The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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A Study on Corona Inception Voltage and Dielectric Characteristics of Thermally Aged Mineral and Vegetable Insulation Oil in Medium Voltage Power Transformer

식물유 및 광유를 사용한 배전변압기의 열열화에 따른 절연유의 코로나 개시전압 및 전기적 특성에 대한 연구

  • Received : 2017.08.29
  • Accepted : 2017.11.06
  • Published : 2017.12.01
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Abstract

Starting from the distribution transformer, the insulation oil for the oil immersed power transformer is being used to convert the vegetable oil from the existing mineral oil. Vegetable oil is better in temperature characteristics and insulation performance, is not toxic, and has better biodegradable characteristic than that of mineral oil. In order to investigate the corona inception voltage and dieclectic charateristics of the two insulating oils, three oil immersed transformers using mineral oil and vegetable oil were made and thermal cyclic aged. In this paper, the changes in the corona discharge inception voltage, chemical and electrical properties of the two sampled insulating oils from the transformers had been studied.

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References

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