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Modeling and Estimation of Break Arc Extinction Distance in Low Voltage DC Systems

Author

Listed:
  • Yong-Jung Kim

    (Energy Valley R&D Center, Korea Electric Power Research Institute, 55, Jeollyeok-ro, Naju 583-22, Jeonnam, Korea)

  • Hyo-Sung Kim

    (Division of Electrical, Electronic and Control Engineering, Kongju National University, 275 Budae, Cheonan 310-80, Chungnam, Korea)

Abstract

Recently, as DC power generation and DC loads such as renewable energy and EVs increase, the need for a low-voltage direct current (LVDC) distribution system has gradually emerged. The DC system has various advantages, such as system stability, transmission efficiency, and connectivity to renewable power generation compared to AC distribution systems. One of the important technical issues for commercialization of DC distribution system is safety. Since the DC system does not have a current zero point, unlike the AC system, a breaking arc accompanied by a high-temperature plasma is easily generated when the circuit is cut off. The arc can cause fire accidents that threaten people and facilities. In order to prevent customers and facilities from the accidents caused by the arc in the DC system, a study on the characteristics of the DC breaking arc is necessary. An important factor of characteristics for the DC breaking arc fault is an arc extinction distance at which the DC breaking arc is completely extinguished. There are two major behaviors in DC breaking arc; one is active behavior where the arc voltage is inversely related with the arc current for a given gap distance, the other is passive behavior where the arc voltage is negatively proportional to the arc current according to Kirchhoff’s voltage rule. This paper combines the two arc characteristics together to establish a DC breaking arc model, and proposes a method to estimate the arc extinction distance. Experiment results verify the method under various power and load conditions.

Suggested Citation

  • Yong-Jung Kim & Hyo-Sung Kim, 2021. "Modeling and Estimation of Break Arc Extinction Distance in Low Voltage DC Systems," Energies, MDPI, vol. 14(20), pages 1-15, October.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:20:p:6646-:d:655997
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    References listed on IDEAS

    as
    1. Jun He & Ke Wang & Jiangang Li, 2021. "Application of an Improved Mayr-Type Arc Model in Pyro-Breakers Utilized in Superconducting Fusion Facilities," Energies, MDPI, vol. 14(14), pages 1-11, July.
    2. Wooho Kim & Yong-Jung Kim & Hyosung Kim, 2018. "Arc Voltage and Current Characteristics in Low-Voltage Direct Current," Energies, MDPI, vol. 11(10), pages 1-14, September.
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