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A P-Q Arc Suppression Method Based on DC-Link Voltage Stability for Hybrid Multifunctional Arc Suppression Devices

Author

Listed:
  • Hongwen Liu

    (Electric Power Research Institute, Yunnan Power Grid Co., Ltd., Kunming 650217, China)

  • Zejun Huang

    (National Electric Power Conversion and Control Engineering Technology Research Center, Hunan University, Changsha 410082, China)

  • Chunli Zhang

    (Electric Power Research Institute, Yunnan Power Grid Co., Ltd., Kunming 650217, China)

  • Qi Guo

    (National Electric Power Conversion and Control Engineering Technology Research Center, Hunan University, Changsha 410082, China)

  • Jindong Yang

    (Electric Power Research Institute, Yunnan Power Grid Co., Ltd., Kunming 650217, China)

Abstract

The traditional arc suppression device suffers from high costs and low utilization. These problems can be effectively avoided by using a hybrid multi-function arc suppression device (HMF-ASD). However, an HMF-ASD will consume active power during arc suppression. Based on this, a P-Q arc suppression method based on DC-link voltage stability is proposed. The energy flow during a single line-to-ground (SLG) fault is analyzed to optimize operation of the HMF-ASD. The topology and principle of the HMF-ASD are introduced. Secondly, the influence mechanism of the traditional arc suppression method on the output active power and energy flow direction of the HMF-ASD is analyzed. The internal reason for the change in the DC-link voltage is clarified. Additionally, non-fault phases of the HMF-ASD are regulated to produce no active output, delivering only the reactive current required for arc suppression. This method effectively mitigates SLG faults while maintaining DC-link voltage stability. Non-fault phases exclusively supply reactive power, with the active power needed for arc suppression drawn directly from the grid. The validity of the proposed method is confirmed through both simulation and experiment.

Suggested Citation

  • Hongwen Liu & Zejun Huang & Chunli Zhang & Qi Guo & Jindong Yang, 2025. "A P-Q Arc Suppression Method Based on DC-Link Voltage Stability for Hybrid Multifunctional Arc Suppression Devices," Energies, MDPI, vol. 18(16), pages 1-17, August.
    • Handle: RePEc:gam:jeners:v:18:y:2025:i:16:p:4278-:d:1722301
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