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Optimering av ett mellanspänningsnät: Optimization of a medium voltage electricity grid
Umeå University, Faculty of Science and Technology, Department of Applied Physics and Electronics.
2015 (Swedish)Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
Abstract [sv]

EU vill genom att använda energin effektivare sänka sina energikostnader och minska sitt beroende av externa leverantörer av olja och gas vilket leder till att miljön skyddas. Av den anledningen krävs att energieffektiviteten ökas från produktion till den slutgiltiga konsumtionen inom EU. Jämtkraft är miljöcertifierat enligt ISO 14001 och arbetar därför årligen mot uppsatta miljömål. Detta examensarbete har studerat ett av dessa mål, möjligheten att minska överföringsförluster i ett av Jämtkrafts mellanspänningsnät. Området som examensarbetet baseras på är fördelningsstation Nälden FS23. Denna studie har undersökt möjligheterna att minska överföringsförluster i sex utgående linjer, från fördelningsstation till kunderna. Denna studie visar att det finns potential att minska överföringsförluster genom att öka spänningen i nätet. En direkt åtgärd och en långsiktig åtgärd har presenterats med olika potential. Den direkta åtgärden gör det möjligt att minska de årliga överföringsförlusterna med 6 MWh och det långsiktiga alternativet gör det möjligt att minska de årliga överföringsförlusterna i det studerade området med 14 MWh.

Abstract [en]

EU wants to reduce their energy costs and reduce its dependence on external suppliers of oil and gas by using energy more efficiently which leads to protection of the environment. For that reason it is crucial that energy efficiency is increased from production to final consumption in the EU. Jämtkraft is environmentally certified according to ISO 14001 and are therefore working yearly on environmental goals. This degree project has studied one of those goals, the opportunity to reduce transmission losses in one of Jämtkrafts medium voltage electricity grid. The area which this degree project is based on is the distribution station Nälden FS23. This study has examined the possibilities of decreasing transmission losses in six outgoing lines, from distribution station to customers. This study shows that there is potential to reduce transmission losses by increasing the voltage in the grid. A direct action as well as a long-term action was presented with different potential. A direct action makes it possible to reduce yearly transmission losses by 6 MWh and the long-term alternative makes it possible to reduce the yearly transmission losses in the studied area by 14 MWh

Place, publisher, year, edition, pages
2015. , 48 p.
Series
EL, 1518
Keyword [sv]
Mellanspänningsnät, Transformator, Optimering, Lindningsomkopplare
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:umu:diva-104889OAI: oai:DiVA.org:umu-104889DiVA: diva2:821456
External cooperation
Jämtkraft AB
Educational program
Högskoleingenjörsprogrammet i Elkraftteknik - nätbaserat
Presentation
, Umea
Supervisors
Examiners
Available from: 2015-06-18 Created: 2015-06-15 Last updated: 2015-06-18Bibliographically approved

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CiteExportLink to record
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