20.500.12556/DKUM-16785 ANALIZA IZOLACIJSKE TRDNOSTI ENOPOLNEGA SREDNJENAPETOSTNEGA IZOLIRANEGA PODSTAVKA VAROVALKE VOH 01 INSULATION STRENGHT ANALYSIS OF SINGLE-POLE MEDIUM VOLTAGE INSULATED FUSE BASE VOH 01 V diplomskem delu je obravnavan enopolni srednjenapetostni izoliran podstavek varovalke VOH 01, ki omogoča zanesljivejše obratovanje in varnejše posluževanje transformatorske postaje. V programu Flux so z metodo končnih elementov izračunane električne in magnetne razmere 3D modela podstavka varovalke VOH 01. Pri izračunu harmoničnega električnega polja je analizirana izolacijska trdnost pri dveh vrednostih napetosti in prikazan vpliv sprememb relativne dielektričnosti εr v izolaciji na električno poljsko jakost E. Pri izračunu harmoničnega magnetnega polja je izračunana velikost vrtinčnega toka v nosilcu podstavka in prikazan vpliv povečanja vzbujalnega toka na vrtinčne izgube. Pri elektrostatičnem izračunu so predstavljene električne razmere in vpliv sprememb relativne dielektričnosti εr v izolaciji na električno poljsko jakost E. Z različnimi izračuni in grafičnim prikazom rezultatov je pridobljena predstava o električnih in magnetnih razmerah v notranjosti in okolici izoliranega podstavka varovalke VOH 01. Single-pole medium voltage insulated fuse base VOH 01, which enables reliable operation and safer supply of transformer substation, is discussed in this diploma. Electric and magnetic conditions in 3D model of fuse base VOH 01 were calculated by using the finite element method with the software Flux. In calculating the harmonic electric field, the dielectric strenght at two levels of voltage was analysed and the impact of changes of relative permittivity εr of the insulation on the electric field strength E was observed. In calculating the harmonic magnetic field, the size of the eddy-current in the carrier of fuse holder was calculated and the effect of increasing current on eddy-current losses was studied. In the electrostatic calculation, the electrical conditions and the impact of changes of relative permittivity εr of the insulation on the electric field strength E was observed. We were given the idea of electric and magnetic conditions inside and around the isolated fuse base VOH 01 by different calculations and graphic display of results. taljiva varovalka podstavek varovalke metoda končnih elementov električno polje magnetno polje. melting fuse fuse base finite element method electric field magnetic field. true true false [R. Podpečnik] Slovenski jezik Angleški jezik Diplomsko delo 2010-11-20 09:53:23 2011-01-06 09:14:21 2022-04-13 08:54:23 2023-12-21 03:17:14 2010 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.315.61:621.316.923(043.2) 14986774 URN:SI:UM:DK:DI0TKTVU UNI_Podpecnik_Robi_2010.pdf UNI_Podpecnik_Robi_2010.pdf 1 1D92DC189B921CFD64A399CAE51CDC5F dace2ba7a33fe06ae560fae3f78492565ace0c1f6634909f2ccf7e427dd5fb11 ba86cf1a-7c04-11eb-bb7a-00155d0001ca 20.500.12556/dkum/42057430-50e0-4e84-9353-d0dcec853c65 https://dk.um.si/Dokument.php?lang=slv&id=19193 Fakulteta za elektrotehniko, računalništvo in informatiko 0 0 0