Collaborative switch placement and operational measures to enhance distribution system flexibility considering uncertain operation costs

Kaiyuan Pang, Aris L. Dimeas, Nikos D. Hatziargyriou, Chongyu Wang and Fushuan Wen

Energy, 2025, vol. 320, issue C

Abstract: The growing integration of intermittent renewable energy-based generation into a distribution system calls for enhanced operational flexibility. This paper investigates distribution system flexibility offered by collaborative switch placement and operational measures including network reconfiguration, demand-side response, distributed energy resources, as well as generation and load curtailment. A two-layer optimization model is formulated to capture these combined effects, with a focus on addressing the highly uncertain operation cost over an extended planning horizon. By employing the strong duality theorem, the two-layer optimization model is transformed into a single-level formulation, which can be effectively solved using commercially available optimization solvers. Simulation results on a Greek distribution system demonstrate that the proposed collaborative switch placement and system operating strategy can significantly enhance system flexibility under uncertain operation conditions. Notably, a maximum reduction of 259.34 k€ in annual operational costs is achieved with a switch installation plan costing only 6.88 k€. Furthermore, the proposed strategy reveals considerable flexibility offered by network reconfiguration, reducing the aggregated costs of demand-side response as well as generation and load curtailment, from 308.53 k€ to 49.18 k€.

Keywords: Distribution system flexibility; Switch placement; Network reconfiguration; Demand-side response; Robust optimization (search for similar items in EconPapers)
Date: 2025
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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:320:y:2025:i:c:s0360544225006243

DOI: 10.1016/j.energy.2025.134982

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