Journal of Electrical Engineering and Technology

  • 제4권1호
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  • Pages.111-117
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  • 2009
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  • 1975-0102(pISSN)
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  • 2093-7423(eISSN)
대한전기학회 (The Korean Institute of Electrical Engineers)
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Electrical Behaviors of ZnO Elements under Combined Direct and Alternating Voltages

  • Yang, Soon-Man (School of Electrical Engineering, Inha University) ;
  • Lee, Bok-Hee (School of Electrical Engineering, Inha University) ;
  • Paek, Seung-Kwon (Department of Electronics and Intelligent Robotics Engineering, Inje University)
  • 발행 : 2009.03.01
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초록

This paper presents the characteristics of leakage currents flowing through zinc oxide (ZnO) surge arrester elements under the combined direct-current (DC) and 60 Hz alternating-current (AC) voltages. The current-voltage characteristic curves (I-V curves) of the commercial ZnO surge arrester elements were obtained as a function of the voltage ratio a. At constant peak value of the combined DC and AC voltage, the resistive leakage current of the ZnO blocks was significantly increased as the voltage ratio $\alpha$ increased. The I-V curves under the combined DC and AC voltages were placed between the pure DC and AC characteristics, and the cross-over phenomenon in both the I-V curves and R-V curves was observed at the low current region. The ZnO power dissipation for DC voltages was less than that for AC voltage in the pre-breakdown region and reversed at higher voltages.

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참고문헌

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피인용 문헌

  1. Condition monitoring of electrical assets using digital IRT and AI technique 2018, https://doi.org/10.1016/j.jesit.2017.10.001
  2. Deterioration Characteristics of ZnO Surge Arrester Blocks for Power Distribution Systems Due to Impulse Currents vol.27, pp.3, 2013, https://doi.org/10.5207/JIEIE.2013.27.3.079
  3. Electrical Characteristics of ZnO Surge Arrester Elements Subjected to the Mixed DC and 60[Hz] AC Voltages vol.26, pp.4, 2012, https://doi.org/10.5207/JIEIE.2012.26.4.041