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This paper presents experimental results obtained from texture analysis of microscopy measurements performed on cellulose paper samples which have been thermally deteriorated to different levels. Samples were prepared in vials containing a small sample of Kraft paper tape along with insulating oil that were thermally stressed in an oven at 140 °C for durations of 0, 120, 250, and 400 hours. Analysis...
Power transformer pressboard insulation is subject to thermal aging effects during normal operation that can result in micrometer-scale physical/morphological changes to its surface. Such surface irregularities can increase the likelihood of particle/contaminant attachment to pressboard surfaces or static electrification of oil flowing along these surfaces. Both phenomena can lead to partial discharges...
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