Now showing items 99725-99744 of 100781

    • Wind farm control - Part I: A review on control system conceptsand structures 

      Andersson, Leif Erik; Anaya-Lara, Olimpo; Tande, John Olav Giæver; Merz, Karl Otto; Imsland, Lars Struen (Journal article; Peer reviewed, 2021)
      Wind farm control design is a recently new area of research that has rapidly become a key enabler for the development of large wind farm projects and their safe and efficient connection to the power grid. A comprehensive ...
    • Wind Farm Control Methods - Yawing 

      Gitmark, John Magne (Master thesis, 2016)
      The wake effect of yawing an upstream turbines is of interest in order to increase power production. In this study, the case of yawing is considered as asymmetric do to the tower and rotor rotation, and measurements have ...
    • Wind Farm Layout Optimization using Population Distributed Genetic Algorithms 

      Tangen, Helene (Master thesis, 2016)
      Wind turbine technology is a promising source of renewable energy. However, the potential of wind turbine technology can not be utilized unless the wind farm layout is efficient. The challenge with wind farm layout ...
    • Wind farm performance 

      Marjan, Ali (Master thesis, 2016)
      Performance of the wind turbine in the wind farm has been analyzed using IEC61400-12-1 wind turbine power measurement standard. Ten minutes averaged wind data was acquired from Windcube v2 LIDAR over the period of twelve ...
    • Wind farm performance - Power Analysis of a wind turbine 

      Esquinas Herrera, Alejandro (Master thesis, 2016)
      Wind conditions from a wind farm situated in Ørland were analyzed based on a ten minute measurements in order to obtain the power and efficiency curves. The results from the analysis were compared with different curves ...
    • Wind farm site selection assessment in the Greater Accra, Volta and eastern regions of Ghana : a GIS spatial multi-criteria assessment 

      Kabu, Isaiah Kabutey (Master thesis, 2016)
      Global temperatures have increased since preindustrial times and will continue to do so unless practical measures are taken to halt the emission of carbon and other ozone depleting substances. Wind energy alone has the ...
    • Wind farm voltage dip measurements 

      Marvik, Jorun Irene; Tande, John Olav Giæver; Uhlen, Kjetil (Journal article; Peer reviewed, 2014)
      This paper is based on continuous measurements of voltages and currents from three wind farms for a period of 1 year, and the focus is on voltage dips. The purpose is to get an overview of the characteristics and rate of ...
    • Wind farms and their perceived impact on local landscapes : a comparative study between China and Norway 

      Song, Linan (Master thesis, 2014)
      It is widely recognized that developing of renewable energy is a good way to reduce carbon emissions. China has set ambitious goals to increase the use of wind power. Developing wind power in rural areas is also one of the ...
    • Wind field measurements in urban environments 

      Krohg, Petter Nicolai (Master thesis, 2021)
      Ettersom verden streber etter å senke klima utslipp og forurensing blir fokuset mer og mer rettet mot fornybar energiproduksjon. Kan vind produksjon i urbane miljøer bidra til å senke både lokale og globale utslipp. Et ...
    • Wind Field Variability in Complex Terrain: Lessons from the Hardanger Bridge 

      Fenerci, Aksel; Øiseth, Ole Andre (Chapter; Peer reviewed, 2019)
      Along the Coastal Highway E39 in the western coast of Norway, Norwegian Government is planning to build several extreme bridges spanning from 1.5 to 5 km. The region is typically mountainous with deep fjords seeping inland. ...
    • Wind flow studies for drifting snow on roads / 

      Thordarson, Skuli (Dr. ingeniøravhandling, 0809-103X; 2002:82, Doctoral thesis, 2002)
      During strong winds, drifting snow causes problems on roads in many harsh winter climate countries. Increased snow-removal costs, reduced access and safety problems are typical results of excessive snowdrift sedimentation ...
    • Wind forces on bridge decks using state-of-the-art FSI methods 

      Helgedagsrud, Tore Andreas (Doctoral theses at NTNU;2019:180, Doctoral thesis, 2019)
      Several bridges with span widths that challenge present technology are currently under planning in Norway, and wind effects are among the major concerns. Traditionally, wind-structure interactions are studied experimentally ...
    • Wind in Complex Terrain - Lidar Measurements for Evaluation of CFD Simulations 

      Risan, Andrea; Lund, John Amund; Chang, Chi-Yao; Sætran, Lars Roar (Journal article; Peer reviewed, 2018)
      Computational Fluid Dynamics (CFD) is widely used to predict wind conditions for wind energy production purposes. However, as wind power development expands into areas of even more complex terrain and challenging flow ...
    • Wind in the North Sea.: Effects of offshore grid design on power system operation. 

      Bergfjord, Line (Master thesis, 2011)
      In this thesis a method was developed to evaluate and compare various offshore grid topology and capacity choices. A small power system was created for the purpose of the study, including prototypes of offshore grids. To ...
    • Wind Induced Dynamic Response of Concrete Box Girders During a Balanced Cantilevered Construction Stage 

      Helliesen, Martine Øien (Master thesis, 2013)
      In this thesis a theoretical study of wind induced dynamic response of line-like structures has been performed, followed up by calculations of the dynamic response of Dolmsundet Bridge in its critical construction stage. ...
    • Wind Load Module For CSi ETABS 

      Holst, Eirik Aasved (Master thesis, 2015)
      For korrekt dimensjonering av konstruksjoner er det viktig å medberegne miljøbelastninger, inkludert vindlaster. I Norge bestemmes vindlaster ved bruk av NS-EN 1991-1-4:2005+NA:2009. Regelverket er utformet for håndberegninger, ...
    • Wind load on feed barge 

      Liao, Taohong (Master thesis, 2022)
      Fish is a kind of sustainable food for healthy diet, and it plays an important role in fulfilling human's future needs for healthy food. Norway is the world's largest fish exporter, and nearly half of the Norwegian fish ...
    • Wind power - An assault on local landscapes or an opportunity for modernization? 

      Rygg, Bente Johnsen (Journal article; Peer reviewed, 2012)
      Wind power development has produced controversies in many places. Some people see wind power as a sustainable source of energy, others see it as destroying nature and landscapes. The opposition to wind power is often ...
    • Wind power for cooking 

      Finsås, Henrik Lund; Mjåtveit, Torbjørn Løvik (Master thesis, 2023)
      Tilgangen på elektrisitet i Tanzania har det siste tiåret vært av de raskest voksende i subsahariske Afrika, med en økende tilgang fra 7% til 37.7% mellom 2011 og 2020. Selv om tilgangen i urbane områder har nådd 73.2%, ...
    • Wind power for cooking 

      Finsås, Henrik Lund; Mjåtveit, Torbjørn Løvik (Master thesis, 2023)
      Tilgangen på elektrisitet i Tanzania har det siste tiåret vært av de raskest voksende i subsahariske Afrika, med en økende tilgang fra 7% til 37.7% mellom 2011 og 2020. Selv om tilgangen i urbane områder har nådd 73.2%, ...