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Solcellers påverkan på fördelningsstation: Hur BESS kan stödja systemet
Mid Sweden University, Faculty of Science, Technology and Media, Department of Computer and Electrical Engineering (2023-).
2023 (Swedish)Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
Abstract [sv]

Detta arbete har undersökt påverkan av en ökad solcellsinstallation på fördelningsstationen FS25 Änge med hjälp av historiska data och antaganden. Det har även undersökts hur ett batterilagringssystem skulle kunna hjälpa nätet vid den ökade mängden solcellsinstallationer. Arbetet har riktat sig mot den dagen då solproduktion förväntas vara som högst samtidigt som övrig tid på året beaktats. Den komponent som varit huvudfokus är transformatorerna i nätet. Tre scenarion har kollat på där solcellsimplementering skett i graderna 100%, 70% och 50% av alla kunder under respektive nätstation. Det visade sig att det största problemet är i fördelningsstationen som är dimensionerad utefter sammanlagring. När det kommer till solproduktion går det inte räkna med sammanlagring då den producerar som högst för alla anläggningar samtidigt. Därefter diskuteras de möjligheter som finns för att hjälpa FS25 Änge under överbelastning där BESS implementerades men även flexmarknaden kom upp som en möjlighet. Avslutningsvis diskuterades framtida arbete som skulle behöva göras på detta ämne, där det arbetet som är mest aktuellt är att se påverkan hos elsystemet om det installerades batterier hos alla kunder och inte bara de som ligger under en överbelastad transformator. 

Abstract [en]

This work has examined the impact of increased PV-implementation on distribution station FS25 Änge using historical data and assumptions. It has also examined how a battery energy storage system could assist the grid with the increased amount of PV- installations. The focus of the work has been on the day when the solar production is expected to be at its highest while considering the rest of the year. The component that has been the focus is the power transformers in the grid. Three scenarios have been examined where solar cell implementation has occurred to the degrees of 100%, 70%, and 50% of all customers at each substation, respectively. It turned out that the biggest problem is in the distribution station, which is dimensioned based on aggregated storage. When it comes to solar production, aggregated storage cannot be considered as it produces at its highest for all consumers simultaneously. Furthermore, the possibilities to assist FS25 Änge during overload were discussed, where Battery Energy Storage Systems (BESS) were implemented, and the flexibility local market emerged as a potential solution. Finally, future work that needs to be done on this topic was discussed, with the most relevant being to examine the impact on the electrical system if batteries were installed for all customers, not just those under an overloaded power transformer.

Place, publisher, year, edition, pages
2023. , p. 49
Keywords [en]
PV-implementation, BESS, distribution substation, transformers.
Keywords [sv]
Solcellsimplementering, BESS, fördelningsstation, transformatorer
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:miun:diva-49180OAI: oai:DiVA.org:miun-49180DiVA, id: diva2:1792064
Subject / course
Electrical Engineering ET2
Educational program
Electric Power Engineering TEKRG 180 higher education credits
Supervisors
Examiners
Available from: 2023-08-28 Created: 2023-08-28 Last updated: 2023-08-28Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
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