模擬ボイドモデルを用いた微小空隙内のPD劣化・破壊特性

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  • 今井 國治
    名古屋大学医学部保健学科放射線技術科学専攻

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  • Properties of PD Degradation/Breakdown in a Micro Gap with an Artificial Void Model

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説明

In this study, an artificial void model was made on the basis of the Whitehead abc model and time to breakdown of a PP film which formed the artificial void was investigated with the Weibull distribution. Voltage dependence of time to breakdown of the PP film (V-t characteristic) becomes discontinuous at a certain voltage between 12 and 13kV. Furthermore, repetition of the breakdown mechanism transition (fatigue-failure- type→ random-failure-type or early/random-failure- type) occurs at the certain voltage. These results suggest that patterns of surface discharge in the artificial void change from Polbüschel to Gleitbüschel.

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