebno odrediti o kojem se kratkom spoju radi te prepoznati radi li se o spoju koji je daleko ili blizu od generatora. Naposljetku, potrebno je izračunati struje potrebne za dimenzioniranje opreme, a to su udarna, rasklopna i struja mjerodavna za ugrijavanje.
Kao ključni dio završnog rada prikazana je simulacija kratkog spoja na mreži pomoću programskog paketa ETAP. Dobiveni su rezultati simulacije zajedno sa analizom i usporedbom s različitim uklopnim stanjima.

Abstract (english)

A short circuit in electrical systems is a very common phenomenon that leads to high thermal and mechanical stresses, which necessitate short-term calculation.
The use of the mentioned literature through this work is theoretically analyzed short-term calculation method according to IEC 90609. The calculation needs to determine which short circuit it is doing to identify whether the circuit is far or near to generator. Finally, it is necessary to calculate the currents needed to dimension the equipment, and those are impact, switching and thermal current.
A key part of the final job is the simulation of a short circuit on the network using the ETAP software package. The obtained simulation results together with the analysis and comparison with the various switching states.

• Keywords: elektroenergetski sustav; proračun kratkog spoja; IEC 90609; udaljenost kratkog spoja od generatora; udarna struja; rasklopna struja; struja mjerodavna za ugrijavanje; simulacija
• Keywords (english): Electrical system; short circuit calculation; IEC 90609; distance of the generator; impact current; switching current; thermal current; simulation
• Language: croatian
• URN:NBN: urn:nbn:hr:168:272008
• 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: 2020-01-07 21:51:21