2000
DOI: 10.1088/0022-3727/33/10/311
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Abstract: The model for partial discharges (PDs) in tree channels indicates that PDs in an electrical tree are inclined to be induced and concentrated near the needle tip, and the total field distribution is dynamically influenced by the PDs. In view of the effects of PDs on tree growth, a new model for tree growth is put forward. Tree growth is related to both the damage caused by PDs and by the local field. In the early stage of tree growth, the damage by PDs is concentrated near the needle tip, but the damage by the … Show more

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Cited by 24 publications
(16 citation statements)
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“…The increasing branch density (fractal dimension) was due to the greater number of side branches that could discharge as the applied voltage was increased and the decreasing growth rate due to reduced electrostatic energy dissipation in the outermost tree segments. Other processes, such as gas pressure buildup within the tree channels [11,12] or a competition between different growth mechanisms [33], need not necessarily be invoked to explain the branch to bush transition. This tree growth-voltage behaviour was therefore determined by the process itself and not by the material.…”
Section: Discussionmentioning
confidence: 99%
“…The increasing branch density (fractal dimension) was due to the greater number of side branches that could discharge as the applied voltage was increased and the decreasing growth rate due to reduced electrostatic energy dissipation in the outermost tree segments. Other processes, such as gas pressure buildup within the tree channels [11,12] or a competition between different growth mechanisms [33], need not necessarily be invoked to explain the branch to bush transition. This tree growth-voltage behaviour was therefore determined by the process itself and not by the material.…”
Section: Discussionmentioning
confidence: 99%
“…They can propagate through the dielectric by means of partial discharge (PD) activity occurring within the existing structure [2]. Therefore, PD activity is a valuable indicator for the extent of the electrical tree growth.…”
Section: Introductionmentioning
confidence: 99%
“…In our previous papers [1][2][3], partial discharges (PDs) in tree channels and the process of tree growth in the early stage after tree initiation were studied. However, when the electrode separation is long or the applied voltage is low so that the tree cannot directly grow to the plane electrode, the tree almost stops growing when it extends to a certain length; and after a long time, fast re-growth of new channels and a reduction of the PD magnitude are often observed [4,5].…”
Section: Introductionmentioning
confidence: 99%