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An Efficient Robust Solution to the Two-Stage Stochastic Unit Commitment Problem
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DOI：10.1109/TPWRS.2017.2683263.png)
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摘要
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This paper provides a reformulation of the scenariobased two-stage unit commitment problem under uncertainty that allows finding unit-commitment plans that perform reasonably well both in expectation and for the worst case. The proposed reformulation is based on partitioning the sample space of the uncertain factors by clustering the scenarios that approximate their probability distributions. The degree of conservatism of the resulting unit-commitment plan (that is, how close it is to the one provided by a purely robust or stochastic unit-commitment formulation) is controlled by the number of partitions into which the said sample space is split. To efficiently solve the proposed reformulation of the unit-commitment problem under uncertainty, we develop two alternative parallelization and decomposition schemes that rely on a column-and-constraint generation procedure. Finally, we analyze the quality of the solutions provided by this reformulation for a case study based on the IEEE 14-node power system and test the effectiveness of the proposed parallelization and decomposition solution approaches on the larger IEEE 3-Area RTS-96 power system.
Keyword:
Stochastic and robust unit commitment
clustering
column-and-constraint generation
parallel computing
scenario reduction
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期刊
IF:
7.2
论文数:
1.1W
被引数:
5.0W
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