What is it about?
This article presents a refined modelling approach for harmonic load-flow analysis in low-voltage (LV) distribution networks with high photovoltaic (PV) penetration. The authors propose and validate multi-conductor line models that more accurately represent the unbalanced and frequency-dependent behavior of real-world LV grids. The models are tested using a modified IEEE 37-node feeder with realistic harmonic sources, showing better performance compared to traditional single-phase approximations.
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Why is it important?
With the increasing integration of PV systems and nonlinear loads in LV networks, harmonics are becoming a major concern for power quality. Conventional load-flow tools often oversimplify the modelling of conductors and harmonic interactions. This research addresses that gap by providing a more accurate and scalable modelling technique, improving both the analysis and planning of modern distribution grids. It is particularly relevant for utilities, engineers, and researchers dealing with smart grid challenges.
Perspectives
This work reflects my interest in the technical foundations of power quality and how they intersect with renewable integration. Accurate modelling is not just a theoretical exercise - it’s a requirement for ensuring that new energy technologies function harmoniously within existing networks. I see this contribution as a step toward smarter, more robust tools for grid analysis in the context of high PV penetration.
Dr Fernando M Camilo
Universidade de Lisboa
Read the Original
This page is a summary of: Multi-conductor Line Models for Harmonic Load-flow Calculations in LV Networks with High Penetration of PV Generation, Journal of Modern Power Systems and Clean Energy, January 2022, Journal of Modern Power Systems and Clean Energy,
DOI: 10.35833/mpce.2020.000740.
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