Model tropolno oklopljenog plinom izoliranog rasklopnog postrojenja za proračune vrlo brzih prijelaznih prenapona

Hutter, Sandra

prikaz prve stranice dokumenta Model tropolno oklopljenog plinom izoliranog rasklopnog postrojenja za proračune vrlo brzih prijelaznih prenapona

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scientific master's theses

Model tropolno oklopljenog plinom izoliranog rasklopnog postrojenja za proračune vrlo brzih prijelaznih prenapona

Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing, 2003. urn:nbn:hr:168:259715

Hutter, Sandra

University of Zagreb
Faculty of Electrical Engineering and Computing

Cite this document

APA 6th Edition

Hutter, S. (2003). Model tropolno oklopljenog plinom izoliranog rasklopnog postrojenja za proračune vrlo brzih prijelaznih prenapona (Scientific master's theses). Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing. Retrieved from https://urn.nsk.hr/urn:nbn:hr:168:259715

MLA 8th Edition

Hutter, Sandra. "Model tropolno oklopljenog plinom izoliranog rasklopnog postrojenja za proračune vrlo brzih prijelaznih prenapona." Scientific master's theses, University of Zagreb, Faculty of Electrical Engineering and Computing, 2003. https://urn.nsk.hr/urn:nbn:hr:168:259715

Chicago 17th Edition

Harvard

Hutter, S. (2003). 'Model tropolno oklopljenog plinom izoliranog rasklopnog postrojenja za proračune vrlo brzih prijelaznih prenapona', Scientific master's theses, University of Zagreb, Faculty of Electrical Engineering and Computing, accessed 15 January 2025, https://urn.nsk.hr/urn:nbn:hr:168:259715

Vancouver

Hutter S. Model tropolno oklopljenog plinom izoliranog rasklopnog postrojenja za proračune vrlo brzih prijelaznih prenapona [Scientific master's theses]. Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing; 2003 [cited 2025 January 15] Available at: https://urn.nsk.hr/urn:nbn:hr:168:259715

IEEE

S. Hutter, "Model tropolno oklopljenog plinom izoliranog rasklopnog postrojenja za proračune vrlo brzih prijelaznih prenapona", Scientific master's theses, University of Zagreb, Faculty of Electrical Engineering and Computing, Zagreb, 2003. Available at: https://urn.nsk.hr/urn:nbn:hr:168:259715

Cite this item: https://urn.nsk.hr/urn:nbn:hr:168:259715

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Metadata

Title	Model tropolno oklopljenog plinom izoliranog rasklopnog postrojenja za proračune vrlo brzih prijelaznih prenapona
Author	Sandra Hutter
Mentor	Ante Marušić (mentor)
Committee member	Ante Marušić (predsjednik povjerenstva)
Committee member	Ivo Uglešić (član povjerenstva)
Committee member	Franc Jakl (član povjerenstva)
Granter	University of Zagreb Faculty of Electrical Engineering and Computing Zagreb
Defense date and country	2003, Croatia
Scientific / art field, discipline and subdiscipline	TECHNICAL SCIENCES Electrical Engineering Power Engineering
Universal decimal classification (UDC)	621.3 - Electrical engineering
Abstract	U prvom poglavlju su opisani problemi koji se javljaju kod pogona plinom SF6 izoliranih postrojenja. Dane su statistike o učestalosti i uzrocima najčešćih kvarova, pouzdanosti i raspoloživosti, očekivanom životnom vijeku, itd. U radu su prikazana različite izvedbe optimiranih i hibridnih postrojenja. Modularne izvedbe omogućuju veliku fleksibilnost kod izgradnje novih ili nadogradnje starih postrojenja. Glavne prednosti su u raznolikosti ponuđenih rješenja, efikasnosti, robustnosti, minimalnoj potrebi za održavanjem, niskim troškovima pogona, dugom životnom vijeku, te pouzdanom i sigurnom pogonu. Razvijeni su modeli različitih dijelova tropolno oklopljenog postrojenja i primjenjeni su kod kompjuterskih simulacija unutarnjih i vanjskih vrlo brzih prenapona. Modelirane su slijedeće komponente: tropolno i jednopolno oklopljene sabirnice, rastavljači i prekidači, zemljospojnici, strujni i naponski transformatori, energetski transformatori, provodni izolatori, kabelski priključci, oklop postrojenja, uzemljivačke trake i glavni uzemljivač. Na ovaj način su modelirana dva postrojenja: postojeće 123 kV tropolno oklopljeno postrojenje i modificirani tip postrojenja iste naponske razine, koje je u fazi projekta. Provedeni su proračuni unutarnjih VFTO i prijelaznih porasta potencijala oklopa prilikom uklopa i isklopa rastavljača pomoću programa za proračun prijelaznih elektromagnetskih pojava - EMTP. Objašnjen je i način rješavanja diferencijalnih jednadžbi mreže pomoću programa EMTP. Također su izračunati i preneseni prenaponi u sekundarnim krugovima. Dobiveni računski rezultati uspoređeni su sa izmjerenim vanjskim tranzijentima na prelasku energetskih kabela u postrojenje u vremenskoj i frekvencijskoj domeni.
Abstract (english)	In the first chapter are described problems that can occur during operation of the gas insulated switchgear. Statistics on the failure frequency and main failure causes, reliability and availability, life expectancy, etc, were given. In the thesis are described different solutions of optimized and hybrid substations. Modular design enables a great flexibility if erecting new or upgrading an old substation. Their main advantages are: variety of offered solutions, efficiency, robustness, minimum maintenance, low operating costs, long operating life, and safe and reliable operation. Models for different parts of the three-phase encapsulated switchgear were developed and applied in computer simulations for calculation of inner and outer very fast transient overvoltages. Following components were modeled: three-phase and one-phase encapsulated bus bars, disconnectors and circuit breakers, earth switches, power transformers, gas to air bushings, GIS/cable junctions, GIS enclosure, ground straps and earthing grid. In this way are modeled two substations: an existing 123 kV three-phase encapsulated switchgear and a modified type of the switchgear with the same nominal voltage, that is currently in the design phase. Computer simulations of the inner VFTO and transient enclosure voltage rise during disconnector switching operations were conducted with the electromagnetic transient program - EMTP. Method of solutions of the differential equations for an network with EMTP program is also explained. Transmitted voltages in the secondary circuits were calculated, as well. Obtained calculation results were compared with the measured outer transients on the GIS/cable junction in time and frequency domain.
Keywords
Keywords (english)
Language	croatian
URN:NBN	urn:nbn:hr:168:259715
Study programme	Title: Postgraduate master programme in electrical engineering Study programme type: university Study level: postgraduate Academic / professional title: Magistar znanosti elektrotehnike (Magistar znanosti elektrotehnike)
Type of resource	Text
File origin	Born digital
Access conditions	Closed access
Terms of use
Repository	FER Repository
Created on	2019-03-25 08:54:31