Power Quality and Disturbances in Modern Distribution Networks

Dear Colleagues,

Several key strategies are currently being adopted to meet the drive towards energy decarbonisation. These strategies include the integration of renewable energy sources and energy storage into the utility grid, power-to-X technologies, the electrification of transport and the use of advanced, more efficient power electronic converters for sustainable energy use. As the adoption of these technologies is growing exponentially, the energy generation paradigm is shifting from conventional synchronous generators to inverter-based power sources, while the nature of the loads is changing from linear to non-linear. This shift is affecting the power quality of the supply, thereby affecting the reliable operation of electrical networks and consumer equipment. The most common power quality disturbances manifest as harmonics/interharmonics, dips, swells, transients and asymmetrical variations. These events are leading to dramatic changes in the operation of modern distribution networks and have prompted the need for effective power quality management through continuous monitoring, analysis and mitigation. This approach is critical to ensure a reliable and stable power supply.

This Special Issue of Energies seeks to outline the power quality issues in modern distribution systems, emphasising their significance in the present and future generation scenarios. We invite contributions that express new concepts and research findings on possible mitigation measures for present and envisaged scenarios. The following is a non-exhaustive list of topics of interest for this Special Issue:

• Monitoring, analysis and mitigation of power disturbances;
• Identification of harmonic sources;
• Techniques for the provision of power system virtual/synthetic inertia;
• Advanced control of power converters;
• Grid-following/forming inverters for power quality enhancement;
• Active voltage compensation systems;
• Active filtering of harmonics and harmonic compensation techniques;
• Enhancing power quality through energy storage systems;
• Power quality in microgrids.

Dr. John Licari
Dr. Alexander Micallef
Guest Editors

Manuscript Submission Information

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• power quality disturbance
• harmonics
• power system virtual/synthetic inertia
• power converters control
• microgrid power quality