20.500.12556/RUL-187166 Vpliv baterijskih hranilnikov na razdelilne transformatorske postaje The impact of battery energy storage systems on distribution substations Magistrska naloga obravnava vpliv baterijskih hranilnikov električne energije na razdelilne transformatorske postaje 110/20 kV v distribucijskem omrežju Elektro Gorenjske. Z naraščanjem deleža obnovljivih virov in razmerami na trgu z električno energijo postajajo baterijski hranilniki vse pogostejši element distribucijskega sistema. Njihovo tržno vodeno obratovanje pa lahko pomembno vpliva na elektroenergetsko infrastrukturo, na katero so priključeni. Za analizo vpliva je bilo razvito simulacijsko orodje v programskem jeziku Python, ki temelji na realnih 15-minutnih obratovalnih podatkih za 11 razdelilnih transformatorskih postaj za leto 2024. Orodje simulira obratovanje hranilnika z močjo 5 MW in 10 MW v treh scenarijih: brez hranilnika, s prostim arbitražnim obratovanjem in z dinamično omejitvijo obremenitve transformatorja, ter preverja izpolnjevanje n-1 kriterija pri normalnem obratovanju, izpadu transformatorja in izpadu povezovalnega voda. Poleg obremenitve transformatorjev in vodov je analiziran tudi vpliv hranilnika na regulacijo napetosti z regulatorjem z regulacijo pod obremenitvijo (OLTC), vključno s kompaundacijo. Rezultati kažejo, da ima priključitev hranilnika merljiv vpliv tako na obremenitve transformatorjev kot na frekvenco preklopov regulatorja napetosti. Vpliv je odvisen od moči hranilnika, nazivne moči transformatorja in obremenitvenih razmer posamezne postaje. Ugotovljeno je, da dinamična omejitev obremenitve učinkovito zagotavlja varno obratovanje pri minimalnem vplivu na ekonomski izkoristek hranilnika. Rezultati nudijo distribucijskemu operaterju metodološko osnovo za ocenjevanje primernosti priključitve hranilnika na posamezno postajo pred izdajo soglasja. This master's thesis investigates the impact of MW-scale battery energy storage systems (BESS) on 110/20 kV distribution transformer substations in the Elektro Gorenjska distribution system. As the share of renewable energy sources grows and because of conditions on electric energy markets, battery storage systems are becoming an increasingly common element of distribution systems. However, their market-driven operation can have significant effects on the infrastructure to which they are connected. A simulation tool was developed in Python, based on real 15-minute operational data for eleven regional transformer substations for the year 2024. The tool simulates BESS operation at rated powers of 5 MW and 10 MW across three scenarios: without storage, with unconstrained arbitrage operation, and with dynamic transformer load limitation, and verifies compliance with the n-1 criterion under normal operation, transformer outage, and line outage conditions. In addition to transformer and line loading, the tool analyses the effect of the BESS on voltage regulation via the on-load tap changer (OLTC), including line drop compensation. Results show that connecting a BESS has a measurable impact on both transformer loading and the annual frequency of voltage regulator tap changes. The magnitude of this impact depends on the BESS power rating, the transformer rated capacity, and the loading characteristics of each individual substation. It is found that dynamic load limitation effectively ensures safe network operation with minimal impact on the economic performance of the storage system. The results provide distribution system operators with a methodological basis for assessing the suitability of BESS connections at individual substations prior to issuing grid connection approvals. baterijski hranilnik električne energije razdelilna transformatorska postaja n-1 kriterij regulacija napetosti arbitraža battery energy storage system transformer substation n-1 criterion voltage regulation arbitrage true false false Slovenski jezik Angleški jezik Magistrsko delo/naloga 2026-09-09 09:45:01 2026-09-09 09:45:03 2026-09-10 04:31:14 0000-00-00 00:00:00 2026 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 1970-01-01 63427 Licer_Matic_-_Vpliv_baterijskih_hranilnikov_na_razdelilne_transformatorske_postaje.pdf Licer_Matic_-_Vpliv_baterijskih_hranilnikov_na_razdelilne_transformatorske_postaje.pdf 1 867BB5733E30B66FFFB9BF102435C0E8 47be361c28b31dc2dc702e80dfa7b70a868bb19a399862fd5508d8da8920c10b 58794207-ac22-11f1-8bc5-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=246625 Fakulteta za elektrotehniko 0 0 0