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DC Fault Analysis and Clearance Solutions of MMC-HVDC Systems

Author

Listed:
  • Zheng Xu

    (College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China)

  • Huangqing Xiao

    (College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China)

  • Liang Xiao

    (College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China)

  • Zheren Zhang

    (College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China)

Abstract

In this paper, the DC short-circuit fault and corresponding clearance solutions of modular multilevel converter-based high-voltage direct current (MMC-HVDC) systems are analyzed in detail. Firstly, the analytical expressions of DC fault currents before and after blocking the MMC are derived based on the operation circuits. Before blocking the MMC, the sub-module (SM) capacitor discharge current is the dominant component of the DC fault current. It will reach the blocking threshold value in several milliseconds. After blocking the MMC, the SM capacitor is no longer discharged. Therefore, the fault current from the AC system becomes the dominant component. Meanwhile, three DC fault clearance solutions and the corresponding characteristics are discussed in detail, including tripping AC circuit breaker, adopting the full-bridge MMC and employing the DC circuit breaker. A simulation model of the MMC-HVDC is realized in PSCAD/EMTDC and the results of the proposed analytical expressions are compared with those of the simulation. The results show that the analytical DC fault currents coincide well with the simulation results.

Suggested Citation

  • 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.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:4:p:941-:d:141202
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    References listed on IDEAS

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    1. Nicolosi, Marco, 2010. "Wind power integration and power system flexibility-An empirical analysis of extreme events in Germany under the new negative price regime," Energy Policy, Elsevier, vol. 38(11), pages 7257-7268, November.
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    Cited by:

    1. Ruixiong Yang & Ke Fang & Jianfu Chen & Yong Chen & Min Liu & Qingxu Meng, 2023. "A Novel Protection Strategy for Single Pole-to-Ground Fault in Multi-Terminal DC Distribution Network," Energies, MDPI, vol. 16(6), pages 1-16, March.
    2. 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.
    3. Munif Nazmus Sakib & Sahar Pirooz Azad & Mehrdad Kazerani, 2022. "A Critical Review of Modular Multilevel Converter Configurations and Submodule Topologies from DC Fault Blocking and Ride-Through Capabilities Viewpoints for HVDC Applications," Energies, MDPI, vol. 15(11), pages 1-32, June.
    4. 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.
    5. Ricardo Granizo Arrabé & Carlos A. Platero & Fernando Álvarez Gómez & Emilio Rebollo López, 2018. "New Differential Protection Method for Multiterminal HVDC Cable Networks," Energies, MDPI, vol. 11(12), pages 1-16, December.
    6. Yuqi Pang & Gang Ma & Xunyu Liu & Xiaotian Xu & Xinyuan Zhang, 2021. "A New MMC Sub-Module Topology with DC Fault Blocking Capability and Capacitor Voltage Self-Balancing Capability," Energies, MDPI, vol. 14(12), pages 1-17, June.
    7. Navid Bayati & Hamid Reza Baghaee & Mehdi Savaghebi & Amin Hajizadeh & Mohsen N. Soltani & Zhengyu Lin, 2021. "DC Fault Current Analyzing, Limiting, and Clearing in DC Microgrid Clusters," Energies, MDPI, vol. 14(19), pages 1-19, October.
    8. Xiaomin Qi & Wei Pei & Luyang Li & Li Kong, 2018. "A Fast DC Fault Detection Method for Multi-Terminal AC/DC Hybrid Distribution Network Based on Voltage Change Rate of DC Current-Limiting Inductor," Energies, MDPI, vol. 11(7), pages 1-22, July.

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