Blar i Institutt for industriell økonomi og teknologiledelse på forfatter "Aasgård, Ellen Krohn"
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Backtesting a Stochastic Coordinated Bidding Model for Sequential Electricity Markets
Bringedal, Amanda Sæbø; Søvikhagen, Anne-Marthe Liaklev (Master thesis, 2018)Mainly, the balance in the power system is secured in the day-ahead market. Other markets with closing time closer to delivery have emerged to further secure the balance between supply and demand. The question is whether ... -
Backtesting coordinated hydropower bidding using neural network forecasting
Bringedal, Amanda Sæbø; Søvikhagen, Anne-Marthe; Aasgård, Ellen Krohn; Fleten, Stein-Erik (Peer reviewed; Journal article, 2021)A stochastic programming model for a price-taking, profit-maximizing hydropower producer participating in the Nordic day-ahead and balancing market is developed and evaluated by backtesting over 200 historical days. We ... -
Coordinated Hydropower Bidding in the Day-Ahead and Balancing Market
Aasgård, Ellen Krohn (Chapter, 2018)Power producers with flexible production systems such as hydropower may sell their output in the day–ahead and balancing power markets. We present how the coordination of trades across multiple markets may be described as ... -
Coordinated Hydropower Bidding in the Day-Ahead and Balancing Market
Aasgård, Ellen Krohn (Chapter, 2019)Power producers with flexible production systems such as hydropower may sell their output in the day–ahead and balancing power markets. We present how the coordination of trades across multiple markets may be described as ... -
Day-ahead electricity market bidding for a cascaded reservoir system: A stochastic programming approach
Aasgård, Ellen Krohn; Andersen, Gørild Slettjord (Master thesis, 2013)In this thesis a stochastic model for bid optimization and short-term productionscheduling has been implemented and tested trough a simulationprocedure run over a longer period of time for a complex real-life river system.The ... -
Hydropower Bidding in a Multi-Market Setting
Aasgård, Ellen Krohn; Fleten, Stein-Erik; Kaut, Michal; Midthun, Kjetil; Perez-Valdes, Gerardo A. (Journal article, 2018)We present a literature survey and research gap analysis of mathematical and statistical methods used in the context of optimizing bids in electricity markets. Particularly, we are interested in methods for hydropower ... -
Opportunity-cost-pricing of reserves for a simple hydropower system
Aasgård, Ellen Krohn; Roti, Pål Henrik (Journal article; Peer reviewed, 2016)This work investigates the cost of delivering different types of balancing reserves from a simple hydropower reservoir system. In addition to delivering energy, the fast ramping characteristics of hydropower units makes ... -
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 ... -
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 ... -
Short-term hydropower optimization in the day-ahead market using a nonlinear stochastic programming model
Jafari Aminabadi, Aminabadi; Séguin, S.; Fofana, I.; Fleten, Stein-Erik; Aasgård, Ellen Krohn (Peer reviewed; Journal article, 2023)Hydropower producers participate in electricity markets by providing bids in market auctions, typically day-ahead. Making good bids that obey all market rules and consider uncertain prices for large, interconnected hydropower ... -
Stochastic programming for short-term hydropower scheduling and bidding
Aasgård, Ellen Krohn (Doctoral theses at NTNU;2019:9, Doctoral thesis, 2019)Hovedfokuset for denne avhandlingen er budgivning- og produksjonsplanleggingsproblemet for vannkraftprodusenter som deltar i flere markeder. Det europeiske kraftsystemet er i endring, både når det gjelder markedsdesign, ... -
The value of coordinated hydropower bidding in the Nordic day‑ahead and balancing market
Aasgård, Ellen Krohn (Peer reviewed; Journal article, 2020)Modern power markets often consist of a series of sequential markets where power is traded. Market agents must coordinate their trading strategy across all markets. In this paper, we formulate the mult-market bidding problem ...