525 KB0 KB201320252025Korunović, Lidija M.letnik:18številka:issue 4str. 203-211ISSN:1855-5748COBISSID_HOST:268895747URN:URN:NBN:SI:doc-9ZBGOA8UenFakulteta za energetikoUniversity of Maribor, University of Maribor PressJournal of energy technologycharacteristicsdistribucijski transformatordistribution transformerizgubekarakteristikelossesmeasurementsmeritveregulacija napetostisustainabilitytrajnostvoltage regulationMeasurement-based evaluation of distribution transformer losses characteristics for sustainable voltage regulation|This paper presents the characteristics of distribution transformer losses obtained on the basis of field measurements in a distribution grid. The active and reactive powers were recorded simultaneously at both 110 kV and 35 kV transformer voltage levels in different periods of the days, when the position of the on-load tap changer was changed intentionally. The variations of total transformer losses during these experiments were modelled by exponential models. The parameters of the models were grouped according to the particular daily periods, analysed statistically and compared with corresponding parameters of transformer load models. The importance was emphasised of knowing transformer losses characteristics in the networks with a significant share of distributed generation, energy storage systems and electric vehiclesČlanek obravnava značilnosti izgub distribucijskih transformatorjev, določene na podlagi terenskih meritev v distribucijskem elektroenergetskem omrežju. Aktivna in jalova moč sta bili sočasno merjeni na transformatorskih napetostnih nivojih 110 kV in 35 kVv različnih obdobjih dneva, pri čemer je bil položaj obremenitvenega preklopnika (OLTC) namerno spreminjan. Spremembe skupnih izgub transformatorja med izvedenimi preizkusi so bile modelirane z eksponentnimi modeli. Parametri modelov so bili razvrščeni glede na posamezna dnevna obdobja, statistično analizirani ter primerjani z ustreznimi parametri modelov obremenitve transformatorja. Poudarjen je bil pomen poznavanja značilnosti izgub transformatorjev v omrežjih z velikim deležem razpršene proizvodnje, sistemov za shranjevanje energije in električnih vozilTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaUniverza v Mariboru, Fakulteta za energetiko