• Development and validation study of a 1D analytical model for the response of reheat flames to entropy waves 

  Gant, Francesco; Gruber, Andrea; Bothien, Mirko R. (Peer reviewed; Journal article, 2020)

  Numerical simulations of laminar premixed flames burning hydrogen and methane in spontaneous ignition mode are performed by harmonically exciting the reactants’ temperature at the domain inlet. The results are compared to ...

• Launch of the FarmConners Wind Farm Control benchmark for code comparison 

  Göcmen, Tuhfe; Kölle, Konstanze; Andersen, Søren Juhl; Eguinoa, Irene; Duc, Thomas; Campagnolo, Filippo; Iribas-Latour, Mikel; Astrain, David; Bottasso, Carlo; Meyers, Johan; van Wingerden, Jan Willem; Giebel, Gregor (Peer reviewed; Journal article, 2020)

  Careful validation of the modelling and control actions is of vital importance to build confidence in the value of coordinated wind farm control (WFC). The efficiency of flow models applied to WFC should be evaluated to ...

• Expert Elicitation on Wind Farm Control 

  van Wingerden, Jan Willem; Fleming, Paul A.; Göcmen, Tuhfe; Eguinoa, Irene; Doekemeijer, Bart; Dykes, Katherine; Lawson, Michael; Simely, Eric; King, Jennifer; Astrain, David; Iribas-Latour, Mikel; Bottasso, Carlo; Meyers, Johan; Raach, Steffen; Kölle, Konstanze; Giebel, Gregor (Peer reviewed; Journal article, 2020)

  Wind farm control is an active and growing field of research in which the control actions of individual turbines in a farm are coordinated, accounting for inter-turbine aerodynamic interaction, to improve the overall ...

• Assessment of Transient NOx Reduction Potential in Wood Stoves 

  Skreiberg, Øyvind; Li, Tian; Bugge, Mette; Haugen, Nils Erland L (Peer reviewed; Journal article, 2020)

• Stochastic Load Modeling of High-Power Electric Vehicle Charging - A Norwegian Case Study 

  Ivarsøy, Eirik; Torsæter, Bendik Nybakk; Korpås, Magnus (Chapter; Peer reviewed, 2020)

  In recent years, the number of electric vehicles (EVs) has increased rapidly. Due to technological advancement, government policies and the focus on reducing greenhouse gas emission, the growth can be expected to continue. ...

• Impact of seasonal weather on forecasting of power quality disturbances in distribution grids 

  Michałowska, Katarzyna; Hoffmann, Volker; Andresen, Christian Andre (Chapter; Peer reviewed, 2020)

  Power supply disruptions, including short-time disturbances, can lead to large direct and indirect financial losses. The ability to predict the risk of these disturbances allows for preventive actions and increases the ...

• Deep Reinforcement Learning for Long Term Hydropower Production Scheduling 

  Riemer-Sørensen, Signe; Rosenlund, Gjert Hovland (Chapter; Peer reviewed, 2020)

  We explore the use of deep reinforcement learning to provide strategies for long term scheduling of hydropower production. We consider a use-case where the aim is to optimise the yearly revenue given week-by-week inflows ...

• Comparative Study of Event Prediction in Power Grids using Supervised Machine Learning Methods 

  Høiem, Kristian Wang; Santi, Vemund Mehl; Torsæter, Bendik Nybakk; Langseth, Helge; Andresen, Christian Andre; Rosenlund, Gjert Hovland (Chapter; Peer reviewed, 2020)

  There is a growing interest in applying machine learning methods on large amounts of data to solve complex problems, such as prediction of events and disturbances in the power system. This paper is a comparative study of ...

• Sizing Electric Battery Storage System for Prosumer Villas 

  Andresen, Christian Andre; Sæle, Hanne; Degefa, Merkebu Zenebe (Chapter; Peer reviewed, 2020)

  This paper studies the electricity consumption of 5 villas in the south of Norway and estimates the effect of utilizing batteries as a means to reduce peak load for each villa. High-resolution field data on the consumption ...

• Characterization of Residues from Entrained Flow Gasification of Wood 

  Wang, Liang; Seljeskog, Morten; Khalil, Roger Antoine; Bakken, Jørn; Carlsson, Per; Skreiberg, Øyvind (Peer reviewed; Journal article, 2020)

• Improved process control by surface temperature-controlled drying on the example of sweet potatoes 

  Bantle, Michael; Kopp, Christian Andre; Claussen, Ingrid Camilla (Others, 2019)

  Convective drying of food has a big impact on the quality of the product in terms of sensory quality and energy consumption. The temperature of the product during the drying process is a major parameter since exceeding can ...

• Status of waste-to-energy in Germany, Part I ? Waste treatment facilities 

  Weber, Kathrin; Quicker, Peter; Hanewinkel, Jörg; Flamme, Sabine (Peer reviewed; Journal article, 2020)

  This study gives a detailed overview over the German waste-to-energy sector in 2015. The aim is to quantify the available treatment capacities and the energetic potential of waste in Germany. The work is based on an extensive ...

• The dynamics of solar prosuming: Exploring interconnections between actor groups in Norway 

  Jackson Inderberg, Tor Håkon; Sæle, Hanne; Westskog, Hege; Winter, T. (Peer reviewed; Journal article, 2020)

  Solar prosuming is an emerging phenomenon in which many actor groups are involved in shaping new solutions. Here we study national policymakers, relevant stakeholders such as grid companies, and the prosumers themselves – ...

• A Stochastic MPEC Approach for Grid Tariff Design with Demand-Side Flexibility 

  Askeland, Magnus; Burandt, Thorsten; Gabriel, Steven A. (Peer reviewed; Journal article, 2020)

  As the end-users increasingly can provide fexibility to the power system, it is important to consider how this fexibility can be activated as a resource for the grid. Electricity network tarifs is one option that can be ...

• Electric Vehicles Demonstration Projects - An Overview Across Europe 

  Marinelli, Mattia; Calearo, Lisa; Ried, Sabrina; Pfab, Xavier; Carbera, Julio Cesar Diaz; Spalthoff, Christian; Braun, Martin; Sæle, Hanne; Torsæter, Bendik Nybakk; Divshali, Poria Hasanpor; Hänninen, Seppo; Ceraolo, Massimo; Barsali, Stefano; Larsson, Mats; Magdowski, Annika; Gimenez, Laura; Fernandez, Gregorio (Chapter; Peer reviewed, 2020)

  This paper gathers experiences and results from several demonstration projects in the field of grid integration of electric vehicles. The analyzed research projects are selected among research institutes and universities ...

• Measurement-based frequency-dependent model of a HVDC transformer for electromagnetic transient studies 

  Gustavsen, Bjørn; Vernay, Yannick (Peer reviewed; Journal article, 2020)

  A wide-band, frequency-dependent five-terminal model is developed that represents one HVDC transformer unit in the French-English IFA2000 HVDC interconnection. Three such interconnected 1-ph units constitute one 3-ph ...

• Efficiency in the process industry: Three thermodynamic tools for better resource use 

  Kjelstrup, Signe; Magnanelli, Elisa (Peer reviewed; Journal article, 2020)

  In a world where resources are limited and their use will necessary have an impact, efficient handling of resources becomes essential. This review concerns three thermodynamic tools that can be systematically used to ...

• Pressure-Dependent Propagation of Streamers under Step Voltage in a long Point-Plane Gap in Transformer Oil 

  Linhjell, Dag; Lundgaard, Lars Esben; Unge, M.; Hjortstam, Olof (Peer reviewed; Journal article, 2020)

  The effect of pressure on positive and negative streamer propagation in a mineral transformer oil is studied in an 80 mm point-plane gap under step voltage. Increased pressure causes reduced stopping length for non-breakdown ...

• A proposed methodology for modelling the combined load of electric roads and households for long-term grid planning 

  Berg, Kjersti; Hjelkrem, Odd Andre; Torsæter, Bendik Nybakk (International Conference on the European Energy Market;2020, Chapter; Peer reviewed, 2020)

  The number of electric vehicles (EV) is increasing rapidly, and it is not yet sure how the grid infrastructure will be built, and how this will affect the power system. One option for charging EVs is a dynamic wireless ...

• Assessment of flexibility in different ancillary services for the power system 

  Sæle, Hanne; Morch, Andrei Z; Degefa, Merkebu Zenebe; Oleinikova, Irina (International Conference on the European Energy Market;2020, Chapter; Peer reviewed, 2020)

  To handle the changing power system and enable the energy transformation, several actions are needed, where the increase of digitalization, automation and more substantial production variability implies a need for flexibility. ...

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