Blar i NTNU Open på forfatter "Skjelbred, Hans Ivar"

Adaptively Learned Modeling for a Digital Twin of Hydropower Turbines with Application to a Pilot Testing System

Wang, Hong; Ou, Shiqi; Dahlhaug, Ole Gunnar; Storli, Pål-Tore Selbo; Skjelbred, Hans Ivar; Vilberg, Ingrid Kristine (Peer reviewed; Journal article, 2023)

In the development of a digital twin (DT) for hydropower turbines, dynamic modeling of the system (e.g., penstock, turbine, speed control) is crucial, along with all the necessary data interface, virtualization, and dashboard ...

An overview on formulations and optimization methods for the unit-based short-term hydro scheduling problem

Kong, Jiehong; Skjelbred, Hans Ivar; Fosso, Olav B (Journal article; Peer reviewed, 2019)

The short-term hydro scheduling (STHS) problem aims at determining the optimal power generation schedules for either a single hydropower plant or an integrated system of cascaded watercourses during a time horizon from a ...

Dynamic incorporation of nonlinearity into MILP formulation for short-term hydro scheduling

Skjelbred, Hans Ivar; Kong, Jiehong; Fosso, Olav B (Journal article; Peer reviewed, 2019)

Optimization tools are widely used for solving the short-term hydro scheduling (STHS) problem in a cascaded hydro system. In a mixed integer linear programming (MILP)-based formulation, the nonlinear and non-convex hydropower ...

Impact of energy pricing regimes on production schedules under solar-hydro hybridization

Kong, Jiehong; Sheppard, Alexandra Jane; Nøvik, Hanne; Engelstad, Øyvind; Fjelldal, Bjørnar; Klæboe, Gro; Skjelbred, Hans Ivar (Chapter, 2023)

Hybridization of complementary energy production increases system flexibility and allows optimization of energy and resource availability. Hydropower and floating solar photovoltaics (FPV) have a high potential for ...

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 ...

Machine Learning for Hydropower Scheduling: State of the Art and Future Research Directions

Bordin, Chiara; Skjelbred, Hans Ivar; Kong, Jiehong; Yang, Zhirong (Peer reviewed; Journal article, 2020)

This paper investigates and discusses the current and future role of machine learning (ML) within the hydropower sector. An overview of the main applications of ML in the field of hydropower operations is presented to show ...

Optimal Pricing of Production Changes in Cascaded River Systems with Limited Storage

Riddervold, Hans Ole; Skjelbred, Hans Ivar; Kong, Jiehong; Elvetun, Ole Løseth; Korpås, Magnus (Chapter, 2019)

Optimization of hydroelectric power production is often executed for river systems consisting of several powerplants and reservoirs located in the same region. For hydropower stations located along the same river, the ...

Optimizing day-ahead bid curves in hydropower production

Aasgård, Ellen Krohn; Naversen, Christian Øyn; Fodstad, Marte; Skjelbred, Hans Ivar (Journal article; Peer reviewed, 2017)

In deregulated electricity markets, hydropower producers must bid their production into the day-ahead market. For price-taking producers, it is optimal to offer energy according to marginal costs, which for hydropower are ...

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 ...

Progressive hedging for stochastic programs with cross scenario inequality constraints

Aasgård, Ellen Krohn; Skjelbred, Hans Ivar (Journal article; Peer reviewed, 2019)

In this paper, we show how progressive hedging may be used to solve stochastic programming problems that involve cross-scenario inequality constraints. In contrast, standard stochastic programs involve cross-scenario ...

Rolling Horizon Simulator for Evaluation of Bidding Strategies for Reservoir Hydro

Riddervold, Hans Ole; Aasgård, Ellen Krohn; Skjelbred, Hans Ivar; Naversen, Christian Øyn; Korpås, Magnus (Chapter, 2019)

In this paper, a practical approach for benchmarking different bidding strategies towards the day-ahead market has been evaluated. A rolling horizon simulation framework is developed and closely integrated in the daily ...

Strategic Research Agenda of the EERA Joint Programme Hydropower

Aberle, Jochen; Avellan, Francois; Boes, Robert; Cavazzini, Giovanna; Perez Diaz, Juan I.; Doujak, Eduard; Finger, David Christian; Hendrick, Patrick; Heidenreich, Sara; Köhler, Berit; Lundström, Staffan; Riedelbauch, Stefan; Siemonsmeier, Marius; Schürhuber, Robert; Skjelbred, Hans Ivar; Storli, Pål-Tore Selbo (Research report, 2019)

The launch of a new EERA Joint Programme on Hydropower is good news for energy system in Europe and beyond. The clean energy transition is necessary, demanding and accelerating. Hydropower in Europe and worldwide represents ...