Current Power Resource Assessment: A study of selected sites in Sweden and Norway
Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
The purpose of the study is to contribute to the understanding of possibilities and weaknesses concerning current power, i.e. conversion of kinetic energy in a water current. The goal of the study is to clarify the resource in rivers in Sweden and tidal currents in Norway.
A model was developed that describe the variation of the current speed at a site in Norway. The input parameters to calculate the resource were the mean maximum spring speed, MMSS, and the cross section area of the flow. The main sources of information were Norwegian pilot books and digital sea charts. Due to scarcity of quantitative information the total resource of Norway could not be calculated. However, with assumptions based on the results, the total theoretical resource could be estimated to 3.4 – 6.8 TWh and the economical to 0.5 – 1.0 TWh.
A case study was performed of Skellefteälven. Three sites were investigated. At two sites as large and as many turbines as possible were fitted. The power output was then calculated for six different cases regarding flux and depth. At the third site a study of the possibilities of low head hydro was performed. Based on the results and the assumption that units of at least 20 kW are used it was concluded that 14 Swedish rivers are of interest, 4 of them are protected from further exploitation by hydropower. Since most Swedish rivers already are exploited by conventional hydropower, further development is preferably done in close cooperation with the hydro power companies.
Place, publisher, year, edition, pages
2006. , 94 p.
UPTEC ES, ISSN 1650-8300 ; 06009
Engineering and Technology
IdentifiersURN: urn:nbn:se:uu:diva-162505OAI: oai:DiVA.org:uu-162505DiVA: diva2:460586
Master Programme in Energy Systems Engineering
Holmberg, PerNilsson, Karin
Lundin, UrbanTengblad, Ulla