Characteristics of electrical tree morphological in glass fibre reinforced epoxy resin under power frequency voltage

Abstract

To study the influence of the arrangement of glass fibres on the growth morphology of electric dendrites, this paper conducted experiments on the initiation and cultivation of electric dendrites on insulation specimens with different glass fibre arrangements. The experimental results show that when the electric field is parallel to the glass fibres, the electric dendrites show linear growth with multiple branches; when the electric field is perpendicular to the glass fibres, the electric dendrites show aggregated growth. The analysis suggests that when the applied electric field is parallel to the glass fibre, to release the discharge energy in the main channel of the dendrite, the discharge in the track of the electric dendrite will drive the electric dendrite to grow along the interface area between the glass fibre and the epoxy resin. When the externally applied electric field is perpendicular to the glass fibre, the discharge within the electric dendrite discharge channel is high. To release the energy in the electrical tree channel, the blast in the electrical tree track induces the electrical tree branch to grow along the interface area and forward.

Retraction Note: Characteristics of electric tree initiation in glass fiber reinforced epoxy resin under power frequency voltage

“…The Editor-in-Chief has retracted this article because a similar manuscript [1] by the same authors had been under peer review in the same time frame without proper citation or disclosure to the editors.…”

Impact of Mendong fiber–epoxy composite interface properties on electric field frequency exposure

“…Morphology and properties of epoxy change in the presence of electric field 38 . In the frequency range of 10 −3 to 10 6 Hz, the polymer exhibits two dipolar relaxation processes associated with macromolecule movements related to the glass transition phenomenon 39 .…”

“…36 Morphology and properties of epoxy change in the presence of electric field. 38 In the frequency range of 10 À3 to 10 6 Hz, the polymer exhibits two dipolar relaxation processes associated with macromolecule movements related to the glass transition phenomenon. 39 The curing frequency and time have a role in changing the polymer orientation; for example, a slight change in frequency will determine the direction of the polymer structure, whether perpendicular or parallel, with respect to the electric field direction.…”

Machine Learning Technique to Predict Flashover Voltage of Nanocomposite Materials

“…However, when utilized in environments with high temperatures, high humidity, the presence of contaminants, and UV radiation, epoxy resin is an extremely sensitive insulating substance. The key benefits of epoxy resin as an insulator material over porcelain are that it is substantially lighter, easier to handle, blends with additives easily, and has hydrophobicity [10][11][12][13][14].…”