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Control Strategy for Line Overload and Short Circuit Current of Networked Distribution Systems

Author

Listed:
  • Junwoo Lee

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

  • Wookyu Chae

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

  • Woohyun Kim

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

  • Sungyun Choi

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

Abstract

The expected increase in renewable energy sources (RESs) and electric vehicles (EVs) connected to distribution systems will result in many technical constraints. A meshed network is a promising solution; however, some remarkable challenges must be overcome. Among these, this paper mainly focuses on the line overload and short circuit current of a networked distribution system (NDS) in Korea, an advanced form of meshed network. An NDS refers to a system in which there exists permanent linkages between four feeders and N × N communication-based protection. We propose a method, which employs the tap changing control algorithm of the series reactor to control line overload and short circuit current. MATLAB/Simulink was used to evaluate the proposed method. Three different types of distribution system were employed. First, the utilization rate and feeder imbalance were analyzed in steady-state condition. Subsequently, the short circuit current was analyzed in short circuit condition. The results revealed that the proposed method can effectively prevent line overload in up to 82.7% of cases, enhance the utilization rate by up to 79.9%, and relieve the short circuit current; that is, it can contribute to system stability and the economic operation of an NDS.

Suggested Citation

  • Junwoo Lee & Wookyu Chae & Woohyun Kim & Sungyun Choi, 2022. "Control Strategy for Line Overload and Short Circuit Current of Networked Distribution Systems," Sustainability, MDPI, vol. 14(7), pages 1-17, April.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:7:p:4208-:d:785286
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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.
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    Cited by:

    1. Woo-Hyun Kim & Woo-Kyu Chae & Hyeon-Myeong Lee & Hyun-Woo No & Dong-Sub Kim, 2022. "Development Status and Future Strategies of Networked Distribution System," Sustainability, MDPI, vol. 14(18), pages 1-25, September.
    2. 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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