I completed my PhD degree within thermochemical conversion of biomass in molten salts at the Norwegian University of Life Sciences (NMBU) in 2014. After the PhD period, I worked as a post doctoral researcher within CO2 capture in molten salts, before I started as associate professor within energy physics at REALTEK in 2018.
My main research field is currently within sustainable power systems of the future. Topics that interest me are power flexibility, smart grids and integration of variable renewable energy in future power systems. I am also involved in several projects related to molten salt technology.
Fagfelt
- Digital power systems
- Molten salt technology
- CO2 capture
- Bioenergy
- Convection in porous media
Publikasjoner
Liste med publikasjoner fra min forskning. (Cristin)
Iveland, Sondre G.; Westbye, Alexander; Marchetti, Jorge M.; Olsen, Espen; Nygård, Heidi S. A kinetic model of CO2 absorption in molten CaO-CaF2-CaCl2. Electrochemistry 92 (4), 043014-043014
Nygård, Heidi S.; Olerud, Ruth; Lunde, Petter. Evaluation of battery energy storage systems (BESS) in the Norwegian power grid to cope with increased vehicle electrification. CIGRE Paris Session 2024.
Opstad, Aurora; Bakken, Bjørn Harald; Nygård, Heidi S.; Doorman, Gerard; Sevdari, Kristian. Flexibility from electric vehicles – residential charging coincidence factors in Norway. CIGRE Paris Session 2024.
Onsaker, Thorbjørn Lund; Nygård, Heidi S.; Gomila, Damiá; Colet, Pere; Mikut, Ralf; Jumar, Richard; Maass, Heiko; Kühnapfel, Uwe; Hagenmeyer, Veit; Schäfer, Benjamin. Predicting the power grid frequency of European Islands. Journal of Physics: Complexity 4.1, 2023, 015012.
Trebbien, Julius; Pütz, Sebastian; Schäfer, Benjamin; Nygård, Heidi S.; Gorjão, Leonardo Rydin; Witthaut, Dirk. Probabilistic forecasting of Day-Ahead Electricity Prices and their Volatility with LSTMs, 2023 IEEE PES Innovative Smart Grid Technologies Europe (ISGT EUROPE), Grenoble, France (2023)
Nygård, Heidi S.; Mørch, Ingrid Maria; Bergland, Olvar. Smart charging of electric vehicles based on scheduling theory, 27th International Conference on Electricity Distribution (CIRED 2023), pp.3889-3893.
Martinsen, Thomas; Devik, Georg; Nygård, Heidi S. Load scheduling and V2G to minimize power demand-exploring potential for airport parking facility, Norway, 27th International Conference on Electricity Distribution (CIRED 2023), pp.3324-3327.
Ollé, Plana P.; Farrukh, Farhan; Thoma, Malte; Miltzer, Gesa, Nygård, Heidi S. Business case of DSO peak shaving to reduce capacity payments to upstream network operators, 27th International Conference on Electricity Distribution (CIRED 2023), pp. 1754-1758.
Ollé, Plana P.; Farrukh, Farhan; Mazza, Andrea; Nygård, Heidi S. Business, regulatory, and technical challenges for integration of network aware algorithms in local flexibility markets, 27th International Conference on Electricity Distribution (CIRED 2023), pp. 1661-1665.
Farrukh, Farhan; Dunks, Ciara; Dypvik, Per Olav, Nygård, Heidi S. Investment planning for electrification of transport in an industrial port, 27th International Conference on Electricity Distribution (CIRED 2023), pp. 1675-1679.
Redhu, Surender; Raja, Rameez; Bremdal, Bernt A.; Nygård, Heidi S. Cognitive data fusion for improving flexibility in smart homes, 27th International Conference on Electricity Distribution (CIRED 2023), pp. 2848-2852.
Iveland, Sondre Grevle and Olsen, Espen and Westbye, Alexander and Nygård, Heidi S., Experimental Validation of Carbon Capture in Molten Salts at Low CO2 Concentrations (1-5 Vol%) (GHGT-16, 2022).
Niazi, Sepideh; Nygård, Heidi S.; Reis, Bruno; to Baben, Moritz. Consistent thermodynamic modeling of H2O-HCl-KOH-KCl between 200 K and 1,000 K, Chemical Engineering Science, Volume 264, 2022, 118209.
Grøtan, Åshild; Martinsen, Thomas; Tveitane, Rasmus Gåsemyr; Nygård, Heidi S. The potential for load shifting with flexible EV charging at Oslo airport Gardermoen, CIRED Porto Workshop 2022: E-mobility and power distribution systems, 2022 p. 975-979.
Niazi, Sepideh; Olsen, Espen; Nygård, Heidi S. Electrochemical removal of Cu, Fe and Mn from molten ZnCl2:KCl:NaCl, Separation and Purification Technology 2022, Volume 299, 121705.
Nygård, Heidi S.; Ruud, Nils Amund Rusås; Olsen, Espen. Investigation of Sulfation of CaO and CaCO3 in Eutectic CaF2-CaCl2, Energy & Fuels 2022, 36, 12, 6343-6352.
Niazi, Sepideh; Bonk, Alexander; Hanke, Andrea; to Baben, Moritz; Reis, Bruno; Olsen, Espen; Nygård, Heidi S. Thermal stability, hydrolysis and thermodynamic properties of molten KCl-CuCl, Materialia 2022, Volume 21, 101296
Niazi, Sepideh; Olsen, Espen; Nygård, Heidi S. Hydrolysis of eutectic compositions in the ZnCl2:KCl:NaCl ternary system and effect of adding ZnO. Journal of Molecular Liquids 2020, 317, 114069.
Ottesen, Stig Ø.; Haug, Martin; Nygård, Heidi S. A Framework for Offering Short-Term Demand-Side Flexibility to a Flexibility Marketplace. Energies 2020, 13 (14), 3612.
Grøtan, Åshild; Olsen, Espen; Nygård, Heidi S. Carbon Capture with Metal Oxides in Molten Salts: MgO, SrO and CaO as Sorbents. SINTEF proceedings 2019 (4) s. 63-75
Nygård, Heidi S.; Meyer, Julien; Di Felice, Luca; Eldrup, Nils Henrik; Haug, Alf Tore; Olsen, Espen. Techno-economic study of the CCMS Technology for CO2 capture from ferro-silicon production. SINTEF proceedings 2019 (4) s. 63-75
Nygård, Heidi S; Hansen, Mari; Alhaj-Saleh, Yasen; Palimaka, Piotr; Pietrzyk, Stanislaw; Olsen, Espen. Experimental evaluation of chemical systems for CO2 capture by CaO in eutectic CaF2-CaCl2. AIMS Energy 2019. 7. p. 619-633.
Olsen, Espen; Hansen, Maria; Nygård, Heidi S. Hydrolysis of molten CaCl2-CaF2 with additions of CaO, AIMS Energy 2017; 5, (6), p. 873-886.
Nygård, Heidi S.; Tomkute, Viktorija; Olsen, Espen. Kinetics of CO2 absorption by calcium looping in molten halide salts, Energy Procedia 2017; 114, p. 250-258.
Nygård, Heidi S.; Olsen, Espen. Molten salt pyrolysis of milled beech wood using an electrostatic precipitator for oil collection, AIMS Energy 2015; 3 (3), p. 284-296.
Nygård, Heidi S.; Olsen, Espen. Effect of salt composition and temperature on the thermal behavior of beech wood particles in molten salt pyrolysis. Energy Procedia 2014; 58, p. 221-228.
Barletta, Antonio; Tyvand, Peder A.; Nygård, Heidi S. Onset of thermal convection in a porous layer with mixed boundary conditions, Journal of Engineering Mathematics 2015; 91, p. 105-120.
Nygård, Heidi S.; Danielsen, Filip; Olsen, Espen. Thermal History of Wood Particles in Molten Salt Pyrolysis. Energy & Fuels 2012; 26 (10) p. 6419-6425.
Westerhof, R. J. M.; Nygård, Heidi S.; Swaaij, W. P. M. van; Kersten, S. R. A.; Brilman, D. W. F.. Effect of Particle Geometry and Microstructure on Fast Pyrolysis of Beech Wood. Energy & Fuels 2012; 26 (4) p. 2274-2280.
Nygård, Heidi S.; Olsen, Espen. Review of thermal processing of biomass and waste in molten salts for production of renewable fuels and chemicals. International Journal of Low-Carbon Technologies 2012; 7 (4) p. 318-324.
Nygård, Heidi S.; Tyvand, Peder A.. Onset of Convection in a Porous Rectangle with Buoyancy Along an Open Sidewall. Transport in Porous Media 2011; 90 (2) p. 403-420.
Nygård, Heidi S.; Tyvand, Peder A. Onset of Thermal Convection in a Vertical Porous Cylinder with a Partly Conducting and Partly Penetrative Cylinder Wall. Transport in Porous Media 2011; 86 (1) p. 229-241.
Nygård, Heidi S.; Tyvand, Peder A. Onset of Convection in a Porous Box with Partly Conducting and Partly Penetrative Sidewalls. Transport in Porous Media 2010; 84 (1), p 55-73.
Undervisning
Forskning og prosjekter
Forskningsprosjekter med nettside utenfor NMBU
Mer om meg og CV
Supervision of master students
2024
- Improving Dynamic Line Rating: The potential for improved ampacity predictions by a smart neighboring method (Ine Lovise Aarnes, 2024)
- Analyse av nettleieordningen innført 1. juli 2022 som insentiv til implisitt forbrukerfleksibilitet (Emma Sand, 2024)
- Load shifting potential of local energy communities with seasonal thermal energy storage (Lill Mari Engan, 2024)
- CCMS: Eksperimentell evaluering av konverteringsgrad ved forskjellige prosessparametere for karbonfangst med CaO i CaF2-CaCl2 saltsmelte (Mathilde Jordal Breivik, 2024)
- Utfordringer og muligheter med elbiler og effektivisering i fremtidens energisystem (Marie Eide Roalkvam, 2024)
2023
- Predicting electricity demand using machine learning: Case study of Oslo Airport Gardermoen (Sigurd Grøtan, 2023)
- Simulering av styringsalgoritmer for lastflytting av industrielle varmtvannsberedere på Oslo Lufthavn Gardermoen (Njål Kolberg Olsen, 2023)
- Økonomisk potensial og ladestrategi for elbillading gjennom lastflytting: En casestudie av Gardermoen Parkering AS (Astrid Lye Moum, 2023)
- MILP optimering av BESS som multitjenestebatteri for en industribedrift - med utgangspunkt i Ny Plast i Aremark (Bjørnar Djupevik Hagen, 2023)
- KILE-kostnadenes påvirkning på nettselskapenes betalingsvillighet for forbrukerfleksibilitet ved potensielle strømbrudd forårsaket av overbelastning (Nina Zeh, 2023)
- Observasjoner og nødvendige hensyn ved plassering av små modulære reaktorer (SMR) i Bergen og omland fra et kraftsystemperspektiv (Margrete Synnevaag Malm, 2023)
- Mapping of residential consumer flexibility from electric vehicles and electric heating (Aurora Opstad, 2023)
- Simulering av lastprofiler for ulke utforminger av en offentlig ladestasjon for elektriske lastebiler: Casestudie av en ladestasjon i Vestby (Lina Bodil Grünbeck, 2023)
- Indirect forecasting of power generation from a PV power plant through data-driven and physical methods (Sigrid Vøllo, 2023)
- Simulering og lønnsomhetsanalyse av husbatteri for å redusere elektriske effekttopper (Hedda Mathilde Jørgensen, 2023)
- Evaluation of battery energy storage systems in the Norwegian power grid to cope with increased vehicle electrification (Ruth Olerud, 2023)
2022
- Potensial for redusert effektuttak ved ladeplan av elbiler på en langtirdsparkeringsplass: en studie av Gardermoen Parkering (Georg Devik, 2022)
- Prediksjon av elektrisitetsbruk i næringsbygg: Casestudie av Oslo Lufthavn Gardermoen (Kjersti Rustad Kvisberg, 2022)
- Systemanalyse av kjølekretsen til karbonfangstanlegget på Klemetsrud (Tord Kordahl Mikkelsen, 2022 - unntatt offentligheten)
- Simulering av lading og kvantifisering av fleksibilitet for en modellert elbilflåte ved boligfelt: Casestudie av Tanberghøgda i Hønefoss (Kristoffer Straume Lyslo, 2022)
- Reduksjon av termiske effekttopper i fjernvarmenett – en casestudie av Veterinærhøgskolen på Ås (Ida Elise Råbøl Mæhlum, 2022)
- Sjølvkonsum av solenergi med bruk av batteri: Degradering, lønsemd og fleksibilitet. Med utgangspunkt i Tanberghøgda bustadfelt (Åsmund Breie, 2022)
- Simulering av bruk av batterier til å redusere elektriske effekttopper: En casestudie av Bioteknologibygningen på Campus Ås (Fime Frederika Pijfers, 2022)
- Deep reinforcement learning for vehicle-to-grid control of long-term parked EVs: A case study of Oslo airport Gardermoen (Filip Kristoff Ørn, 2022)
- Pattern-based Prediction of Islanded Power Grid Frequency (Thorbjørn Lund Onsaker, 2022)
- Power Peak Shaving: How to Schedule Charging of Electric Vehicles and Organize Mutually Beneficial Vehicle to Grid (V2G) (Ingrid Maria Mørch, 2022)
- Stacked LSTM for Wind Turbine Yaw Fault FOrecasting Based on SCADA Data Analysis (Liubou Khorava, 2022)
- Applying a Top-Down Estimation of Inertia in the Nordic Power System (Lars-Petter Andersen, 2022)
2021
- Effektbehov og varmeavgivelse fra bildediagnostisk utstyr ved Sykehuset Østfold Kalnes (Matteus Hjelmberg, 2021)
- Assessing Whether Connection of Solar Home Systems Can Improve Electricity Access in Off-Grid Areas (Daniel Gulbrandsen, 2021)
- An analysis of electric vehicle user-behaviour at a smart charging station (Andreas Sandvik Høimyr, 2021)
- Optimizing production time of electrolyzers powered by off-grid PV-arrays (Sebastian Kihle, 2021 - unntatt offentligheten)
- Fleksibilitet i parkerte elbiler ved næringsbygg En casestudie av Oslo lufthavn Gardermoen (Rasmus Gåsemyr Tveitane, 2021)
- Betydningen av endret adferd som følge av Covid-19 for lading av elbiler i borettslag (Marie Kolvik Valøy, 2021)
- Prediksjon av feil i vindturbiner på Smøa vindpark ved bruk av dyp læring (Sindre Tallaksrud, 2021)
- Electrochemical Removal of Impurities in Molten ZnCl2-NaCl-KCl (Helene Flakke, 2021)
2020
- Verification of Probalistic Predictions for Reliability Analysis in the Norwegian Transmission System (Yasmin Bashir Sheikh-Mohamed, 2020)
- Harmonization of power from PV systems to electrical distribution networks - a literature review (Viel Jaren Heitmann, 2020)
- Carbon Capture in Molten Salts: An extensive survey of chemical systems with MgO as sorbent (Petter Nygård Lerøen, 2020)
- Second-Life Electric Vehicle Batteries in the Norwegian Power System: A Feasibility Study (Karin Tråer, 2020)
- The End User’s Incentives to Reduce Peak Power Demand from Power Tariffs Using a Battery Energy Storage System (Svein Gjerdåker, 2020)
- The State-of-Art of Sector Coupling in Europe – a Literature Review (Marthe Verbeeten, 2020)
2019
- Methodology for Assessing Short-term Flexibility in Demand-side Assets (Martin Haug, 2019)
- A Data-driven Approach for Power Loss Detection in Utility-scale Solar Power Plants (Meron Haile Tesfazion, 2019)
- Prediction of Fault Events in the Norwegian Electrical Power System Using Deep Learning: a Sequential Approach (Kristian Wang Høiem, 2019)
- Decision Support Tool for Procurement in the m-FRR Capacity Market – an Initial Study (Alexandra Østreng, 2019)
- Contribution with Frequency Control Ancillary Services (FCAS) from Wind Power – a Literature Review (Mariusz Butryn, 2019)
- Carbon Capture with Metal Oxides in Molten Salts: MgO, SrO and CaO as sorbents (Åshild Grøtan, 2019).
Supervision of PhD students
- Data driven approach for prediction of power flexibility (Åshild Grøtan, 2021 -)
- Modellering av karbonfangst i saltsmelter (Sondre Grevle Iveland, 2021 -)
- Experimental and theoretical evaluation of thermodynamic properties of low melting chlorides suitable for liquefaction of biomass (Sepideh Niazi, 2019 - 2022)