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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Faktorer som påverkar vindkraftsutbyggnaden

Söderberg, Anna-Lotta January 2012 (has links)
Wind power is expanding rapidly in Sweden. Increasing amounts of wind power sets higher requirements on balancing power and grid expansions and would affect the whole Swedish electricity system. The aim of this report is to examine the factors affecting the wind power expansion in Sweden. How many wind power plants projects will obtain building permissions and what costs and revenues can be expected? How much balancing power will be required and does a changing geographical distribution of the wind power plants reduce the need of balancing power? A survey of the county board’s official applications has been made and out of all the applications, corresponding to 80 TWh produced per year, about half of the applications are expected to obtain a permit with a major portion of them located in the north of Sweden. Especially older wind power plants, deriving revenue from Nord pool, find themselves today in a complicated financial situation. However new wind power plants with favorable wind conditions and with revenues from fixed prices are likely to be more commercially viable and less dependent on electricity certificates. The power production can be expected to even out with a greater geographical dispersion and the balancing power requirement can be estimated to 60-80 % of the totally installed wind power. During short periods, of the order of hours, the power gain or loss is usually less than 10% but during longer periods, of the order of day, the wind power can in extreme cases experience losses and gains in power up to 70 % of the installed capacity.
2

Olika faktorers inverkan på vindkraftsetableringar : en jämförelse av tre olika vindkraftsparker

Pettersson, Matilda January 2014 (has links)
Sverige har sedan år 2009 det nationella målet att producera 30 TWh vindkraftsenergi, varav 20 TWh ska komma från landbaserad vindkraft. Detta är ett viktigt delmål för att bli ett mindre fossilberoende samhälle och för att minska koldioxidutsläpp och luftföroreningar. För att nå det nationella målet om 30 TWh utgör vindkraft en viktig förnybar energikälla. Åre kommun och Bergs kommun i Jämtlands län har båda upprättat ett vindkraftstillägg till sina översiktsplaner där de har pekat ut områden möjliga för storskalig vindkraftsetablering, detta för att underlätta för exploatörer att veta på vilka platser kommunen stödjer en utredning för vindkraftsetablering. En vindkraftspark kan sedan augusti år 2009 endast få tillstånd om kommunfullmäktige i kommunen där parken planeras att etableras i tillstyrker parken. Kommunen kan alltså med ett veto stoppa ett vindkraftsprojekt, utan motivering. Således har kommunpolitiker stor inverkan på ett vindkraftsprojekts utfall. För att veta vad som har lett till tre olika vindkraftsparkers utfall har kommunens vindkraftstillägg till översiktsplanen, kommunikationen mellan exploatören och allmänheten, medias inverkan samt den kommunala vetorätten undersökts. Två av de tre studerade vindparksplanerna har fått avslag från kommunfullmäktige. Den tredje fick tillstånd 2011. Representanter från kommunernas kommunfullmäktige har intervjuats, samt representanter från varje vindbolag. Resultaten från denna studie visar att kommunens vindkraftstillägg spelar mindre roll i både val av etableringsplats och i kommunfullmäktiges val att använda det kommunala vetot. Kommunikationen mellan exploatören och allmänheten är viktig för att få lokalt stöd och genom detta få kommunal tillstyrkan. Det är svårt att dra en slutsats om hur stor inverkan media haft på vindkraftsetableringarna. Den kommunala vetorätten har haft stor inverkan på vindkraftsetableringarna och har använts för att få ut någon slags vinst av etableringarna, antingen politisk eller ekonomisk. Framtida forskning behövs kring allmänhetens och närboendes syn på vindkraftsetableringar. / Since 2009, Sweden has the national objective to produce 30 TWh wind energy, where 20 TWh should originate from land based wind turbines. This is an important sub target to become fossil fuel independent community and to reduce the carbon dioxide emmissions and air pollution. To reach the national objective of 30 TWh, wind power is an important renewable energy alternative. The municipalities of Åre and Berg in Jämtland county, Sweden, have both established a wind power supplement to their municipality layout plan, where they point out locations suitable for large scale windfarm establishments, to facilitate for the exploiter where the municipality support wind power establishments. Since august 2009, the representative assembly of the municipality must grant the establishment permission for the wind park. Hence, the municipality can stop an establishment with a veto without motivation. Thus, the representative assembly of the municipality has a large impact on the outcome of a windfarm establishment.  To understand the outcome of three wind farm establishments, the municipality layout plan, the communication between the exploiter and the general public, the impact of media and the municipality veto were studied. Two of three studied wind farm projects were dismissed by the representative municipality assembly. The third project was granted in 2011. Representatives from the assembly of municipality and from the wind farm exploiter firms were intervjued. The results from this study shows that the municipality layout plan has little impact both on the exploiters choise of location for the wind farm and on the assemblies choise to use the veto. The communication between the exploiter and the general public is important for local support and through this, a grant from the assembly. It is difficult to draw any conclution from the impact of the media from the limited data in this study. The municipality veto has a large impact on the outcome of the windfarms establishments and has been used to profit from the establishments, either political or economical. Future studies should be directed towards a survey amongst the general and local public.

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