• Analyse av startbetingelser og vannverdier for en stokastisk korttidsmodell 

      Hansen, Håvard (Master thesis, 2015)
      Denne oppgaven har forsøkt, ved hjelp av SINTEFs SHARM-modell, å finne betingelser hvor en stokastisk fremgangsmåte for produksjonsplanlegging av vannkraft vil gi målbare fordeler fremfor en deterministisk fremgangsmåte. En ...
    • 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 ...
    • 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 ...
    • 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 ...
    • 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 ...