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Short-Circuit Fault Current Calculation Method for the Multi-Terminal DC Grid Considering the DC Circuit Breaker

Author

Listed:
  • Haipeng Jia

    (Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China
    School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 100049, China)

  • Jingyuan Yin

    (Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China)

  • Tongzhen Wei

    (Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China
    School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 100049, China)

  • Qunhai Huo

    (Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China)

  • Jinke Li

    (China Energy Engineering Group, Jiangsu Power Design Institute Co., LTD, Nanjing 211102, China)

  • Lixin Wu

    (Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China)

Abstract

The analysis and calculation of the short-circuit fault current in the DC grid is of great significance to the design and configuration of the converter station and DC circuit breaker parameters. The existing flexible DC system not only includes the modular multilevel converter (MMC) converter, but also needs power equipment such as the fault current limiter and DC circuit breaker. Therefore, the system modeling and short circuit calculation of the multi-terminal DC system after adding the DC circuit breaker are also of great significance for the design of DC power system parameters and the grid troubleshooting ability. In this paper, firstly, the parameters of the four-terminal DC system of the modular multilevel converter (MMC) are simplified, and the analytical solution of the short circuit fault current of the multi-terminal DC system is given. Then, the external characteristics of the cascaded hybrid DC circuit breaker are modeled. Based on the equivalent circuit of the fault current in different stages, the short circuit calculation method of four-terminal MMC system with DC circuit breaker is obtained. This method can effectively describe the overall trend of fault current and provide the basis for the configuration of DC line protection settings and DC circuit breaker related parameters.

Suggested Citation

  • Haipeng Jia & Jingyuan Yin & Tongzhen Wei & Qunhai Huo & Jinke Li & Lixin Wu, 2020. "Short-Circuit Fault Current Calculation Method for the Multi-Terminal DC Grid Considering the DC Circuit Breaker," Energies, MDPI, vol. 13(6), pages 1-23, March.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:6:p:1347-:d:332372
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    Citations

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    Cited by:

    1. Geon Kim & Jin Sung Lee & Jin Hyo Park & Hyun Duck Choi & Myoung Jin Lee, 2021. "A Zero Crossing Hybrid Bidirectional DC Circuit Breaker for HVDC Transmission Systems," Energies, MDPI, vol. 14(5), pages 1-12, March.
    2. Sangyong Park & Hyosang Choi, 2020. "Operation Characteristics for the Superconducting Arc-Induction Type DC Circuit Breaker," Energies, MDPI, vol. 13(15), pages 1-13, July.
    3. Kwang-Hoon Yoon & Joong-Woo Shin & Jae-Chul Kim & Hyeong-Jin Lee & Jin-Seok Kim, 2022. "Simulation of a Low-Voltage Direct Current System Using T-SFCL to Enhance Low Voltage Ride through Capability," Energies, MDPI, vol. 15(6), pages 1-11, March.

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