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A holistic model-less approach for the optimal real-time control of power electronics-dominated AC microgrids

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  • Olives-Camps, J. Carlos
  • Rodríguez del Nozal, Álvaro
  • Mauricio, Juan Manuel
  • Maza-Ortega, José María

Abstract

This paper addresses the problem of optimally operating a set of grid-forming devices in an AC microgrid when a detailed network model is not available. The main aim of the approach is to maximize the power sharing of the controllable grid-forming devices and to maintain the frequency and the nodal voltages of the microgrid as close as possible to their corresponding references. The proposed control architecture is conformed by a local control layer in each grid-forming device that intends to emulate the performance of a synchronous machine and a centralized secondary controller composed of two complementary tools that coordinates the setpoints of the grid-forming devices: an online feedback optimization algorithm and an automatic generation control. The proposed method has been validated through simulations and hardware-in-the-loop tests, evidencing its good performance and robustness under different conditions.

Suggested Citation

  • Olives-Camps, J. Carlos & Rodríguez del Nozal, Álvaro & Mauricio, Juan Manuel & Maza-Ortega, José María, 2023. "A holistic model-less approach for the optimal real-time control of power electronics-dominated AC microgrids," Applied Energy, Elsevier, vol. 335(C).
    • Handle: RePEc:eee:appene:v:335:y:2023:i:c:s0306261923001253
    DOI: 10.1016/j.apenergy.2023.120761
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    References listed on IDEAS

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    1. Abdi, Hamdi & Beigvand, Soheil Derafshi & Scala, Massimo La, 2017. "A review of optimal power flow studies applied to smart grids and microgrids," Renewable and Sustainable Energy Reviews, Elsevier, vol. 71(C), pages 742-766.
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