Inception and Propagation of Electrical Trees in the Presence of Space Charge in HVAC Extruded Cables

Saleh, Mohammad AlShaikh; Refaat, Shady S.; Olesz, Marek; Abu‐Rub, Haitham

doi:10.1109/tdei.2021.009609

Cited by 15 publications

(2 citation statements)

References 15 publications

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“…This may be due to the decrease in the electric field intensity inside the channels caused by the carbonisation of tree channels at higher frequencies [30]. Meanwhile, the electrical tree is inclined to form bifurcations and clumps at high frequencies, which will homogenise the electric field strength at the needle tip [31]. Therefore, the growth rates of the electrical tree at high frequencies (>2 kHz) do not increase significantly with the imposed frequency.…”

Section: Discussionmentioning

confidence: 99%

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Electrical tree degradation of MgO/epoxy resin composites at different voltage frequencies

Zhang,

Lin,

Zhou

et al. 2024

High Voltage

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Electrical tree degradation is one of the main causes of insulation failure in high‐frequency transformers. Electrical tree degradation is studied on pure epoxy resin (EP) and MgO/EP composites at frequencies ranging from 50 Hz to 130 kHz. The results show that the tree initiation voltage of EP decreases, while the growth rate and the expansion coefficient increase with frequency. Moreover, the bubble phenomenon at high frequencies in EP composites is discussed. Combined with trap distribution characteristics within the material, the intrinsic mechanism of epoxy composites to inhibit the growth of the electrical tree at different frequencies is discussed. It can be concluded that more deep traps and blocking effect are introduced by doping nano‐MgO into EP bulks, which can improve the electrical tree resistance performance of EP composites in a wide frequency range.

show abstract

Section: Discussionmentioning

confidence: 99%

“…bifurcations and clumps at high frequencies, which will homogenise the electric field strength at the needle tip [31]. Therefore, the growth rates of the electrical tree at high frequencies (>2 kHz) do not increase significantly with the imposed frequency.…”

Section: Influence Of Frequency On Electrical Tree Characteristicsmentioning

confidence: 99%

Electrical tree degradation of MgO/epoxy resin composites at different voltage frequencies

Zhang,

Lin,

Zhou

et al. 2024

High Voltage

View full text Add to dashboard Cite

show abstract

Thermal aged XLPE cables restoration by injecting hydrolyzable voltage stabilizer

Chen

et al. 2022

J Polym Res

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Investigation of electrical tree growth characteristics and partial discharge pattern analysis using deep neural network

Sahoo

Karmakar

2023

Electric Power Systems Research

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Inception and Propagation of Electrical Trees in the Presence of Space Charge in HVAC Extruded Cables

Cited by 15 publications

References 15 publications

Electrical tree degradation of MgO/epoxy resin composites at different voltage frequencies

Electrical tree degradation of MgO/epoxy resin composites at different voltage frequencies

Thermal aged XLPE cables restoration by injecting hydrolyzable voltage stabilizer

Investigation of electrical tree growth characteristics and partial discharge pattern analysis using deep neural network

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