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Influence of insulating barrier on the creepage discharge in transformer oil

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6 Author(s)
Nakao, Y. ; Dept. of Electr. & Electron. Eng., Muroran Inst. of Technol., Japan ; Naruse, M. ; Suzuki, Y. ; Itoh, H.
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The propagation aspects of a creepage discharge in transformer oil are observed simultaneously and in detail under a positive impulse voltage condition, by means of a high-speed Schlieren optical system, an LED current measurement system and a charge measurement system using a capacitor. In the present paper, the influence of the material type and the thickness of insulating barriers on the propagation of the impulse creepage discharge are discussed for a point to plane electrode geometry. In addition, the influence of a barrier surface to the electric field direction on the propagation of the impulse creepage discharge is discussed for a parallel plane electrode gap with a protruding point

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Dielectrics and Electrical Insulation, IEEE Transactions on  (Volume:4 ,  Issue: 6 )