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New Protection Scheme Based on Coordination with Tie Switch in an Open-Loop Microgrid

Author

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  • Hun-Chul Seo

    (School of Electronic&Electrical Engineering, Yonam Institute of Technology, Jinju-si 52821, Gyeongsangnam-do, Korea)

Abstract

Owing to the increase in renewable energy, microgrids (MGs) are increasing. A MG has a small loop-type grid configuration. In the loop MG, challenges in protection such as maloperation of protection relay may occur owing to bidirectional current flow. Herein, we propose a new protection scheme in the loop MG. Considerations for protection in loop MG and fault characteristics are analyzed. Based on these, a new index to solve the considerations for MG protection are proposed using a wavelet transform. Furthermore, the new protection scheme based on the coordination with tie switch using the proposed new index is proposed. To verify the proposed scheme, the MG and the proposed scheme are modeled using the electromagnetic transients program and MATLAB. Various simulations according to the fault location and the success/failure of fault section separation are performed. Simulation results indicate that the power supply on the original feeder can be maintained by proposed method.

Suggested Citation

  • Hun-Chul Seo, 2019. "New Protection Scheme Based on Coordination with Tie Switch in an Open-Loop Microgrid," Energies, MDPI, vol. 12(24), pages 1-19, December.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:24:p:4756-:d:297541
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    References listed on IDEAS

    as
    1. Hun-Chul Seo, 2017. "New Configuration and Novel Reclosing Procedure of Distribution System for Utilization of BESS as UPS in Smart Grid," Sustainability, MDPI, vol. 9(4), pages 1-16, March.
    2. Hun-Chul Seo, 2019. "Novel Protection Scheme considering Tie Switch Operation in an Open-Loop Distribution System using Wavelet Transform," Energies, MDPI, vol. 12(9), pages 1-19, May.
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    Cited by:

    1. Hun-Chul Seo, 2020. "New Protection Scheme in Loop Distribution System with Distributed Generation," Energies, MDPI, vol. 13(22), pages 1-20, November.
    2. Faisal Mumtaz & Haseeb Hassan Khan & Amad Zafar & Muhammad Umair Ali & Kashif Imran, 2022. "A State-Observer-Based Protection Scheme for AC Microgrids with Recurrent Neural Network Assistance," Energies, MDPI, vol. 15(22), pages 1-22, November.
    3. Faisal Mumtaz & Kashif Imran & Abdullah Abusorrah & Syed Basit Ali Bukhari, 2022. "Harmonic Content-Based Protection Method for Microgrids via 1-Dimensional Recursive Median Filtering Algorithm," Sustainability, MDPI, vol. 15(1), pages 1-18, December.

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    1. Hun-Chul Seo, 2020. "New Protection Scheme in Loop Distribution System with Distributed Generation," Energies, MDPI, vol. 13(22), pages 1-20, November.
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