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Recent Advances in Power Quality Analysis and Robust Control of Renewable Energy Sources in Power Grids: 2nd Edition

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "A1: Smart Grids and Microgrids".

Deadline for manuscript submissions: 17 May 2025 | Viewed by 1553

Special Issue Editor


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Guest Editor
Department of Power Engineering, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, University of Split, 21000 Split, Croatia
Interests: control systems in power electronics; control of induction machines; photovoltaic/wind turbine energy generation systems; microgrid control; battery storage systems; fuzzy control
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Special Issue Information

Dear Colleagues,

In modern power grids with a large share of distributed power production, achieving high power quality is a challenging task. The integration of renewable energy sources (RESs) into power grids has introduced various disturbances such as harmonic distortions, voltage sags, frequency variations, voltage unbalance, etc., thereby leading to the degradation of power quality. In particular, the variable nature of RESs may cause rapid changes in voltage; consequently, a protection system can cause the disconnection of different parts of a power system.

To enable the flexible operation of RESs, voltage source converters and associated control systems are necessary. Several RESs with storage devices, loads, and voltage source converters are often connected in so-called microgrids. Microgrids are an emerging concept, closely connected with power quality, novel control methods, the Internet of Things, cyber security, etc. They are designed to function either in grid-connected or standalone mode, depending on their energy potential and grid code requirements.

Since around 30% of the world’s electricity generation comes from RESs (including hydropower), the problems and challenges in integrating RESs into power grids and designing the associated control systems are the focus of much research.

The objective of this Special Issue is to bring together recent, high-quality papers related to the theory and practice of power quality in power grids with a significant share of RESs.

Relevant topics include but are not limited to the following:

  • Power quality monitoring;
  • Control of power quality mitigation devices;
  • Active filtering of voltage and current harmonics;
  • Power quality problem mitigation;
  • Control methods for AC, DC, and hybrid microgrids;
  • Advanced control methods for power converters;
  • Stability of microgrids;
  • Control of storage devices;
  • Advances in the economic aspects of microgrids;
  • Cyber security, data processing, and smart loads in microgrids;
  • Electromagnetic interference in microgrids.

Prof. Dr. Dinko Vukadinović
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Energies is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • renewable energy sources
  • power quality
  • control techniques
  • microgrids
  • energy storage devices
  • electromagnetic interference
  • power factor

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Related Special Issue

Published Papers (2 papers)

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Research

19 pages, 2126 KiB  
Article
Power Quality State Estimation for Distribution Grids Based on Physics-Aware Neural Networks—Harmonic State Estimation
by Patrick Mack, Markus de Koster, Patrick Lehnen, Eberhard Waffenschmidt and Ingo Stadler
Energies 2024, 17(21), 5452; https://doi.org/10.3390/en17215452 - 31 Oct 2024
Viewed by 438
Abstract
In the transition from traditional electrical energy generation with mainly linear sources to increasing inverter-based distributed generation, electrical power systems’ power quality requires new monitoring methods. Integrating a high penetration of distributed generation, which is typically located in medium- or low-voltage grids, shifts [...] Read more.
In the transition from traditional electrical energy generation with mainly linear sources to increasing inverter-based distributed generation, electrical power systems’ power quality requires new monitoring methods. Integrating a high penetration of distributed generation, which is typically located in medium- or low-voltage grids, shifts the monitoring tasks from the transmission to distribution layers. Compared to high-voltage grids, distribution grids feature a higher level of complexity. Monitoring all relevant nodes is operationally infeasible and costly. State estimation methods provide knowledge about unmeasured locations by learning a physical system’s non-linear relationships. This article examines a new flexible, close-to-real-time concept of harmonic state estimation using synchronized measurements processed in a neural network. A physics-aware approach enhances a data-driven model, taking into account the structure of the electrical network. An OpenDSS simulation generates data for model training and validation. Different load profiles for both training and testing were utilized to increase the variance in the data. The results of the presented concept demonstrate high accuracy compared to other methods for harmonic orders 1 to 20. Full article
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18 pages, 5655 KiB  
Article
Decentralized Goal-Function-Based Microgrid Primary Control with Voltage Harmonics Compensation
by Marko Vekić, Milan Rapaić, Ivana Todorović and Stevan Grabić
Energies 2024, 17(19), 4961; https://doi.org/10.3390/en17194961 - 4 Oct 2024
Viewed by 679
Abstract
This paper proposes goal-function-based decentralized control of microgrids. In addition to being an instrument for maintaining the grid voltage and frequency stability, each grid-tie inverter generates a current component with the aim of compensating for voltage distortion in the node where it is [...] Read more.
This paper proposes goal-function-based decentralized control of microgrids. In addition to being an instrument for maintaining the grid voltage and frequency stability, each grid-tie inverter generates a current component with the aim of compensating for voltage distortion in the node where it is connected. The designed goal-function does not need to rely on the assumption that a microgrid is dominantly inductive or resistive to derive its control law, as is mostly the case with the droop-based approach. The priorities of the proposed scheme can be adjusted according to user preferences. In addition, the control algorithm is independent of network topology, can be applied in both islanded and non-islanded microgrids, and secure system scalability. The proposed method is verified by detailed simulations. Full article
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