| Issue |
EPJ Web Conf.
Volume 372, 2026
Advanced Power Systems (APS 2026)
|
|
|---|---|---|
| Article Number | 02011 | |
| Number of page(s) | 7 | |
| Section | Sustainable, Renewable and Future Energy Systems | |
| DOI | https://doi.org/10.1051/epjconf/202637202011 | |
| Published online | 11 June 2026 | |
https://doi.org/10.1051/epjconf/202637202011
Optimization of an industrial microgrid integrating photovoltaic generation, Diesel backup and reactive power compensation
1 Technical University of Moldova, Electrical Engineering Department, 78 31 august 1989 str., Chisinau, Moldova
2 Efes Vitanta Moldova Brewery, Production Department, 167 Uzinelor str., Chisinau, Moldova
* Corresponding author: This email address is being protected from spambots. You need JavaScript enabled to view it.
Published online: 11 June 2026
Abstract
The increasing integration of renewable energy sources into industrial power systems requires optimized operating strategies to ensure power quality, reliability and energy efficiency. This paper presents the experimental and simulation-based analysis of an industrial microgrid integrating a 120 kW photovoltaic system, an 80 kW diesel generator, a 250 kVA transformer station and a 120 kVAr automatic reactive power compensation unit. Five operating regimes were investigated: grid supply without compensation, grid supply with compensation, photovoltaic-assisted operation, combined photovoltaic and reactive compensation regime, and islanded operation with diesel backup. Experimental measurements performed in real operating conditions show that photovoltaic generation reduced grid power demand by up to 70-75 kW under favorable irradiation conditions. Reactive power compensation improved the power factor from approximately 0.82 to values close to 0.98, significantly reducing transformer loading and reactive power exchange with the utility grid. A detailed dynamic model of the microgrid was developed in MATLAB/Simulink-Simscape Electrical to validate the experimental results under on-grid and off-grid conditions. The optimized regime, combining photovoltaic generation and reactive compensation, demonstrated improved resilience, enhanced voltage stability and reduced diesel generator loading in islanded mode. The proposed methodology provides a practical framework for optimization of industrial microgrids aiming at decarbonization and operational efficiency.
© The Authors, published by EDP Sciences, 2026
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.