High-dimension tie-line security regions for renewable accommodations

Wei Lin, Hua Jiang, Haojun Jian, Jingwei Xue, Jianghua Wu, Chongyu Wang and Zhenjia Lin

Energy, 2023, vol. 270, issue C

Abstract: Tie-line power exchanges among regional power systems facilitate renewable accommodations. Power exchanges can be calculated based on a tie-line security region that provides the feasible region of coupling parameters. However, a tie-line security region is a high-dimension polytope due to multiple time periods and border buses in power system operations, generally leading to a heavy computational burden. A fast calculation for high-dimension tie-line security regions is studied in this paper. The high-dimension polytope across all the time periods is decomposed as a Cartesian production of lower-dimension polytopes at each time period by leveraging dispatch levels of generations. For each lower-dimension polytope, the computational burden brought by multiple border buses is alleviated by aggregating tie-line power. Minimum renewable curtailments are preserved in the tie-line security region by adding an additional dimension, providing the information for renewable accommodations based on the tie-line security region. For coupling parameters within our tie-line security region, a feasible decision of the regional power system always exists. Finally, a decentralized and non-iterative framework is demonstrated to utilize our tie-line security region for renewable accommodations in an interconnected power system. The effectiveness of our methods is corroborated in the IEEE 9-bus system, a 661-bus utility system, and a five-region system.

Keywords: Renewable accommodation; Tie-line security region; High dimension; Fast calculation (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:270:y:2023:i:c:s0360544223002815

DOI: 10.1016/j.energy.2023.126887

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