• System dynamics of asynchronous generators at islanded grid operation 

      Edvardsen, Håkon Molland (Master thesis, 2014-01-23)
      It is well known that the phenomenon of self-excitation allows the asynchronous generator to operate as a standalone unit. The robustness and low cost of the asynchronous generator makes it beneficial for small hydro power ...
    • Wind energy; CFD simulation of wakes and wind turbine forces 

      Fredriksen, Tommy (Master thesis, 2015-09-18)
      Wind power is a clean and renewable energy source, which plays an important role in the world's energy landscape. When developing a wind farm it is beneficial to analyze the flow pattern in order to maximize the total ...
    • Heating of buildings with focus on measurement and control 

      Krogstad, Stian (Master thesis, 2015-09-25)
      In Norway 60% of all energy is commonly used for heating, during cold winters this number is seen to rise even higher. Any reduction in the standby power used for heating will result in large power savings. In this thesis ...
    • Thermal solar energy use: Modeling and optimization 

      Martín, Juan José Pérez (Master thesis, 2015-09-25)
      The sun in Norway is a very important source of energy due to the large number of hours of sunshine there are in the spring and summer months. For this reason this source of energy could replace the oil and part of the ...
    • Building a model library in Modelica - case study: Sundsbarm Power Plant 

      Vinnik, Iuliia (Master thesis, 2015-10-09)
      Modelica is rapidly developing programing language that allows building models of dynamic systems and analysing their operations. One of such systems is power plant, that requires constant regulation, optimization and ...
    • Model based control of run-of-river power plant Grønvollfoss 

      Ruan, Yiyang (Master thesis, 2015-10-09)
      Water level in the pondage is an important parameter for a run-of-river hydraulic power plant. Keeping a reasonably high waterfall will help to reduce the total cost of power generation. The aim of the work for this thesis ...
    • Improving snow melt systems energy performance 

      Prakhovnik, Arthur (Master thesis, 2015-10-09)
      The Object of this report is the district heating snow melt system installed in Notodden, Norway.The heat is generated by 4.7MW woodchip burner, together with oil and electrical boilers to cover peak loads.The heat is ...
    • Temperature rise in a load break switch 

      Smestad, Peter Alexander (Master thesis, 2016)
      Given a switchgear and two different types of contacts and changeing the material of the crankcase to metal rather then using plastic. There are some limits the IEC has set, with the given changes try to improve the heat ...
    • Monitoring 50/60Hz Grid Coupling – A Study In Conjunction with Wind-Energy Feed to Main Grids 

      Egbunu, Achema Hosea (Master thesis, 2016)
      This master thesis is about investigating and comparing findings for different voltage control strategies for the 60Hz grid connection using microcontroller (Arduino). The P-Control, PI-Control, PID control and Open loop ...
    • Heat transfer mechanisms in MV load break switches 

      Øygarden, Stein (Master thesis, 2017)
      This report is part of an ongoing research project between University college of Southeast Norway and ABB Power product division. This report focuses on the heat transfer from two load break switch (LBS), normally used in ...
    • Modeling of a Fault Ride Through in Transmission System with Distributed Hydropower Production 

      Tewelde, Mulubrhan Teklehaymanot (Master thesis, 2018)
      As part of the development plan for the European Transmission Network, the European Network of Transmission System Operator (ENTSO-E) proposed the creation of a Network code dealing the requirements for the grid connections ...
    • Power loss measurements in MV switchgear for Cigré-working group 

      Helland, Sandra (Master thesis, 2018)
      Working group A3.36 from Cigré is studying to what degree simulations can be used to predict the steady state temperature of MV and HV switchgear. The result of this thesis will be provided to the working group. The aim ...
    • Frequency stability in integrated synchronous power systems 

      Lyngdal, Sigrid Lauvik (Master thesis, 2018)
      In the later years, the frequency quality in the Nordic synchronous system has been reduced significantly. In order to restore the frequency quality, new requirements for the primary frequency control (FCR) is under ...
    • Model Fittng and State Estimation for Thermal Model of Synchronous Generator 

      Pandey, Madhusudhan (Master thesis, 2019)
      The power factor of a synchronous generator, in a European hydropower generation, is constrained to [0.85, 0.95], and for Norway, it is generally below 0.86. A higher power factor means more exploited power (active power), ...
    • Online monitoring and visualizing of a generator’s capability with Simulink 

      Khadka, Prabesh (Master thesis, 2019)
      The power systems today are becoming more larger, complex and are operating closer to their security and stability limits particularly due to an increase in load demands and number of environmental concerns. Voltage ...
    • Influence of thermal radiation in MV switchgear 

      Gløsmyr, Tonje (Master thesis, 2019)
      When developing MV switchgear units it is important that the finalized product is within IEC maximum temperature rise limit. When a switchgear unit is developed it is continuously tested until it meets the requirements, ...
    • Improving the design of MV load-break switch contacts 

      Thøgersen, Espen (Master thesis, 2019)
      The breaking of currents either during maintenance, faults, or overload is common in load-break switches. Because switches are usually placed before critical installations it is important that their designs implementations ...
    • Bidirectional Power Transfer between Grid and Electric Vehicle Batteries 

      Habte, Okbe Kifle (Master thesis, 2020)
      In the last decades, the significant growth of electric vehicle (EV) is promising an alternative to solve the concern about fossil fuel and global warming. However, as the number of EVs increasing significantly, it can ...
    • Thermal model parameter estimation of a hydroelectric generator using machine learning 

      Melfald, Emil (Master thesis, 2020)
      The synchronous generator have a central role in the power system, and is governed by multi-physics behaviour. A digital twin of the synchronous generator can lead to more efficient utilization in a more safe and reliable ...
    • Design of a Low-Voltage High-Power DC Power Supply for Microbial Electrochemical Synthesis 

      Sundling, Vilde (Master thesis, 2020)
      This Master’s Thesis is established to design an optimal low-voltage high-power DC power supply which can feed a biochemical system consisting of a microbial electrolysis cell, which further is connected to an existing ...