Solving the Unit Commitment Problem by a Unit Decommitment Method

C. L. Tseng, C. A. Li and S. S. Oren
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C. L. Tseng: University of Maryland
C. A. Li: Pacific Gas and Electric Company
S. S. Oren: University of California at Berkeley

Journal of Optimization Theory and Applications, 2000, vol. 105, issue 3, No 13, 707-730

Abstract: Abstract In this paper, we present a unified decommitment method to solve the unit commitment problem. This method starts with a solution having all available units online at all hours in the planning horizon and determines an optimal strategy for decommitting units one at a time. We show that the proposed method may be viewed as an approximate implementation of the Lagrangian relaxation approach and that the number of iterations is bounded by the number of units. Numerical tests suggest that the proposed method is a reliable, efficient, and robust approach for solving the unit commitment problem.

Keywords: power system scheduling; unit commitment; unit decommitment; mixed-integer programming; Lagrangian relaxation; heuristic procedures (search for similar items in EconPapers)
Date: 2000
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Citations: View citations in EconPapers (2)

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DOI: 10.1023/A:1004653526131

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