Browsing NTNU Open by Author "Aaslid, Per"
Now showing items 1-10 of 10
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Integration of Power Transfer Distribution Factors and Internal Grid Constraints in Short-Term Hydropower Scheduling
Forbord, Sivert; Sølberg, Håkon (Master thesis, 2023)Med økende forbruk av elektrisk energi blir det avgjørende å maksimere utnyttelsen av våre ressurser og infrastruktur. I et land som Norge innebærer dette effektiv bruk av strømnettet og utnyttelse av vannet som er lagret ... -
Integration of Power Transfer Distribution Factors and Internal Grid Constraints in Short-Term Hydropower Scheduling
Sølberg, Håkon; Forbord, Sivert (Master thesis, 2023)Med økende forbruk av elektrisk energi blir det avgjørende å maksimere utnyttelsen av våre ressurser og infrastruktur. I et land som Norge innebærer dette effektiv bruk av strømnettet og utnyttelse av vannet som er lagret ... -
Modelling of variable speed centrifugal compressors for anti-surge control
Aaslid, Per (Master thesis, 2009)A mathematical model for simulation of gas compressor systems is developed. The model is designed for anti-surge control validation, and models a continuous flow gas compressor. The model also includes a cooler for gas ... -
Non-linear charge-based battery storage optimization model with bi-variate cubic spline constraints
Aaslid, Per; Geth, Frederik; Korpås, Magnus; Belsnes, Michael Martin; Fosso, Olav B (Peer reviewed; Journal article, 2020)Variable renewable generation demands increasing amount of flexible resources to balance the electric power system, and batteries stand out as a promising alternative. Battery models for optimization typically represent ... -
Optimal coordination of renewable sources and storage in energy-constrained power systems
Aaslid, Per (Doctoral theses at NTNU;2022:188, Doctoral thesis, 2022)Integrating high levels of variable renewable energy sources (VRESs) in power systems imperils the security of supply. Energy storage systems (ESSs) contribute both to cost reduction through increased and improved utilization ... -
Optimal microgrid operation considering battery degradation using stochastic dual dynamic programming
Aaslid, Per; Belsnes, Michael Martin; Fosso, Olav B (Chapter, 2019)Intermittent energy sources demand temporal storages to balance generation and load, and batteries stand out as an alternative. However, the lifetime is limited, and cycling depth affects the battery degradation rate. ... -
Practical Experiences from Application of a Comprehensive Simulator for Pumped Storage Hydropower Investment Decisions on a Real Investment Case
Schüller, Kristine; Aaslid, Per; Vereide, Kaspar Vatland; Skjelbred, Hans Ivar (2024 20th International Conference on the European Energy Market (EEM);, Chapter, 2024)The future electricity system is expected to include a higher share of production from renewable energy sources. This will lead to increased price volatility and thus a higher demand for short-term balancing by hydropower ... -
Pricing electricity in constrained networks dominated by stochastic renewable generation and electric energy storage
Aaslid, Per; Korpås, Magnus; Belsnes, Michael Martin; Fosso, Olav B (Peer reviewed; Journal article, 2021)This paper studies the electricity price formation in a competitive market when introducing generation from variable renewable energy technologies with zero marginal cost and electric energy storage systems. A power system ... -
Stochastic operation of energy constrained microgrids considering battery degradation
Aaslid, Per; Korpås, Magnus; Belsnes, Michael Martin; Fosso, Olav B (Peer reviewed; Journal article, 2022)Power systems with high penetration of variable renewable generation are vulnerable to periods with low generation. An alternative to retain high dispatchable generation capacity is electric energy storage that enables ... -
Stochastic Optimization of Microgrid Operation With Renewable Generation and Energy Storages
Aaslid, Per; Korpås, Magnus; Belsnes, Michael Martin; Fosso, Olav B (Journal article; Peer reviewed, 2022)The operation of energy storage systems (ESSs) in power systems where variable renewable energy sources (VRESs) and ESSs must contribute to securing the supply, can be considered as an arbitrage against scarcity. The value ...