1996
DOI: 10.1088/0022-3727/29/10/023
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Abstract: Combined partial discharge detection and video monitoring of the tree growth have shown a strong correlation between the partial discharge activity and the spatial and temporal development of electrical tree growth in CY1311 epoxy resin. CCD imaging of the spatial distribution of light emitted, due to partial discharges in the tree structure, has shown that the different modes of partial discharge behaviour reflect their different spatial distribution within the existing tree structure, with new growth occurri… Show more

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Cited by 72 publications
(59 citation statements)
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“…The acquisition period was 20s at each level and during this interval, the partial discharges were counted. Further details of the threshold detector and PD counter can be found in reference [7].…”
Section: Methodsmentioning
confidence: 99%
“…The acquisition period was 20s at each level and during this interval, the partial discharges were counted. Further details of the threshold detector and PD counter can be found in reference [7].…”
Section: Methodsmentioning
confidence: 99%
“…Moreover, the reduction of the probability for PD to propagate to the tree tip may also lead to the decrease of the growth rate of the tree tip. This can also explain why PD is concentrated at the needle tip in a bush-like tree, but it can propagate to tree tips in a tree-like tree [13]. And in the bush/branch-type tree, the burst type of PD which was observed throughout the tree structure [13] may be explained as follows: the larger PD may lead to an instant increase of the gas pressure, and as a result, the larger PD ceases for some period for gas dissipation.…”
Section: Change Of Pd Behavior With Gas Pressure and Branch-bush Tranmentioning
confidence: 96%
“…According to this model, PD should be more intensive at the tree tips because of the higher local field there. But this can not explain some of the light-emission experiments [8,13] which indicate that PD is usually concentrated near the tip of the needle electrode in a certain period after tree initiation.…”
Section: Introductionmentioning
confidence: 93%
“…Owing to the harsh working conditions of power electrical equipment, there have been many investigations to determine the influence of temperature, voltage type, voltage frequency, thermal aging, and moisture on electrical treeing characteristics [8][9][10][11][12][13][14][15]. Partial discharge characteristics, treeing imaging technology, and channel characteristics have also been studied in order to better understanding the initiation and growth mechanisms of electrical treeing [2,7,[16][17][18].…”
Section: Introductionmentioning
confidence: 99%