• Hydraulic design of a Francis turbine that will be influenced by sediment erosion 

      Dahl, Gjert Aaberge (Master thesis, 2014)
      High amount of sediments in the Himalayas are at present a large problem for power companies in Nepal, preventing them of utilizing the large amount of hydro power available in the area. In the Jhimruk power plant the ...
    • Hydro Power Reservoir Aggregation via Genetic Algorithms 

      Löschenbrand, Markus; Korpås, Magnus (Journal article; Peer reviewed, 2017)
      Electrical power systems with a high share of hydro power in their generation portfolio tend to display distinct behavior. Low generation cost and the possibility of peak shaving create a high amount of flexibility. However, ...
    • Hydro power scheduling in multi-owner river systems 

      Busuttil, Marie (Master thesis, 2010)
      1. Initial problem formulation 2. Iterative approach building for one reservoir 3. Testing for two cascaded reservoirs 4. Testing for four cascaded reservoirs 5. Further work
    • Hydro Turbine and Governor Modelling: Electric - Hydraulic Interaction 

      Lucero Tenorio, Luz Alexandra (Master thesis, 2010)
      This Master s Thesis work deals with the development of improved hydro turbine models for the evaluation of a hydraulic power generating system performance in response to small disturbances in power system analysis tool. ...
    • Hydro-Thermal Multi-Market Optimization 

      Nordén, Siri Hartvedt (Master thesis, 2019)
      Fundamental optimering av kraftsystemet er essensielt for å anskaffe korrekt beslutningsstøtte for investeringer og for optimal drift av kraftsystemet. Med en økt andel av ukontrollerbare energikilder og utfasing av kull ...
    • Hydro-thermal power market equilibrium with price-making hydropower producers 

      Löschenbrand, Markus; Wei, Wei; Liu, Feng (Journal article; Peer reviewed, 2018)
      This paper formulates an electricity market dominated by price-making hydro-thermal generation. Generation companies optimize their unit commitment, scheduling and bidding decisions simultaneously as a Mixed Integer ...
    • Hydroacoustic Channel Emulator - HACE 

      Hauge, Leo Heggem; Hetland, Frank Iversen (Master thesis, 2015)
      Kongsberg Maritime wanted a channel emulator for testing their hydroacoustic equipment before deploying it at sea. The benefits of such a system are that it detects problems in an earlier phase of development, thus ...
    • Hydroacoustically Aided Inertial Navigation for Joint Position and Attitude Estimation in Absence of Magnetic Field Measurements 

      Stovner, Bård Bakken; Johansen, Tor Arne (Journal article; Peer reviewed, 2017)
      When an underwater intervention vehicle is close to large metallic structures, e.g. subsea oil and gas facilities, magnetic disturbances might render magnetic field measurements biased or useless. This loss of information ...
    • Hydrogen Electric Airplanes: A Disruptive Technological Path to Clean Up the Aviation Sector 

      Nøland, Jonas Kristiansen (Peer reviewed; Journal article, 2021)
      Recently, the COVID-19 pandemic has been a painful reminder of the vulnerability of the aerospace industry. It is currently facing challenges with costs, expensive fuels, and carbon emissions. In recovering the industry, ...
    • Hydrogen Production from Wind and Hydro Power in Constrained Transmission Grids 

      Bødal, Espen Flo (Doctoral theses at NTNU;2022:54, Doctoral thesis, 2022)
      Hydrogen (H2) production from variable renewable energy (VRE) sources can be an important technology for reducing CO2 emissions. Integrating electrolytic H2 production into the electricity system can contribute to this ...
    • Hydrogen Production from Wind and Solar Power in Weak Grids in Norway 

      Pinel, Dimitri Quentin Alexis (Master thesis, 2017)
      In this thesis, the possibility of implementing an hydrogen factory in the north of Norway was studied through the simulation of the system and an optimization of the needed investment with the exclusion of the grid and ...
    • Hydrogen Sulfide Detection through Salmon Juvenile Monitoring with Stereo Vision and Machine Learning 

      Eide, Lotte (Master thesis, 2023)
      Bakgrunn: Utvidelsen av landbaserte produksjonsfaser i lakseoppdrett er en voksende trend innen akvakulturindustrien. Reduksjon av tid tilbrakt på sjøen kan gi mange fordeler, men utviklingen av landbaserte fasiliteter ...
    • Hydrogen-enhanced fatigue crack growth behaviors in a ferritic Fe-3wt%Si steel studied by fractography and dislocation structure analysis 

      Wan, Di; Alvaro, Antonio; Olden, Vigdis; Barnoush, Afrooz (Journal article; Peer reviewed, 2019)
      The effect of hydrogen (H) on the fatigue behavior is of significant importance for metallic structures. In this study, the hydrogen-enhanced fatigue crack growth rate (FCGR) tests on in-situ electrochemically H-charged ...
    • Hydropower optimization using model-based Reinforcement Learning 

      Ågotnes, Henrik (Master thesis, 2023)
      En av de mest effektive måtene å lagre energi på er ved å planlegge produksjonen av vannkraft slik at kraft produseres når det er mest gunstig og at vannet i andre perioder reserveres. I det nordiske kraftmarkedet prøver ...
    • Hydropower Scheduling with State-Dependent Discharge Constraints: An SDDP Approach 

      Helseth, Arild; Mo, Birger; Hågenvik, Hans Olaf; Schäffer, Linn Emelie (Peer reviewed; Journal article, 2022)
      Environmental constraints in hydropower systems serve to ensure sustainable use of water resources. Through accurate treatment in hydropower scheduling, one seeks to respect such constraints in the planning phase while ...
    • HydroStator : hovedfunn og resultater i KPN-prosjektet HydroStator 

      Berg, Gunnar; Eberg, Espen; Aakre, Torstein Grav; Ildstad, Erling; Kantar, Emre; Nysveen, Arne (SINTEF Rapport;, Research report, 2022)
      Modeller som beskriver temperatur- og frekvensavhengighet til elektriske delutladninger er utviklet og viser at tilstandskontroll med den mer praktiske VLF-metoden som benytter 0,1 Hz høyspenning er representativ for 50 ...
    • Hydrothermal scheduling in the continuous-time framework 

      Naversen, Christian Øyn; Helseth, Arild; Li, Bosong; Parvania, Masood; Farahmand, Hossein; Catalao, João P.S. (Peer reviewed; Journal article, 2020)
      Continuous-time optimization models have successfully been used to capture the impact of ramping limitations in power systems. In this paper, the continuous-time framework is adapted to model flexible hydropower resources ...
    • Hyperbolic geometry for colour metrics 

      Farup, Ivar (Journal article; Peer reviewed, 2014)
      It is well established from both colour difference and colour order perpectives that the colour space cannot be Euclidean. In spite of this, most colour spaces still in use today are Euclidean, and the best Euclidean colour ...
    • Hyperbolic geometry for colour metrics 

      Farup, Ivar (Journal article; Peer reviewed, 2014)
      It is well established from both colour difference and colour order perpectives that the colour space cannot be Euclidean. In spite of this, most colour spaces still in use today are Euclidean, and the best Euclidean colour ...
    • Hyperbolsk geometri i et historisk perspektiv 

      Smestad, Bjørn-Terje Gylder (Master thesis, 2009)
      Hilbert (1862 - 1943) fulgte Euklid (rundt år 300 før vanlig tidsregning) i sin oppbygging av den nøytrale, euklidske og hyperbolske geometrien. Hilberts aksiomer representerer i så måte en historisk viktig del av geometri. ...