Elektrienergia salvestamine ja ostu-müügi võimaluste analüüs hoonetes
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Kuupäev
2024
Kättesaadav alates
12.09.2024
Autorid
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Eesti Maaülikool
Abstrakt
Elektrienergia salvestamine pakub täiendavat lahendust väga muutlikele taastuvenergiaallikate tootmisprofiilidele. Sedalaadi lahenduste puhul on oluline, et tasakaalustamine energia salvestamisel toimuks tõhusalt. Elektrienergia pakkumine peab eelkõige vastama nõudlusele ning taastuvate energiaallikate laialdane integreerimine elektrivõrku toob kaasa mitmesuguseid uusi väljakutseid elektrisüsteemide haldajatele.
Käesolevas magistritöös on antud ülevaade erinevatest elektrienergia salvestamise võimalustest, rakendustest ja siinsel turul elektrihinna kujunemisest. Analüüsitud on näidisakude integreerimise võimalusi päikeseelektrijaama aastasesse töötsüklisse koos võrgust salvestamisega arvestades hinnakõikumisi ja kaasates ühe varasema aasta ilmastikuandmed. Töö eesmärk on anda ülevaade võimalustest, antud juhul päikeseelektrijaama võimsuse ja peakaitsmest tingitud piirangu osas, ning leida seejuures elektrienergia salvestamisega ostu-müügi võimalusi näidisaasta kalendrikuu ööpäeva keskmistest elektrihindadest lähtuvalt. Lahendusena on esitatud kaks süsteemi konfiguratsiooni, mis pakuvad võrdlusvõimalusi.
Taastuvenergia tootmisele elektrienergia salvesti lisamine võimaldab elektriturule täiendavaid pakkumismahte, mis on nihkunud enam nõudluse suunas. See aga vajab tootmis- ja salvestussüsteemide ülesehituse hindamiseks meetodeid, mida on ka ülevaatlikult esitatud.
Electricity storage offers an additional solution to the highly variable production profiles of renewable energy sources. For these kinds of solutions, it is important that the balancing of energy storage takes place efficiently. First, the supply of electricity must meet the demand. But the widespread integration of renewable energy sources into the grid brings a variety of new challenges to power system managers. This master’s thesis provides an overview of various electrical energy storage possibilities, applications, and the development of electricity prices in the local market. The possibilities of integrating sample batteries into the annual operating cycle of the solar power plant with storage from the grid have been analyzed, considering price fluctuations and including the weather data of one previous year. The purpose of this work is to generate an overview of the possibilities, regarding the limitations of the solar power plant and the main fuse. Also to find the purchase and sale possibilities with the storage of electricity based on the daily average electricity prices of the month. As a solution, two system configurations are presented to provide comparison opportunities. Adding electricity storage to the production of renewable energy could create additional supply volumes to the electricity market. However, it needs methods for evaluating the design of production and storage systems, which are presented.
Electricity storage offers an additional solution to the highly variable production profiles of renewable energy sources. For these kinds of solutions, it is important that the balancing of energy storage takes place efficiently. First, the supply of electricity must meet the demand. But the widespread integration of renewable energy sources into the grid brings a variety of new challenges to power system managers. This master’s thesis provides an overview of various electrical energy storage possibilities, applications, and the development of electricity prices in the local market. The possibilities of integrating sample batteries into the annual operating cycle of the solar power plant with storage from the grid have been analyzed, considering price fluctuations and including the weather data of one previous year. The purpose of this work is to generate an overview of the possibilities, regarding the limitations of the solar power plant and the main fuse. Also to find the purchase and sale possibilities with the storage of electricity based on the daily average electricity prices of the month. As a solution, two system configurations are presented to provide comparison opportunities. Adding electricity storage to the production of renewable energy could create additional supply volumes to the electricity market. However, it needs methods for evaluating the design of production and storage systems, which are presented.
Kirjeldus
Magistritöö
Energiakasutuse õppekaval
Märksõnad
magistritööd, optimeerimine, taastuv energiaallikas, aku