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Voltage/Frequency/Power Quality Monitoring and Control in Smart Grids

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

Deadline for manuscript submissions: 10 April 2025 | Viewed by 897

Special Issue Editors

School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen 518055, China
Interests: distributed generation; renewable integration; micro-grid energy system; soft-switching methods and modulation techniques for high-frequency power conversion
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Guest Editor
School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen, China
Interests: distributed generation; renewable integration; micro-grid energy system; optimal operation of smart grids
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

With the rapid penetration of grid-connected renewable power sources, electric vehicles, energy storage devices, and smart loads, the power quality of distribution networks and standalone micro-grid systems is emerging as an increasingly critical issue. The power quality of power systems can be classified into transients, short-duration variation, long-duration variation, and waveform distortions. Power quality problems can be presented in the form of harmonics, resonances, unbalances, sags, flickers, voltage/frequency deviations, and so on. These problems deteriorate the reliability and security of the distribution network and standalone microgrid system, especially for critical loads. With the development of information and communication technology, advanced monitoring infrastructures, and integration of a more power-electronics-dominated distributed system, power quality can be better monitored and improved with advanced data processing methods and modern control strategies. The ability to provide a reliable power supply for critical loads in distribution networks and standalone microgrids can also be enhanced. These emerging technologies will impose a critical effect over the dynamic stability analysis, resilience, and power equality enhancement of grid-connected and standalone applications.

This Special Issue will focus on novel power electronic and power system technologies, including control strategies for devices in power-electronics-enabled power systems, control strategies for various kinds of operation resources in power systems, economic evaluation methods for power systems, data processing methods of power system operation data, and so on. Particular topics of interest include, but are not limited to, the following:

  • Frequency/voltage control strategies for EVs, energy storage devices, and smart loads;
  • Data processing methods for the operation data of power systems;
  • Optimal operation and planning models for energy storage devices in power systems;
  • Advanced monitoring and control method for distributed renewable energy;
  • Power quality enhancement in power-electronics-enabled power system;
  • Novel techniques of monitoring and analysis of power quality problem;
  • Control schemes for enhancing power quality;
  • Advanced methods for power quality assessment.

Dr. Xuewei Pan
Dr. Liang Liang
Guest Editors

Manuscript Submission Information

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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

  • power quality
  • smart grids
  • power quality enhancement
  • monitoring and control
  • power quality assessment
  • power electronics enabled power system
  • distributed renewable energy

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Published Papers (1 paper)

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Research

24 pages, 26295 KiB  
Article
Design and Implementation of Hybrid GA-PSO-Based Harmonic Mitigation Technique for Modified Packed U-Cell Inverters
by Hasan Iqbal and Arif Sarwat
Energies 2025, 18(1), 124; https://doi.org/10.3390/en18010124 - 31 Dec 2024
Viewed by 468
Abstract
Multilevel inverters have gained importance in modern power systems during the last few years because of their high power quality with lower THD. Various topologies developed include the packed U-cell inverter and its different modified versions that have emerged as a compact and [...] Read more.
Multilevel inverters have gained importance in modern power systems during the last few years because of their high power quality with lower THD. Various topologies developed include the packed U-cell inverter and its different modified versions that have emerged as a compact and efficient solution to distributed energy systems. Most of the available harmonic mitigation techniques, that is, passive filtering and individual optimization techniques, which include GA and PSO, are susceptible to a variety of shortcomings regarding their inherent complexity and inefficiency; hence, finding an appropriate convergence may be quite hard. This paper proposes a hybrid version of the GA-PSO algorithm that exploits the exploratory strengths of GA and the convergence efficiencies of PSO in determining the optimized switching angles for SHM techniques applied to modified five-level and seven-level PUC inverters. By utilizing the multi-objective optimization method, the approach minimizes THD while keeping voltage and efficiency constraints. Simulated in MATLAB/Simulink, the results were experimentally verified using hardware-in-the-loop testing on OP5700. A large THD reduction in both MPUC7 (11.68%) and MPUC5 (17.61%) was obtained. The proposed hybrid algorithm outperformed the standalone approaches of GA and PSO with respect to robustness and with precise harmonic suppression. Other appealing features are reduced computational complexity and improved waveform quality; hence, the method is highly suitable for both grid-tied and standalone renewable energy applications. This work lays a basis for efficient inverter designs that can adapt well under dynamic load conditions. Full article
(This article belongs to the Special Issue Voltage/Frequency/Power Quality Monitoring and Control in Smart Grids)
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