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Strategy for Optimal Grid Planning and System Evaluation of Networked Distribution Systems

Author

Listed:
  • Junwoo Lee

    (School of Electrical Engineering, Korea University, Seoul 02841, Korea)

  • Myungseok Yoon

    (School of Electrical Engineering, Korea University, Seoul 02841, Korea)

  • Wookyu Chae

    (Smart Power Distribution Laboratory, Distribution Planning Group, KEPCO Research Institute, Daejeon 34056, Korea)

  • Woohyun Kim

    (Smart Power Distribution Laboratory, Distribution Planning Group, KEPCO Research Institute, Daejeon 34056, Korea)

  • Sungyun Choi

    (School of Electrical Engineering, Korea University, Seoul 02841, Korea)

Abstract

The meshed network may become a standard for future distribution systems owing to its various benefits regarding voltage profile, reliability, losses, and the distributed generation (DG). Therefore, in Korea, there is a plan to introduce an advanced form of meshed network called a networked distribution system (NDS). This refers to a system with permanent linkages between four distribution lines (DLs) and N × N communication-based protection. To properly introduce NDS to an actual grid, this study proposes a strategy for optimal grid planning and system evaluation. Four different topologies and four practical indicators are explained. First, load imbalance is used to find the optimal grid that maximizes the load capacity. Second, line overload, fault current, and temporary overvoltage (TOV) were used to evaluate the necessity of load transfer, availability of circuit breakers, relay settings, and system stability. PSCAD/EMTDC were employed for the simulation. This study establishes the construction and evaluation guidelines of NDS for distribution system operators (DSOs).

Suggested Citation

  • Junwoo Lee & Myungseok Yoon & Wookyu Chae & Woohyun Kim & Sungyun Choi, 2021. "Strategy for Optimal Grid Planning and System Evaluation of Networked Distribution Systems," Sustainability, MDPI, vol. 14(1), pages 1-18, December.
    • Handle: RePEc:gam:jsusta:v:14:y:2021:i:1:p:304-:d:712950
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    References listed on IDEAS

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    1. Marco R. M. Cruz & Desta Z. Fitiwi & Sérgio F. Santos & Sílvio J. P. S. Mariano & João P. S. Catalão, 2018. "Prospects of a Meshed Electrical Distribution System Featuring Large-Scale Variable Renewable Power," Energies, MDPI, vol. 11(12), pages 1-17, December.
    2. Victor Widiputra & Junhyuk Kong & Yejin Yang & Jaesung Jung & Robert Broadwater, 2020. "Maximizing Distributed Energy Resource Hosting Capacity of Power System in South Korea Using Integrated Feeder, Distribution, and Transmission System," Energies, MDPI, vol. 13(13), pages 1-15, July.
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    Cited by:

    1. Yoon, Myungseok & Cho, Namhun & Choi, Sungyun, 2023. "Analysis of temporary overvoltage due to inverter-based distributed generation in networked distribution systems," Applied Energy, Elsevier, vol. 341(C).

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