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Appropriate Protection Scheme for DC Grid Based on the Half Bridge Modular Multilevel Converter System

Author

Listed:
  • Ho-Yun Lee

    (Department of Electronic Engineering, Hanyang University, Hanyangdaehak-ro 55, Ansan 15588, Korea)

  • Mansoor Asif

    (Department of Electronic Engineering, Hanyang University, Hanyangdaehak-ro 55, Ansan 15588, Korea)

  • Kyu-Hoon Park

    (Department of Electronic Engineering, Hanyang University, Hanyangdaehak-ro 55, Ansan 15588, Korea)

  • Hyun-Min Mun

    (Department of Electronic Engineering, Hanyang University, Hanyangdaehak-ro 55, Ansan 15588, Korea)

  • Bang-Wook Lee

    (Department of Electronic Engineering, Hanyang University, Hanyangdaehak-ro 55, Ansan 15588, Korea)

Abstract

The half bridge (HB) modular multilevel converter (MMC) technology is considered a breakthrough to mitigate the shortcomings of the conventional voltage source converter (VSC) in high-voltage direct-current (HVDC) grid application. However, interruption of the DC fault is still a challenge due to fast di/dt and extremely high levels of DC fault current. The fault interruption using a DC circuit breaker (DCCB) causes enormous energy dissipation and voltage stress across the DCCB. Therefore, the use of a fault current limiter is essential, and the superconducting fault current limiter (SFCL) is the most promising choice. Past literature has focused on the operating characteristics of DCCB or limiting characteristics of the SFCL. However, there is little understanding about the fault interruption and system recovery characteristics considering both DCCB and SFCL. In this paper, we have presented a comparative study on fault interruption and system recovery characteristics considering three types of fault limiting devices in combination with circuit breaker. The transient analyses of AC and DC system have been performed, to suggest the most preferable protection scheme. It has been concluded that, amongst the three fault limiting devices, the Hybrid SFCL in combination with circuit breaker, delivers the most desirable performance in terms of interruption time, recovery time, energy dissipation and voltage transients.

Suggested Citation

  • Ho-Yun Lee & Mansoor Asif & Kyu-Hoon Park & Hyun-Min Mun & Bang-Wook Lee, 2019. "Appropriate Protection Scheme for DC Grid Based on the Half Bridge Modular Multilevel Converter System," Energies, MDPI, vol. 12(10), pages 1-25, May.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:10:p:1837-:d:231228
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    References listed on IDEAS

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    1. Zheng Xu & Huangqing Xiao & Liang Xiao & Zheren Zhang, 2018. "DC Fault Analysis and Clearance Solutions of MMC-HVDC Systems," Energies, MDPI, vol. 11(4), pages 1-16, April.
    2. Lei Chen & Xiude Tu & Hongkun Chen & Jun Yang & Yayi Wu & Xin Shu & Li Ren, 2016. "Technical Evaluation of Superconducting Fault Current Limiters Used in a Micro-Grid by Considering the Fault Characteristics of Distributed Generation, Energy Storage and Power Loads," Energies, MDPI, vol. 9(10), pages 1-21, September.
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    Cited by:

    1. Siyuan Liang & Yuejin Tang & Li Ren & Ying Xu & Jing Shi & Zheng Li & Xiangyu Tan, 2019. "Parameter Matching and Optimization of a Hybrid Type DC SFCL Considering the Transient Characteristics of VSC-Based DC Systems," Energies, MDPI, vol. 12(18), pages 1-32, September.

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