Abstract
In the traditional organisation of the power market, the generation Unit Commitment and Dispatch problem was solved as a cost minimisation problem. After deregulation of the electricity sector, the problem must be solved as a profit maximising problem. It is necessary to find feasible market prices. This is difficult, because simple marginal cost based prices not always cover startup and operation-independent costs, with the result that the generator would choose not to run with such prices. In this paper a market structure is proposed with a central market operator computing the market equilibrium for both energy and reserves, based on generator offers and consumer bids. It is shown that it is possible to find feasible market prices. Using a simple test system, it is shown that demand elasticity can have a profound impact on prices and generator revenues and profits during peaking hours.
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References
Baldick, R. (1995). “The Generalized Unit Commitment Problem.” IEEE Transactions on Power Systems 10(1).
Bard, J.F. (1998). “Short-Term Scheduling of Thermal-Electric Generators Using Lagrangian Relaxation.” Operations Research 36(5).
Bertsekas, D.P., D.S. Lauer, N.R. Sandell Jr., and T.A. Posbergh. (1983). “Optimal Short-Term Scheduling of Large-Scale Power Systems.” IEEE Transactions on Automatic Control AC-28, 1–11.
Green, R. (1999). “Draining the Pool: The Reform of Electricity Trading in England and Wales.” Energy Policy 27(9), 515–525.
Green, R. (2000). “Competition in Generation: The Economic Foundations.” Proceedings of the IEEE 88(2).
Huse, E.S., I. Wangensteen, and H.H. Faanes. (1999). “Thermal Power Generation Scheduling by Simulated Competition.” IEEE Transactions on Power Systems 14(2).
Joskow, P.L. and R. Schmalensee. (1983). Markets for Power: An Analysis of Electric Utility Deregulation. Cambridge, MA: MIT Press.
Joskow, P.L. (1996). “Introducing Competition into Regulated Network Industries: From Hierarchies to Markets in Electricity.” Industrial and Corporate Change 2, 241–282.
Madrigal, M. and V.H. Quintana. (2000). “Using Optimization Models and Techniques to Implement Electricity Auctions.” In 2000 IEEE Power Engineering Society Winter Meeting, Singapore.
Merlin, A. and P. Sandrin. (1983). “A New Method for Unit Commitment at Electricité de France.” IEEE Transactions on PAS PA-102(4).
Muckstadt, J.A. and S.A. Koenig. (1977). “An Application of Lagrangian Relaxation to Scheduling in Power-Generation Systems.” Operations Research 25(3), 387–403.
Williams, H.P. (1976). “The Economic Interpretation of Duality for Practical Mixed Integer Problems.” In Survey of Mathematical Programming: Proceedings of the 9th International Mathematical Programming Symposium, Budapest.
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Doorman, G., Nygreen, B. Market Price Calculations in Restructured Electricity Markets. Annals of Operations Research 124, 49–67 (2003). https://doi.org/10.1023/B:ANOR.0000004762.31449.33
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DOI: https://doi.org/10.1023/B:ANOR.0000004762.31449.33