N-1-1 contingency-constrained unit commitment with renewable integration and corrective actions

Daniel A. Zuniga Vazquez, Jose L. Ruiz Duarte, Neng Fan () and Feng Qiu
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Daniel A. Zuniga Vazquez: University of Arizona
Jose L. Ruiz Duarte: San Jose State University
Neng Fan: University of Arizona
Feng Qiu: Argonne National Laboratory

Annals of Operations Research, 2022, vol. 316, issue 1, No 18, 493-511

Abstract: Abstract Meeting the customer’s power demands is crucial for energy companies, even when unexpected and consecutive failures are present. This task has considerably increased its complexity due to the high integration of renewable energies and their intermittent behaviors. Therefore, it is important to achieve reliable power supply based on a criterion closer to real-life system operations and capable of addressing consecutive failures. The N-1-1 contingency involves the loss of a single transmission line or generation unit, followed by systems adjustments. Afterward, the power system experiences a subsequent loss of an additional generation unit or transmission line. This paper presents a power system unit commitment problem considering the N-1-1 reliability criterion with operations compliance check on economic dispatch and power flows under contingency states and renewable energy integration. Corrective actions are also included to determine the time that the failed components are restored. To address the complexity caused by renewable energy integration, the reliable unit commitment is achieved under the worst-case renewable output. The formulation results in an extremely large-scale adaptive robust mixed-integer linear programming model. For an efficient solution, a variation of the nested column-and-constraint generation algorithm is designed. Besides using the susceptance and phase angles to model the power flow, the linear sensitivity factors are also applied for improving the computational performance. The proposed models and algorithms are evaluated on modified IEEE 6-bus, 14-bus, and 118-bus test systems to confirm their effectiveness.

Keywords: Adaptive robust optimization; Consecutive failures; Nested column-and-constraint generation; Renewable energy sources; Unit commitment (search for similar items in EconPapers)
Date: 2022
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DOI: 10.1007/s10479-021-04204-y

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