Blar i NTNU Open på forfatter "Tomasgard, Asgeir"
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Multi market bidding strategies for demand side flexibility aggregators in electricity markets
Ottesen, Stig Ødegaard; Tomasgard, Asgeir; Fleten, Stein-Erik (Journal article; Peer reviewed, 2018)Due to the electricity systems’ increasing need for flexibility, demand side flexibility aggregation becomes more important. An issue is how to make such activities profitable, which may be obtained by selling flexibility ... -
A multi-agent system approach for optimal microgrid expansion planning under uncertainty
Mishra, Sambeet; Bordin, Chiara; Tomasgard, Asgeir; Palu, Ivo (Peer reviewed; Journal article, 2019)Power system planning for modern distribution networks is undergoing a change because of distributed power generation and grid ancillary services. The vast electricity retail utility industry with many distribution network ... -
Multi-horizon stochastic programming
Kaut, Michal; Midthun, Kjetil Trovik; Werner, Adrian; Tomasgard, Asgeir; Hellemo, Lars; Fodstad, Marte (Journal article; Peer reviewed, 2014)Infrastructure-planning models are challenging because of their combination of different time scales: while planning and building the infrastructure involves strategic decisions with time horizons of many years, one needs ... -
Multi-period facility location and capacity expansion with modular capacities and convex short-term costs
Stadlerova, Sarka; Schütz, Peter; Tomasgard, Asgeir (Peer reviewed; Journal article, 2023)In this paper, we consider a multi-period facility location problem with capacity expansion motivated by the real-world problem of establishing hydrogen production infrastructure in Norway. The problem is formulated using ... -
Multi-period facility location problems with capacity expansion: Locating hydrogen production in Norway
Štádlerová, Šárka (Doctoral theses at NTNU;2023:313, Doctoral thesis, 2023)According to the Paris Agreement on climate change, CO2 emissions must be decreased by 40% towards 2030. Decarbonization of the transportation sector is a crucial step to meet the emission reduction targets in the Paris ... -
National strategic investments in electricity transmission capacity in Europe
Aamot, Frida Arnesen; Ytterbø, Marianne (Master thesis, 2014)Optimal transmission expansion plans can be determined from a pan European point of view, but investments in transmission capacity are likely to cause re-allocations of welfare. Thus the optimal plan determined by a ... -
Nordsjøen som plattform for grønn omstilling
Mølnvik, Mona J.; Tande, John Olav Giæver; Tomasgard, Asgeir; Torsæter, Malin; Gardarsdottir, Stefania Osk; Korpås, Magnus; Skjølsvold, Tomas Moe; Heidenreich, Sara; Korsnes, Marius; Tangen, Grethe; Karlsen, Asbjørn; Aspelund, Arild; Bjørgum, Øyvind (Research report, 2021) -
The North Sea as a springboard for the green transition
Mølnvik, Mona J.; Tangen, Grethe; Tande, John Olav Giæver; Tomasgard, Asgeir; Torsæter, Malin; Gardarsdottir, Stefania Osk (Research report, 2021) -
Norway’s role in the European Energy Transition
Egging, Ruud; Tomasgard, Asgeir (Journal article; Peer reviewed, 2018)The EU has high ambitions for its clean energy transition. Reducing yearly CO2 emissions by 80% until 2050 requires large-scale implementation of renewable energy technologies and likely a large-scale electrification of ... -
Offshore Energy Hubs in the Decarbonisation of the Norwegian Continental Shelf
Zhang, Hongyu; Tomasgard, Asgeir; Knudsen, Brage Rugstad; Grossmann, Ignacio E. (Chapter, 2022)This paper studies the investment planning of a decarbonised Norwegian continental shelf energy system considering the connection and interfaces with the European energy system. A multi-horizon stochastic mixed-integer ... -
Optimal Bidding in day-ahead Spot Markets for Electricity: The Case of Wind Power in Norway
Kullmann, Carl-Erik Berentsen (Master thesis, 2012)Through the last decades, climate change and energy dependence concerns have gained increased attention. Renewable energy development has expanded, with wind power being the fastest growing technology. This thesis investigates ... -
Optimal design and cost of ship-based CO2 transport under uncertainties and fluctuations
Bjerkevedt, Vegard; Tomasgard, Asgeir; Roussanaly, Simon (Peer reviewed; Journal article, 2020)This study investigates the impact of operational fluctuations and uncertainties on the design and expected cost of ship-based CO2 transport. The model analysis is based on a two-stage stochastic investment model for a ... -
Optimal Salmon Production: Producing Smolt Under Uncertainty
Kure, Endre Hegland; Frøystein, Kristian (Master thesis, 2013)The salmon farming industry is shifting from an entrepreneurial spirit towards industrialization and cost efficiency. Large players are purchasing the small players,and the industry is consolidating. Optimization is therefore ... -
Optimal Transmission Switching under Demand Uncertainty
Prydz, Mari Hardersen; Aarsten, Heidi (Master thesis, 2015)Denne oppgaven studerer optimeringsproblemet, Optimal Transmission Switching (OTS). Motivasjonen for denne oppgaven stammer fra våre observasjoner om at testcasene som er brukt til å evaluere potensialet til dette problemet ... -
Optimal vaksinasjonsstrategi ved en influensapandemi
Njøten, Hilde Kristin (Master thesis, 2014)Denne masteroppgaven presenterer og drøfter ulike optimeringsmodeller som skal fungere som et beslutningsverktøy i forbindelse med valg av vaksinasjons- og håndteringsstrategier ved en kommende pandemi i Norge. Modellene ... -
Optimization models for the plugging and abandoning of offshore oil and gas fields
Bakker, Steffen Jaap (Doctoral theses at NTNU;2020:324, Doctoral thesis, 2020)This thesis applies operations research methods to planning problems related to the plugging and abandoning of offshore oil and gas wells. We consider two problem settings, for which we develop new models and solution ... -
Optimization of combined ship routing and inventory management in the salmon farming industry
Solhaug, Ida Elise; Ivarsøy, Kristine S. (Master thesis, 2014)Fish feed is the largest component of a salmon farmer s production costs and lostfeed days are a large cost driver. Norway s largest salmon farmer, Marine HarvestNorway, hopes to cut costs and increase reliability of feed ... -
Planning of an Offshore Well Plugging Campaign: A Vehicle Routing Approach
Bakker, Steffen J.; Aarlott, Mats Mathisen; Tomasgard, Asgeir; Midthun, Kjetil Trovik (Journal article; Peer reviewed, 2017)When a petroleum well no longer serves its purpose, the operator is required to plug and abandon (P&A) the well to avoid contamination of reservoir fluids. An increasing number of offshore wells needs to be P&A’d in the ... -
Powering Europe with North Sea offshore wind: The impact of hydrogen investments on grid infrastructure and power prices
Durakovic, Goran; Crespo del Granado, Pedro; Tomasgard, Asgeir (Peer reviewed; Journal article, 2022)Hydrogen will be a central cross-sectoral energy carrier in the decarbonization of the European energy system. This paper investigates how a large-scale deployment of green hydrogen production affects the investments in ... -
Production optimization in the salmon farming industry: Ordering smolt under uncertainty
Rynning-Tønnesen, Christine; Overaas, Sivert Thorvik (Master thesis, 2012)In the last decade the salmon farming industry has expanded rapidly and gone towards consolidation, thus the complexity of planning has increased. Therefore, the need for better planning tools has arisen. In this master ...