Power Quality in AC and DC Distribution Grids: Monitoring, Management and Improvement
A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "F: Electrical Engineering".
Deadline for manuscript submissions: closed (20 December 2023) | Viewed by 954
Special Issue Editors
Interests: power quality; distribution systems;
Interests: digital signal processing; power quality; harmonics; nonlinear models; measurement systems; electrical measurements; instrument transformers
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Special Issue Information
Dear Colleagues,
As Guest Editors, we are welcoming submissions to the Special Issue entitled “Power Quality in AC and DC Distribution Grids: Monitoring, Management and Improvement ".
Distribution systems (DSs) are expected to undergo deep changes in the future years. Most of them are driven by the efforts taken to reduce global warming through decarbonization of energy production and transition towards e-mobility. In this scenario, the presence of plug-in electric vehicle charging stations is likely to increase massively, such as the penetration of renewable energy sources (RES) connected to the DSs, generally combined with energy storage systems (ESS) that are necessary to make up for the non-programmable nature of some RES. As a result, the number of power electronics-based devices is expected to grow even faster, also boosted by the impressive ad advancement of semiconductor technology. From a different point of view, an attractive solution to effectively integrate RES and ESS into existing AC DSs is represented by DC microgrids.
The impact of these changes on the operation of the DSs is huge. Among them, the transmission grid is weakened, system inertia is significantly smaller, thus resulting in faster dynamics; the harmonic content of current and voltage waveforms in DSs could increase significantly because of the large number of both load and generators based on power electronics. In this scenario, power quality (PQ) has key importance: customers are becoming more demanding in terms of continuity and quality of the power supply, while harmonic pollution should be mitigated for increasing efficiency, reducing dielectric and thermal stresses, preventing the triggering of resonances. High PQ levels and advanced grid monitoring are among the prerogatives of the now ubiquitous Smart Grid paradigm.
PQ monitoring in conventional AC DSs is ruled by standard EN50160. On the other hand, the concept of PQ in DC systems is yet under investigation. In either the cases, extensive monitoring thanks to proper distributed measurements systems can play a key role for a proper handling these phenomena, which means evaluating the PQ level while studying possible improvements.
In conclusion, the aim of this special issue is attracting researchers active in the field of PQ evaluation and improvement, applied to both AC and DC DSs, in order to present their last advancements.
Dr. Michele Zanoni
Dr. Sergio Toscani
Guest Editors
Manuscript Submission Information
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Keywords
- power quality
- harmonic monitoring
- location of harmonic sources
- instrument transformers
- voltage and current measurements
- AC and DC distribution systems
- monitoring systems
