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A Dynamic Control Approach for AC Micro-Grids Including Non-Inverter and Inverter Based Energy Resources
Zahra Mobini-Serajy, Mehdi Radmehr, Alireza Ghorbani,
Volume 20, Issue 0 (12-2024)
Abstract
Micro-Grids harness the benefits of non-inverter and inverter based Distributed Energy Resources (DER) in grid-connected and island environments. Adoption them with the various type of electric loads in modern MGs has led to stability and power quality issues. In this paper, two-level control approach is proposed to overcome these problems. A state-space dynamic model is performed for Micro-Grids, for this goal, the state-space equations for generation, network and load components are separately developed in a local DQ reference frame, and after linearization around the set point, then combining them into a common DQ reference frame. In the first level, the control of inverter-based DERs and some types of loads with fast response are activated, and in the second level, the control of synchronous diesel generator resources with slower response are used. In order to validate and effectiveness evaluation of proposed control approach, numerical studies have been stablished on a standard test MG under normal and a symmetrical three-phase fault conditions. Finally, the simulations results are summarized.

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Creative Commons License
© 2022 by the authors. Licensee IUST, Tehran, Iran. This is an open access journal distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) license.