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Techno-economic and environmental comparative analysis for DC microgrids in households: Portuguese and French household case study

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  • Eskander, Monica M.
  • Silva, Carlos A.

Abstract

This study revisits the use of the direct current (DC) distribution system concept in households to increase energy savings and potentially reduce costs and associated environmental impacts by comparing the impact of alternating current (AC) and DC distribution networks with today's trending appliances and highly efficient appliances. The study is based on environmental-economic modelling for various microgrid configurations with different DC load ratios and renewable energy capacities. An adaptive load profile based on initial assumptions is developed, the optimal distributed energy resource schedule is identified using DERCAM software, and the proper converters and system cabling are chosen. The converter's operation efficiency curve and dynamic consumption behaviours are examined for real-time sequential analysis for power flow loss. Two datasets from France and Portugal are used to explore the impact of different climate zones, socio-economic conditions and electricity prices on the configuration viability. The results show that DC solutions are efficient for large consumers in both countries, and current AC configurations are still cost-effective for medium consumers.

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  • Eskander, Monica M. & Silva, Carlos A., 2023. "Techno-economic and environmental comparative analysis for DC microgrids in households: Portuguese and French household case study," Applied Energy, Elsevier, vol. 349(C).
    • Handle: RePEc:eee:appene:v:349:y:2023:i:c:s0306261923008590
    DOI: 10.1016/j.apenergy.2023.121495
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    References listed on IDEAS

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    1. Hasan Erteza Gelani & Faizan Dastgeer & Mashood Nasir & Sidra Khan & Josep M. Guerrero, 2021. "AC vs. DC Distribution Efficiency: Are We on the Right Path?," Energies, MDPI, vol. 14(13), pages 1-26, July.
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    4. Gerber, Daniel L. & Vossos, Vagelis & Feng, Wei & Marnay, Chris & Nordman, Bruce & Brown, Richard, 2018. "A simulation-based efficiency comparison of AC and DC power distribution networks in commercial buildings," Applied Energy, Elsevier, vol. 210(C), pages 1167-1187.
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    6. Saeed Habibi & Ramin Rahimi & Mehdi Ferdowsi & Pourya Shamsi, 2021. "DC Bus Voltage Selection for a Grid-Connected Low-Voltage DC Residential Nanogrid Using Real Data with Modified Load Profiles," Energies, MDPI, vol. 14(21), pages 1-19, October.
    7. Vagelis Vossos & Daniel L. Gerber & Melanie Gaillet-Tournier & Bruce Nordman & Richard Brown & Willy Bernal Heredia & Omkar Ghatpande & Avijit Saha & Gabe Arnold & Stephen M. Frank, 2022. "Adoption Pathways for DC Power Distribution in Buildings," Energies, MDPI, vol. 15(3), pages 1-23, January.
    8. Glasgo, Brock & Azevedo, Inês Lima & Hendrickson, Chris, 2016. "How much electricity can we save by using direct current circuits in homes? Understanding the potential for electricity savings and assessing feasibility of a transition towards DC powered buildings," Applied Energy, Elsevier, vol. 180(C), pages 66-75.
    9. Vossos, Vagelis & Gerber, Daniel & Bennani, Youness & Brown, Richard & Marnay, Chris, 2018. "Techno-economic analysis of DC power distribution in commercial buildings," Applied Energy, Elsevier, vol. 230(C), pages 663-678.
    10. Glasgo, Brock & Hendrickson, Chris & Azevedo, Inês Lima, 2017. "Assessing the value of information in residential building simulation: Comparing simulated and actual building loads at the circuit level," Applied Energy, Elsevier, vol. 203(C), pages 348-363.
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