journal article·2025-11-01Open access

Operational risk assessment of power system considering transmission limitation on flexible resources and its application to SCUC

Wei Zhang, Linbo Fang, Fulin Zhao, Bowen Xu, Guorong Sun

AIP Advances· Volume 15· Issue 11

Abstract

With the increasing integration of renewable energy, the operational risk of power systems has become a crucial factor. The impact of transmission limitations (TLs) on the availability of flexible resources is of growing significance and should be considered in optimization scheduling. This paper proposes an assessment method for the operational risk assessment of power systems, considering TLs for a more accurate evaluation of the operational risk. The availability of flexible resources can be quantitatively assessed by determining the maximum capacity of available flexible resources. Furthermore, a two-stage stochastic robust Security-Constrained Unit Commitment (SCUC) model is proposed to incorporate operational risk. The operational risk indices are integrated into the objective function, and the optimization models used in the operational risk assessment are incorporated into the stochastic robust optimization model. The solving algorithm based on the column-and-constraint generation is employed to solve the proposed SCUC model. The effectiveness of the proposed method is demonstrated through case studies on a modified IEEE 24-bus system.
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Research context

OpenAlex topics: Electric Power System Optimization · Power System Reliability and Maintenance · Optimal Power Flow Distribution

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

State Grid Anhui Electric Power Co., Ltd. , Hefei 230022,

Funding

Science and Technology Project of State Grid Anhui Electric Power Co., Ltd.

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