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Distributionally Robust Chance-Constrained Unit Commitment for Power Systems Considering Wind Power Curtailment and Load Shedding Levels

Lookup NU author(s): Professor Vladimir TerzijaORCiD

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Abstract

With increasing wind power penetration, the inherent uncertainty of wind power poses significant challenges to dispatch decisions in power systems. To address this issue, this paper proposes a two-stage distributionally robust chance-constrained (TDRC) model for the unit commitment problem with wind power uncertainty. In this model, an ambiguity confidence set is developed to characterise wind power uncertainty with unknown probability distributions, and wind power curtailment and load shedding levels are modelled as chance constraints to balance wind power uncertainty and system security of dispatch decisions. A hybrid parallel solution (HPS) is proposed for efficient computation by integrating Benders decomposition (BD) and column-and-constraint generation (C&CG) methods. Case studies on the IEEE 24- and 118-bus systems demonstrate the rationality of the proposed approach, while experiments on a practical 126-bus system using the cyber-physical power system (CPPS) dispatch platform further validate the effectiveness and practical applicability of the proposed TDRC model.

Publication metadata

Author(s): Du M, Zhang X, Zhang J, Wang Z, Terzija V

Publication type: Article

Publication status: Published

Journal: IEEE Transactions on Automation Science and Engineering

Year: 2026

Volume: 23

Pages: 2621-2635

Online publication date: 13/01/2026

Acceptance date: 27/12/2025

ISSN (print): 1545-5955

ISSN (electronic): 1558-3783

Publisher: IEEE

URL: https://doi.org/10.1109/TASE.2026.3653716

DOI: 10.1109/TASE.2026.3653716

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