Dinamika sustava istosmjernih napajanja u elektroenergetskim postrojenjima

doctoral thesis

• Title (english): DC Power System Dynamics in Power Facilities
• Author: Javor Škare
• Mentor: Sejid Tešnjak (mentor)
• Committee member: Tomislav Tomiša (predsjednik povjerenstva)
• Committee member: Sejid Tešnjak (član povjerenstva)
• Committee member: Stjepan Car (član povjerenstva)
• Committee member: Luka Korkut (član povjerenstva)
• Committee member: Drago Ban (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; (Department of Energy and Power Systems); Zagreb
• Defense date and country: 2009-06-10, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Electrical Engineering
• Universal decimal classification (UDC): 621.3 - Electrical engineering

Abstract

Sustavi istosmjernog napona predstavljaju jedan od najpouzdanijih izvora električne energije u elektroenergetskim postrojenjima. Budući da se sustavi istosmjernog napona razlikuju od sustava izmjeničnog napona, bitno je prilikom projektiranja takovih sustava dati pozornost njihovim specifičnostima. Prvotno su u disertaciji dati temeljni elementi sustava istosmjernih napajanja u elektroenergetskim postrojenjima. Zasnovan je matematički i odgovarajući (izvorni) simulacijski model za dinamičku analizu sustava istosmjernih napajanja u elektroenergetskim postrojenjima. Rezultati simulacijskih istraživanja provjereni su u praksi – primarnim ispitivanjima u realnom postrojenju. Dobivena saznanja rezultirali su s pozitivnim učincima, što znači da se zasnovane teorijske podloge mogu ubuduće koristiti, te da će rezultati proračuna biti sukladni rezultatima dobivenim primarnim ispitivanjima selektivnosti u realnom postrojenju.

Abstract (english)

DC auxiliary systems are usually relied upon as the last source of reliable electric power at an installation of power plants and substations. Because of the differences between DC and AC power supply systems, DC system protection designers should take into account that important fact in calculating and dimensioning of DC power supply system. In the first place, in this doctorial thesis is given the introduction and short description of main electrical devices and components of DC auxiliary systems of power plants and substations. The appropriate mathematical model for dynamics analysis in DC power supply systems of power plants and substations was defined. Using given mathematical model the original softwares were developed. Calculation results were verified on Site during DC Circuit Breakers selectivity testing. Assigned cognitions have good results, therefore it is possible to check DC Circuit Breakers selectivity using the software developed in this dissertation. The calculation results correspond well with the results recorded on Site during DC Circuit Breakers selectivity testing.

• Keywords: sustav istosmjernog napajanja; energetska postrojenja; zaštitni uređaji; selektivnost; kratki spoj; matematički model za analizu dinamike; ispitivanja selektivnosti
• Keywords (english): DC power supply; power plants and substations; protection devices; selectivity; mathematical model for the dynamics analysis; selectivity testing
• Language: croatian
• URN:NBN: urn:nbn:hr:168:107934
• Study programme: Title: Doctoral study programme "Electrical Engineering and Computing"; Study programme type: university; Study level: postgraduate; Academic / professional title: doktor/doktorica znanosti, po-dručje tehničkih znanosti (doktor/doktorica znanosti, po-dručje tehničkih znanosti)
• Catalog URL: https://lib.fer.hr/cgi-bin/koha/opac-detail.pl?biblionumber=33440
• Type of resource: Text
• Extent: 170 str.
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2020-04-06 07:16:28