Modeling of Uncertainty for the Real-Time Management of Power Systems

Nicole Gröwe-Kuska, Matthias P. Nowak and Isabel Wegner
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Nicole Gröwe-Kuska: Humboldt-Universität zu Berlin, Institut für Mathematik
Matthias P. Nowak: SINTEF
Isabel Wegner: Humboldt-Universität zu Berlin, Institut für Mathematik

A chapter in Online Optimization of Large Scale Systems, 2001, pp 623-647 from Springer

Abstract: Abstract A major issue in the application of multistage stochastic programming to model the cost-optimal generation and trading of electric power is the approximation of the underlying stochastic data processes by tree-structured schemes. We present a methodology for the generation of scenario trees for the stochastic load process from historical load profiles. The statistical modeling of the load process exploits the decomposition of the load process into a daily mean load process and a mean-corrected load series. The probability distribution of the load process over the optimization horizon is derived by using a time series model for the daily mean load process and regression models for the mean-corrected load series. We utilize the explicit representation of the distribution to compute approximate load scenarios and their probabilities. In a final step we reduce the number of load scenarios by a scenario deletion procedure. We report on the application of our approach to the cost-optimal generation of electric power in the hydro-thermal generation system of a German power utility.

Keywords: Stochastic Programming; Time Series Model; Lagrangian Relaxation; Load Process; Scenario Tree (search for similar items in EconPapers)
Date: 2001
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DOI: 10.1007/978-3-662-04331-8_31

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