Electrical treeing and the associated PD characteristics in LDPE nanocomposites

Alapati, Sridhar; Thomas, M. Joy

doi:10.1109/tdei.2012.6180265

Cited by 69 publications

(40 citation statements)

References 28 publications

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“…Moreover, the electrical trees explicitly degrade the epoxy resin, since they propagate only through it and not through the nanoparticles. The nanoparticles act as obstacles to trees propagation and thus, tortuous tree paths are formed [6]. Trees development towards the plane electrode retards and thus, nanocomposite dielectric lifetime increases.…”

Section: Simulation Resultsmentioning

confidence: 99%

Electrical degradation due to treeing in nanocomposite dielectric materials with impurities

Pitsa

Danikas

2012

2012 IEEE 10th International Conference on the Properties and Applications of Dielectric Materials

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Treeing phenomena in nanocomposite dielectric materials due to the presence of impurities are investigated using a Cellular Automata (CA) model. A needle-plane electrode configuration under the application of a DC voltage is used in order to examine the degradation that is caused by electrical trees that initiate from impurities in titania/epoxy nanocomposites. Air-filled voids and conductive particles comprise impurities from which electrical trees initiate and propagate in the dielectric material. The simulation results indicate that the presence of impurities provokes degradation of the nanocomposite dielectric. The degree of degradation depends on the number of impurities presence within the dielectric. Additionally, it is observed that the trees that initiate from impurities are hindered by the nanoparticles presence.

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Section: Simulation Resultsmentioning

confidence: 99%

Electrical degradation due to treeing in nanocomposite dielectric materials with impurities

Pitsa

Danikas

2012

2012 IEEE 10th International Conference on the Properties and Applications of Dielectric Materials

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“…Once the tree initiates, it starts to propagate through the polymer matrix due to the continuous occurrence of the partial discharges inside the tree channel. If we consider the electrical treeing as a discharge phenomenon, the slow propagation of the electrical tree growth can be explained as due to the improved partial discharge resistance of polymer material [35].…”

Section: Pd Characteristics Of the Materialsmentioning

confidence: 99%

Electric field inducement of montmorillonite in ldpe and properties of electrical tree growing in this composite

Yang

Bai

Liu

et al. 2015

IEEE Trans. Dielect. Electr. Insul.

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The electric field-induced method is proposed to orient montmorillonite (MMT) in lowdensity polyethylene (LDPE) and improve the electrical tree resistance of LDPE. A new orientation setup for electrical inducement was designed to achieve MMT orientation in the LDPE/MMT composite. The effect of electrically induced orientation was characterized by X-ray diffraction, ultraviolet-visible spectroscopy, and scanning electron microscopy. The initiation and propagation properties of electrical trees in the LDPE/MMT composite before and after the electrically induced treatment were investigated and compared. Results indicate that the electric field contributes to the uniform dispersion of MMT in LDPE and causes MMT layers to shift in a direction parallel to the electric field. The LDPE/MMT composite after the electrically induced treatment showed higher capability for suppressing electrical trees under the powerfrequency field.

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“…A study on an epoxy resin-based nanocomposite material found that partial discharge (PD) magnitudes and PD numbers were lower than that for the unfilled epoxy resin [3]. Alumina (Al 2 O 3 ) nanofiller have also been shown to improve the surface discharge degradation resistance of epoxy resin [4].…”

Section: Introductionmentioning

confidence: 99%

Statistical Analysis of Partial Discharge during Electrical Tree in Silicone Rubber Nanocomposites under Elevated Temperature

Ahmad¹

2017

Properties and Applications of Polymer Dielectrics

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The electric fields at the cable accessories such as jointing and termination are not uniform due to the nonuniformity structures of the accessories. Thus, it has attracted the formation of the electrical tree inside the cable accessory that is commonly made from silicone rubber. Also, the location of the cable that is exposed to the high temperature level gives severe effect to the electrical performance of the insulation. Recently, the inclusion of nanoparticles into the cable insulation has resulted in a promising outcome by resisting the discharge phenomenon such as treeing. However, the study on partial discharge during electrical trees grown in silicone rubber nanocomposites under elevated temperature is scarce including the statistical analysis of the partial discharge mechanisms. Therefore, this chapter is aiming to analyze the statistical behaviors of partial discharge during electrical tree growth in silicone rubber nanocomposites under the effect of temperature.

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Electrical treeing and the associated PD characteristics in LDPE nanocomposites

Cited by 69 publications

References 28 publications

Electrical degradation due to treeing in nanocomposite dielectric materials with impurities

Electrical degradation due to treeing in nanocomposite dielectric materials with impurities

Electric field inducement of montmorillonite in ldpe and properties of electrical tree growing in this composite

Statistical Analysis of Partial Discharge during Electrical Tree in Silicone Rubber Nanocomposites under Elevated Temperature

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