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New Protection Scheme in Loop Distribution System with Distributed Generation

Author

Listed:
  • Hun-Chul Seo

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

Abstract

Loop distribution systems are increasingly used for reasons such as increased distributed generation (DG) and increased demand for a reliable and high-quality power supply. Because the loop distribution system involves bidirectional power flow, the method for protection of the radial distribution system cannot be applied. Therefore, a protection method is proposed herein for loop distribution systems. In this study, the existence of DG is also considered. According to the proposed method, the fault point is estimated on the basis of the equivalent circuit of the distribution system. Then, the fault section is determined and separated from the distribution system. The separation of DG is determined depending on whether the frequency and voltage are maintained within the steady state ranges. The proposed method is modelled and verified using the Electromagnetic Transients Program. Simulations according to the fault location are performed and analyzed. The results show that the method accurately determines the fault section so that normal power can be supplied to the healthy sections in the distribution system.

Suggested Citation

  • Hun-Chul Seo, 2020. "New Protection Scheme in Loop Distribution System with Distributed Generation," Energies, MDPI, vol. 13(22), pages 1-20, November.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:22:p:5897-:d:443764
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    References listed on IDEAS

    as
    1. 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.
    2. Thai-Thanh Nguyen & Woon-Gyu Lee & Hak-Man Kim & Hyung Suk Yang, 2020. "Fault Analysis and Design of a Protection System for a Mesh Power System with a Co-Axial HTS Power Cable," Energies, MDPI, vol. 13(1), pages 1-15, January.
    3. 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. Martin Kanálik & Anastázia Margitová & Ľubomír Beňa & Andrea Kanáliková, 2020. "Power System Impedance Estimation Using a Fast Voltage and Current Changes Measurements," Energies, MDPI, vol. 14(1), pages 1-22, December.
    2. Shahid Nawaz Khan & Syed Ali Abbas Kazmi & Abdullah Altamimi & Zafar A. Khan & Mohammed A. Alghassab, 2022. "Smart Distribution Mechanisms—Part I: From the Perspectives of Planning," Sustainability, MDPI, vol. 14(23), pages 1-109, December.

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