20.500.12556/RUL-173647 Optimizacija ogrevanja hiše s samooskrbno sončno elektrarno in hranilniki energije Optimization of house heating with residential solar power plant and energy storage devices V zadnjih letih se zaradi naraščajočih cen energije in vse večje želje po zmanjševanju okolijskega onesnaževanja povečuje interes za izgradnjo sistemov za samooskrbo z električno energijo iz obnovljivih virov. Pri tem sončne elektrarne postajajo ključna tehnologija, saj omogočajo lokalno proizvodnjo elektrike in zmanjšujejo odvisnost od omrežja. Njihova uporabnost se še poveča z uporabo hranilnikov energije in naprednih sistemov za upravljanje porabe, kar omogoča stabilno delovanje tudi ob neugodnih vremenskih pogojih. V okviru te diplomske naloge je bil razvit in implementiran takšen sistem, prilagojen za delovanje v realnem gospodinjstvu. Predstavljen je celovit sistem za samooskrbo z električno energijo, ki vključuje sončno elektrarno z največjo močjo 17 kW, hibridni razsmernik Deye s priključenim baterijskim hranilnikom kapacitete 25 kWh ter sistem za upravljanje ogrevanja. Sistem je zasnovan tako, da omogoča učinkovito rabo energije iz obnovljivih virov, hkrati pa ohranja varnostno redundanco z obstoječim oljnim ogrevalnim sistemom, kar omogoča energetsko samozadostnost tudi v pogojih najnižjega sončnega obsevanja v zimskih mesecih. Za krmiljenje ogrevalnega sistema je uporabljen krmilnik Siemens LOGO!, ki usmerja delovanje toplotne črpalke, hranilnika tople vode (bojlerja) s pomočjo štirih tripotnih elektromagnetnih ventilov, mešalnega ventila za talno ogrevanje ter treh vodnih črpalk za poganjanje vode po sistemu. Sistem vključuje tudi vremensko napovedovanje s pomočjo mikrokontrolerja ESP32, ki omogoča prilagajanje polnjenja baterij in uporabo energije glede na predvideno osončenje naslednjega dne. Podatkovna komunikacija med razsmernikom Deye in preostalim sistemom poteka prek Modbus RTU protokola z uporabo vmesnika USR-DR134, kar omogoča zanesljivo in razširljivo integracijo vseh komponent. Zaključek dela obravnava tudi strategijo optimizacije rabe energije z vidika prioritizacije porabnikov, shranjevanja in učinkovitega nadzora. Sistem je bil zasnovan, izveden in preizkušen v realnih pogojih, rezultati pa kažejo na visoko stopnjo učinkovitosti, zanesljivosti ter možnost nadgradnje sistema v smeri pametnega doma in boljše energetske fleksibilnosti. In recent years, due to rising energy prices and an increasing desire to reduce environmental pollution, interest in building self-sufficient electricity systems from renewable sources has grown. Solar power plants are becoming a key technology in the transition to a low-carbon society, as they enable local electricity production and reduce dependence on the grid. Their efficiency is further enhanced by the use of energy storage systems and advanced consumption management, allowing stable operation even under unfavourable weather conditions. As part of this thesis, such a system was developed and implemented, tailored for operation in a real household environment. The thesis presents a comprehensive self-supply electricity system, which includes a solar power plant with a maximum output of approximately 17 kW, a Deye hybrid inverter connected to a 25 kWh battery storage unit, and a heating management system. The system is designed to enable efficient use of renewable energy while maintaining safety redundancy through the existing oil-based heating system, ensuring energy selfsufficiency even during the lowest solar irradiation periods in winter. The heating system is controlled by a Siemens LOGO! controller, which manages the operation of the heat pump and hot water tank (boiler) using four three-way solenoid valves, a mixing valve for underfloor heating, and three water pumps circulating water throughout the system. It also includes weather forecasting using an ESP32 microcontroller, which enables the battery charging and energy use to be adjusted based on the predicted sunlight for the following day. Data communication between the Deye inverter and the rest of the system takes place via the Modbus RTU protocol using the USR-DR134 interface, enabling reliable and scalable integration of all components. The conclusion of the thesis also discusses an energy use optimization strategy based on prioritization of loads, storage, and efficient control. The system was designed, implemented, and tested under real conditions, with results demonstrating a high level of efficiency, reliability, and potential for system upgrades toward smart home integration and improved energy flexibility. sončna elektrarna hranilniki energije toplotna črpalka Siemens LOGO! Modbus komunikacija ESP32 solar power plant energy storage systems heat pump Siemens LOGO! Modbus communication ESP32 true false false Slovenski jezik Angleški jezik Diplomsko delo/naloga 2025-09-19 11:15:01 2025-09-19 11:15:17 2025-11-11 03:56:48 0000-00-00 00:00:00 2025 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 62993 252091651 Grabner_Primoz_-_Optimizacija_ogrevanja_hise_s_samooskrbno_soncno_elektrarno_in_hranilniki_energ.pdf Grabner_Primoz_-_Optimizacija_ogrevanja_hise_s_samooskrbno_soncno_elektrarno_in_hranilniki_energ.pdf 1 E28EBD43B17A53E5310257203E0BCDC2 1202fd0489a4efca2860f5710cf4e51013a87c11938d76bb6cd23bc2b7e8767b fc196aa8-9538-11f0-9328-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=218266 Fakulteta za elektrotehniko 0 0 0