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Optimal Operation of a Hybrid Power System as an Island Microgrid in South-Korea

Author

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  • Yeon-Ju Choi

    (Gyeongbuk Institute of IT Convergence Industry Technology, 1 Gongdan 1-ro 12 gil, Jillyang-eup, Gyengsan-si 38463, Korea)

  • Byeong-Chan Oh

    (Department of Electronic and Electrical Engineering, Keimyung University, 1095 Dalgubeol-daero, Daegu 42601, Korea)

  • Moses Amoasi Acquah

    (Department of Electrical Energy Engineering, Keimyung University, 1095 Dalgubeol-daero, Daegu 42601, Korea)

  • Dong-Min Kim

    (Department of Electrical Engineering, Dongshin University, 67, Dongsindae-gil, Naju-si 58245, Korea)

  • Sung-Yul Kim

    (Department of Electrical Energy Engineering, Keimyung University, 1095 Dalgubeol-daero, Daegu 42601, Korea)

Abstract

The microgrid is a power distribution system that supplies power from distributed generation to end-users. Demonstration projects and R&D regarding microgrids are currently in development in several advanced countries. In South Korea, renewable energy-based microgrid demonstration projects are carried out mainly as island or university campus grids. These R&D efforts aim to popularize microgrid systems in South Korea while considering the limited land availability, which impedes the widespread distribution of photovoltaic systems and the microgrid market’s growth. This study presents a floating photovoltaic system configured as an island microgrid combined with a hybrid power system. The floating photovoltaic system is configured on an idle water body integrated with an existing pumped hydroelectric system. The integration of a current pumped hydroelectric system minimizes a battery energy storage requirement, which compensates for the renewable energy sources’ intermittent power output. We evaluate the optimal power flow of the setup using a reliability index to ensure a stable power supply within the standalone microgrid and maximize the supply power range according to the demand response.

Suggested Citation

  • Yeon-Ju Choi & Byeong-Chan Oh & Moses Amoasi Acquah & Dong-Min Kim & Sung-Yul Kim, 2021. "Optimal Operation of a Hybrid Power System as an Island Microgrid in South-Korea," Sustainability, MDPI, vol. 13(9), pages 1-18, April.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:9:p:5022-:d:546600
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    2. Akbar Maleki & Zahra Eskandar Filabi & Mohammad Alhuyi Nazari, 2022. "Techno-Economic Analysis and Optimization of an Off-Grid Hybrid Photovoltaic–Diesel–Battery System: Effect of Solar Tracker," Sustainability, MDPI, vol. 14(12), pages 1-20, June.
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    5. Rovick Tarife & Yosuke Nakanishi & Yicheng Zhou & Noel Estoperez & Anacita Tahud, 2023. "Integrated GIS and Fuzzy-AHP Framework for Suitability Analysis of Hybrid Renewable Energy Systems: A Case in Southern Philippines," Sustainability, MDPI, vol. 15(3), pages 1-25, January.

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