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Hans Ivar Skjelbred

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Hans Ivar Skjelbred

Forsker

Hans Ivar Skjelbred
Telefon: 480 74 497
Mobil: 480 74 497
Avdeling: Energisystemer
Kontorsted: Trondheim

Publikasjoner og ansvarsområder

Publikasjoner

Publikasjon

Optimizing day-ahead bid curves in hydropower production

http://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1454798

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 determined by the opportunity cost of using water that could have been stored ...

Forfattere Aasgård Ellen Krohn Naversen Christian Øyn Fodstad Marte Skjelbred Hans Ivar
År 2017
Type Tidsskriftsartikkel
Publikasjon

Operational hydropower scheduling with post-spot distribution of reserve obligations

http://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1482562

As a reliable and flexible electric power source, hydropower can quickly adjust its generation level and provide reserve power to balance the power fluctuations in the system. In this paper, we assume that the day-ahead spot market is cleared and the obligation for each reserve type is already contr...

År 2017
Type Konferanseartikkel/Bokkapittel
Publikasjon

Operational use of marginal cost curves for hydropower plants as decision support in real-time balancing markets

http://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1482566

When participating in the real-time balancing markets, hydropower producers keep making decisions about how much power they are willing to sell or purchase at what prices from the markets. Due to the specific market characteristics, the decisions should be made quickly, placing high demand on the co...

Forfattere Skjelbred Hans Ivar Kong Jiehong Larsen Tellef Juell Kristiansen Fredd
År 2017
Type Konferanseartikkel/Bokkapittel
Publikasjon

Comparing Bidding Methods for Hydropower

http://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1331907

In this paper we compare several methods used by hydropower producers for the determination of bids to the day-ahead market. The methods currently used by the hydropower industry are based on heuristics and expert assessments, but we also include a new method for formal optimization of the bid decis...

År 2016
Type Tidsskriftsartikkel
Publikasjon

Modelling Minimum Pressure Height in Short-term Hydropower Production Planning

http://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1331922

When planning the production for certain hydropower plants, minimum pressure is one of the major critical points. Violation of the minimum pressure causes the power plant to automatically shut down, hence violating the obligations of the plant. Automatic pressure switches and pressure constraints ar...

År 2016
Type Tidsskriftsartikkel
Publikasjon

Increased Information Flow between Hydropower Scheduling Models through Extended Cut Sharing

http://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1331932

We present initial results and description of a method for coupling long term hydro scheduling models to short term hydro schedul- ing models. The method is based on an established approach but extends on the principle to increase the available information of the future estimates provided by the lon...

År 2016
Type Tidsskriftsartikkel
Publikasjon

Combining start-up costs with non-linear head optimization of hydro storage

http://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1038512

In this paper a new method to find optimal strategies for scheduling of pumped hydro storage reservoirs is presented. Allowing start-up costs and non-linear head variations to be handled within a formal optimization algorithm shows increased value for hydro storage operators. Two cases are presented...

Forfattere Skjelbred Hans Ivar
År 2013
Type Konferanseartikkel/Bokkapittel
Publikasjon

Finding seasonal strategies for hydro reservoir scheduling under uncertainty

http://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1133222

In this paper a new approach to generate strategies for hydro reservoir scheduling is presented. The idea is that the marginal value of water in one reservoir can be calculated by dynamic programming under some simple assumptions on the content in other reservoirs. A benefit of this approach is that...

Forfattere Skjelbred Hans Ivar
År 2013
Type Konferanseartikkel/Bokkapittel
Publikasjon

Automatisk kalibrering av SamkjøringsmodellenBasert på samfunnsøkonomi eller magasindisponering

http://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1143422

Rapporten beskriver implementert funksjonalitet for automatisk kalibrering til Samkjøringsmodellen. Det kan kalibreres mot overskudd, magasindisponering eller et blandet kriterium. Det gis eksempler på bruk under ulike forutsetninger. Rapporten inneholder også en brukermanual....

År 2012
Type Rapport
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