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Analysis of System Balancing and Wind Power Curtailment Challenges in the Ethiopian Power System under Different Scenarios

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  • Kena Likassa Nefabas

    (School of Electrical and Computer Engineering, AAU Addis Ababa University, Addis Ababa 3614, Ethiopia)

  • Mengesha Mamo

    (School of Electrical and Computer Engineering, AAU Addis Ababa University, Addis Ababa 3614, Ethiopia)

  • Lennart Söder

    (Department of Electric Power & Energy Systems, KTH Royal Institute of Technology, 10044 Stockholm, Sweden)

Abstract

In this paper, an hourly dispatch model was developed to analyze the system balancing and wind power curtailment challenges in the future of the Ethiopian electric power grid system. The developed model was validated using historical data and was used for the analysis of the grid system in 2030 with different scenarios. The model was used to examine the impacts of transmission capacity, regulation reserve requirement, and daily minimum generation of hydropower for irrigation with three cases of wind annual energy share of 14.5%, 17.8%, and 25.2%. Thus, the curtailment was found to be below 0.2%, 1.1%, and 9.8% for each case, respectively. The cost of wind energy increases in proportion to the percentage of curtailment and the increase in transmission line capacity. Reducing the minimum hydropower generation results in smaller wind power curtailment and better generation–consumption balancing.

Suggested Citation

  • Kena Likassa Nefabas & Mengesha Mamo & Lennart Söder, 2023. "Analysis of System Balancing and Wind Power Curtailment Challenges in the Ethiopian Power System under Different Scenarios," Sustainability, MDPI, vol. 15(14), pages 1-20, July.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:14:p:11400-:d:1200146
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    References listed on IDEAS

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    1. Kena Likassa Nefabas & Lennart Söder & Mengesha Mamo & Jon Olauson, 2021. "Modeling of Ethiopian Wind Power Production Using ERA5 Reanalysis Data," Energies, MDPI, vol. 14(9), pages 1-17, April.
    2. Farahmand, H. & Doorman, G.L., 2012. "Balancing market integration in the Northern European continent," Applied Energy, Elsevier, vol. 96(C), pages 316-326.
    3. Mc Garrigle, E.V. & Deane, J.P. & Leahy, P.G., 2013. "How much wind energy will be curtailed on the 2020 Irish power system?," Renewable Energy, Elsevier, vol. 55(C), pages 544-553.
    4. Askeland, Kristine & Bozhkova, Kristina N. & Sorknæs, Peter, 2019. "Balancing Europe: Can district heating affect the flexibility potential of Norwegian hydropower resources?," Renewable Energy, Elsevier, vol. 141(C), pages 646-656.
    5. Villamor, Lila Vázquez & Avagyan, Vitali & Chalmers, Hannah, 2020. "Opportunities for reducing curtailment of wind energy in the future electricity systems: Insights from modelling analysis of Great Britain," Energy, Elsevier, vol. 195(C).
    6. Nycander, Elis & Söder, Lennart & Olauson, Jon & Eriksson, Robert, 2020. "Curtailment analysis for the Nordic power system considering transmission capacity, inertia limits and generation flexibility," Renewable Energy, Elsevier, vol. 152(C), pages 942-960.
    Full references (including those not matched with items on IDEAS)

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