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Protection for DC Distribution System with Distributed Generator

Author

Listed:
  • Shimin Xue
  • Chaochao Chen
  • Yi Jin
  • Yongli Li
  • Botong Li
  • Ying Wang

Abstract

DC distribution system has advantages of high power quality, large transmission capacity, high reliability, simple structure, economy and low energy consumption, and so forth. It has been a key part of smart grid nowadays. However, the development of DC distribution system is constrained by the lack of operational experience in DC system, the small interrupting capacity of DC circuit breaker (CB), and the lack of protection schemes for system itself. In this paper, protection for DC distribution system with distributed generator (DG) is fully investigated and verified. Firstly, the electromagnetic transient model of DC distribution system with DG is presented. Simulation based on the electromagnetic transient model is carried out. Both the step response and the steady-state performance verify the accuracy of the model. Then the fault characteristic mechanism is analyzed, and the protection principles and scheme are investigated in detail, including voltage mutation principle as protection starting component, differential current protection principle for DC bus, and two-section current protection for distribution lines. Finally, transient responses with protection scheme are analyzed during faults. The results present that the protection principles and scheme are feasible for DC distribution system with DG.

Suggested Citation

  • Shimin Xue & Chaochao Chen & Yi Jin & Yongli Li & Botong Li & Ying Wang, 2014. "Protection for DC Distribution System with Distributed Generator," Journal of Applied Mathematics, Hindawi, vol. 2014, pages 1-12, June.
    • Handle: RePEc:hin:jnljam:241070
    DOI: 10.1155/2014/241070
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    Cited by:

    1. O. D. Montoya & W. Gil-González & J. C. Hernández & D. A. Giral-Ramírez & A. Medina-Quesada, 2020. "A Mixed-Integer Nonlinear Programming Model for Optimal Reconfiguration of DC Distribution Feeders," Energies, MDPI, vol. 13(17), pages 1-22, August.
    2. Jayamaha, D.K.J.S. & Lidula, N.W.A. & Rajapakse, A.D., 2020. "Protection and grounding methods in DC microgrids: Comprehensive review and analysis," Renewable and Sustainable Energy Reviews, Elsevier, vol. 120(C).
    3. Mishra, Manohar & Patnaik, Bhaskar & Biswal, Monalisa & Hasan, Shazia & Bansal, Ramesh C., 2022. "A systematic review on DC-microgrid protection and grounding techniques: Issues, challenges and future perspective," Applied Energy, Elsevier, vol. 313(C).

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