20.500.12556/RUL-187206 Tehnične lastnosti otočnih sistemov za napajanje hiše s sončnimi celicami, baterijo in agregatom Technical characteristics of off-grid systems for powering a house with solar panels, battery storage and a backup generator Otočni sistemi omogočajo oskrbo objektov z električno energijo tam, kjer priključitev na elektroenergetsko omrežje ni mogoča ali ekonomsko upravičena. Zaradi spremenljive proizvodnje iz obnovljivih virov je pri takšnih sistemih pomembno ustrezno dimenzioniranje posameznih komponent. V diplomskem delu je obravnavan hibridni otočni sistem za napajanje enodružinske hiše, sestavljen iz fotonapetostnega sistema, baterijskega hranilnika in električnega agregata. Namen diplomskega dela je bil določiti tehnično izvedljivo in ekonomsko najugodnejšo konfiguracijo sistema. Analiza je temeljila na dejanskih podatkih o porabi električne energije objekta in podatkih o sončnem sevanju. V programu MATLAB je bil prilagojen simulacijski model za celoletno simulacijo delovanja sistema v 30-minutnih intervalih. Z optimizacijskim postopkom so bile preverjene različne kombinacije števila fotonapetostnih modulov, kapacitete baterijskega hranilnika in moči agregata. Na podlagi rezultatov in pregleda tržne ponudbe so bile izbrane konkretne komponente sistema. Končno izbrani sistem sestavljajo fotonapetostni sistem moči 23,92 kWp, baterijski hranilnik kapacitete 61,44 kWh, 16-kW hibridni razsmernik in 6-kW dizelski agregat. Simulacija je pokazala, da sistem v celoti pokrije letno porabo objekta, ki znaša približno 11,5 MWh. Fotonapetostni sistem proizvede približno 28,7 MWh električne energije na leto, agregat pa dodatnih 2,9 MWh in obratuje 603 ure. Ocenjeni letni strošek sistema znaša približno 3.610 €, kar je približno 91 % več od stroška oskrbe iz elektroenergetskega omrežja. Rezultati kažejo, da je popolnoma otočno napajanje tehnično izvedljivo, vendar pri že zagotovljeni priključitvi na omrežje ekonomsko manj ugodno. Off-grid systems enable the supply of electrical energy to buildings where connection to the public power grid is not possible or economically justified. Due to the variable generation from renewable energy sources, proper sizing of individual components is important in such systems. This thesis examines a hybrid off-grid system for supplying a single-family house, consisting of a photovoltaic system, a battery energy storage system, and an electric generator. The aim of the thesis was to determine a technically feasible and economically optimal system configuration. The analysis was based on actual electricity consumption data of the building and solar irradiation data. A simulation model was adapted in MATLAB for a fullyear simulation of the system operation in 30-minute intervals. An optimization procedure was used to evaluate different combinations of the number of photovoltaic modules, battery storage capacity, and generator power. Based on the results and a review of commercially available equipment, specific system components were selected. The final system consists of a 23.92 kWp photovoltaic system, a battery energy storage system with a capacity of 61.44 kWh, a 16 kW hybrid inverter, and a 6 kW diesel generator. The simulation showed that the system fully covers the annual electricity consumption of the building, which amounts to approximately 11.5 MWh. The photovoltaic system produces approximately 28.7 MWh of electrical energy per year, while the generator supplies an additional 2.9 MWh and operates for 603 hours. The estimated annual cost of the system is approximately €3,610, which is about 91% higher than the cost of electricity supplied from the public power grid. The results show that a fully off-grid supply is technically feasible, but economically less favourable when a grid connection is already available. otočni sistem fotonapetostni sistem baterijski hranilnik električni agregat optimizacija off-grid system photovoltaic system battery energy storage system electric generator optimization true false false Slovenski jezik Angleški jezik Diplomsko delo/naloga 2026-09-09 11:40:06 2026-09-09 11:40:10 2026-09-16 12:45:28 0000-00-00 00:00:00 2026 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 62905 291293187 Zalar_Gasper_-_Tehnicne_lastnosti_otocnih_sistemov_za_napajanje_hise_s_soncnimi_celicami,_bateri.pdf Zalar_Gasper_-_Tehnicne_lastnosti_otocnih_sistemov_za_napajanje_hise_s_soncnimi_celicami,_bateri.pdf 1 76BF98F4BEB972F882FD6934E6C9C51D 147fa4e05bd47c0bdf57e5ce3c5bb7d1c0408c785a7a732cd2403592f42247d8 6ccab467-ac32-11f1-8bc5-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=246704 Fakulteta za elektrotehniko 0 0 0