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Data-Driven Distributionally Robust Optimization for Day-Ahead Operation Planning of a Smart Transformer-Based Meshed Hybrid AC/DC Microgrid Considering the Optimal Reactive Power Dispatch

Author

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  • Rafael A. Núñez-Rodríguez

    (School Electronic Engineering, Unidades Tecnológicas de Santander, Bucaramanga 680005, Colombia)

  • Clodomiro Unsihuay-Vila

    (Department of Electrical Engineering, Universidade Federal do Paraná, Curitiba 81531-980, Brazil)

  • Johnny Posada

    (Department of Electronics Engineering, Universidad Autónoma de Occidente, Cali 760030, Colombia)

  • Omar Pinzón-Ardila

    (School of Electronic Engineering, Universidad Pontificia Bolivariana, Floridablanca 681007, Colombia)

Abstract

Smart Transformer (ST)-based Meshed Hybrid AC/DC Microgrids (MHMs) present a promising solution to enhance the efficiency of conventional microgrids (MGs) and facilitate higher integration of Distributed Energy Resources (DERs), simultaneously managing active and reactive power dispatch. However, MHMs face challenges in resource management under uncertainty and control of electronic converters linked to the ST and DERs, complicating the pursuit of optimal system performance. This paper introduces a Data-Driven Distributionally Robust Optimization (DDDRO) approach for day-ahead operation planning in ST-based MHMs, focusing on minimizing network losses, voltage deviations, and operational costs by optimizing the reactive power dispatch of DERs. The approach accounts for uncertainties in photovoltaic generator (PVG) output and demand. The Column-and-Constraint Generation (C&CG) algorithm and the Duality-Free Decomposition (DFD) method are employed. The initial mixed-integer non-linear planning problem is also reformulated into a mixed-integer (MI) Second-Order Cone Programming (SOCP) problem using second-order cone relaxation and a positive octagonal constraint method. Simulation results on a connected MHM system validate the model’s efficacy and performance. The study also highlights the advantages of the meshed MG structure and the positive impact of integrating the ST into MHMs, leveraging the multi-stage converter’s flexibility for optimal energy management under uncertain conditions.

Suggested Citation

  • Rafael A. Núñez-Rodríguez & Clodomiro Unsihuay-Vila & Johnny Posada & Omar Pinzón-Ardila, 2024. "Data-Driven Distributionally Robust Optimization for Day-Ahead Operation Planning of a Smart Transformer-Based Meshed Hybrid AC/DC Microgrid Considering the Optimal Reactive Power Dispatch," Energies, MDPI, vol. 17(16), pages 1-25, August.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:16:p:4036-:d:1456466
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    References listed on IDEAS

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