Analysis of Breakdown Voltage Dispersion and Breakdown Process in Mineral Oil

광유 중 절연파괴전압의 분산과 절연파괴진전 과정의 분석

  • Received : 2014.12.23
  • Accepted : 2015.04.21
  • Published : 2015.06.30


This paper presents a breakdown voltage and a process of breakdown progress in mineral oil under an quasi-uniform field with decomposition products which occur after the oil discharge. The breakdown voltage in the oil revealed the characteristics of dispersion regardless of an electrode gap. The cumulative probability distribution was used to analyze the dispersion of the breakdown voltage. In addition, the process of breakdown progress in the oil can be reasonably described by the electron breakdown theory based on both electrons emitted from the cathode and ions by field-aided dissociation of the oil. The proposed breakdown process will be used for the basic data to explain the behavior pattern of the decomposition product to cause the dispersion of the breakdown voltage.


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