Proračun i ispitivanje metalom oklopljenog, plinom SF6 izoliranog sklopnog postrojenja 145 kV na unutarnji luk

master's thesis

• Title (english): Calculation and testing of metal clad SF6 gas insulated switchgear plant 145 kV at the inner arc
• Author: Eugen Štimac
• Mentor: Damir Sumina (mentor)
• Committee member: Damir Sumina (predsjednik povjerenstva)
• Committee member: Igor Erceg (član povjerenstva)
• Committee member: Stjepan Stipetić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; Zagreb
• Defense date and country: 2018-02-16, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Electrical Engineering

Abstract

Ispitivanje na unutarnji luk metalom oklopljenog, plinom SF6 izoliranog sklopnog
postrojenja nazivnog napona 145 kV definirano je u normi za visokonaponske
oklopljene sklopne aparate, IEC 62271-203 koja spada u grupu neobaveznih
tipskih ispitivanja. U radu je dan opis matematičkih modela koji služe za izrađu
računalnih simulacija kojima se analizira unutarnji luk te je odabran unaprijeđeni
osnovni model koji, osim zadovoljavajuće točnosti proračuna, ima manje vrijeme
proračuna i modeliranja sklopnih aparata od složenijih modela. Nakon teorijskog
osvrta, dan je opis izrađenog programskog sučelja i analizirana njegova točnost na
provedenim ispitivanjima. Zaključeno je da razvijeni program daje dovoljno točan
proračun vremenske promjene parametara koji opisuju unutarnji luk, te istaknuti
ključni parametri na koje se pri simulaciji mora paziti kako bi ona bila
reprezentativna za stvarne pojave u visokonaponskim sklopnim aparatima.

Abstract (english)

Internal arc testing of metal enclosed, SF6 isolated switchgear rated for 145KV is
defined in IEC 62271-203, a norm for highvoltage enclosed switchgear, which is
grouped in non-mandatory type tests. In this paper, an explanation is given for
mathematical models which are used in making of computer simulations that
analyse internal arc, and an enchanced model is picked, which apart from
satisfying the accuracy of the calculation, also has less calculating and modeling
time for switchgears than the more complex models. After the theoretical review, a
description of the created computer interface is given and its accuracy is analyzed
on the conducted tests. It is concluded that the developed program provides a
sufficiently accurate calculation of the time change of the parameters that describe
the internal arc, and key parameters that must be observed during the simulation
are highlighted, so that the computer simulation could be representative of the real
effects in high-voltage switchgear.

• Keywords: Matlab; unutarnji luk; GIS; porast tlaka; porast temperature; visoki napon; sklopni uređaj
• Keywords (english): Matlab; internal arc; GIS; pressure rise; temperature rise; high voltage; switchgear
• Language: croatian
• URN:NBN: urn:nbn:hr:168:434704
• 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: Open access
• Created on: 2019-03-14 01:25:55