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A Protection System for Improved Ring-Bus DC Microgrids

Author

Listed:
  • Zhiming Zhang

    (Key Laboratory of Power System Intelligent Dispatch and Control, Shandong University, Ministry of Education, Jinan 250061, China)

  • Qing Chen

    (Key Laboratory of Power System Intelligent Dispatch and Control, Shandong University, Ministry of Education, Jinan 250061, China)

  • Ranran Xie

    (State Grid TianJin BinHai Electric Power Supply Company, Tianjin 300450, China)

  • Yi Zheng

    (State Grid Jining Power Supply Company, Jining 272000, China)

Abstract

An improved system structure and a corresponding protection system are proposed in this paper, which aims at providing future DC microgrids with suitable protection ideas. At first, the ring-bus system is adjusted to balance the system control and protection and make the system more conventional for the equipment expansion. In addition, based on this structure, a protection system is established. It consists of two parts, which are local protection and pilot centralized protection. The local protection is designed for protecting the vulnerable power electronic components in converters and the pilot protection is mainly proposed for the fault isolation. The combination between two parts makes the whole system overcome the contradiction between protection speed and reliability and the method also takes the protection suitability into consideration. Finally, all the methods are verified by the simulation system based on the PSCAD /EMTDC.

Suggested Citation

  • Zhiming Zhang & Qing Chen & Ranran Xie & Yi Zheng, 2019. "A Protection System for Improved Ring-Bus DC Microgrids," Energies, MDPI, vol. 12(19), pages 1-14, October.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:19:p:3778-:d:273550
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    References listed on IDEAS

    as
    1. Benedetto Aluisio & Maria Dicorato & Imma Ferrini & Giuseppe Forte & Roberto Sbrizzai & Michele Trovato, 2019. "Optimal Sizing Procedure for Electric Vehicle Supply Infrastructure Based on DC Microgrid with Station Commitment," Energies, MDPI, vol. 12(10), pages 1-19, May.
    2. Haifeng Liang & Yue Dong & Yuxi Huang & Can Zheng & Peng Li, 2018. "Modeling of Multiple Master–Slave Control under Island Microgrid and Stability Analysis Based on Control Parameter Configuration," Energies, MDPI, vol. 11(9), pages 1-18, August.
    3. Zhongbin Zhao & Jing Zhang & Yu He & Ying Zhang, 2019. "Island DC Microgrid Hierarchical Coordinated Multi-Mode Control Strategy," Energies, MDPI, vol. 12(15), pages 1-20, August.
    4. Haifeng Liang & Yuxi Huang & Hao Sun & Zhiqian Liu, 2019. "Research on Large-Signal Stability of DC Microgrid Based on Droop Control," Energies, MDPI, vol. 12(16), pages 1-14, August.
    5. Liang Zhang & Kang Chen & Shengbin Chi & Ling Lyu & Guowei Cai, 2019. "The Hierarchical Control Algorithm for DC Microgrid Based on the Improved Droop Control of Fuzzy Logic," Energies, MDPI, vol. 12(15), pages 1-17, August.
    Full references (including those not matched with items on IDEAS)

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