Electrical tree characteristics with the addition of alumina in silicone rubber

Hafiz, M.; Fairus, M.; Mansor, Noor Syazwani; Jamil, Mohamad Kamarol Mohd; Mariatti, M.

doi:10.1109/icpadm.2015.7295380

Cited by 7 publications

(3 citation statements)

References 15 publications

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“…Several studies have been carried out until now which report the degradation of silicone rubber due to thermal aging. Electrical treeing is the primary cause of insulation failure and deterioration in HV cable insulators [ 5 ] . Zhou et al studied that thermal aging results in an increase in the conductive current of pure silicon rubber and a decrease in electric breakdown [ 6 ] .…”

Section: Introductionmentioning

confidence: 99%

Performance evaluation of thermally aged ATH and BN co‐doped silicone rubber nano‐micro composites for power cable applications

Vangapandu

Paul

Mishra

et al. 2022

Polymer Engineering & Sci

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Power cables are intended to operate at high temperatures over a long period which may change the performance of silicone rubber insulation used in high voltage cable accessories. Therefore, in the current study, to enhance the properties of silicone rubber, alumina try‐hydrate (ATH) and boron nitride (BN) micro and nanoparticles were added to the silicone rubber matrix. The synthesized undoped silicone rubber, silicone rubber with 40 wt% micro ATH, 7 wt% nano BN, and 10 wt% micro ATH + 5 wt% nano BN composites were thermally aged for 600 h at 180ºC. The composite properties were analyzed through electrical, thermal, and physicochemical techniques. To assess the electrical characteristics, water droplet‐initiated corona discharge studies as per IEC 60112 were conducted and leakage current, corona inception voltage, and erosion resistance were evaluated. A deep learning technique also was employed for the prediction of erosion resistance of the samples. Further, to examine the surface texture and chemical changes on the surface of the material, 3‐D microscopy and Fourier transform infrared spectroscopy (FTIR) was adopted. Finally, thermal distribution analysis was performed for all the composites by infrared thermography. The results demonstrated the suitability of nano‐micro co‐doped composites over nanocomposites and micro composites for power cable applications.

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Section: Introductionmentioning

confidence: 99%

Performance evaluation of thermally aged ATH and BN co‐doped silicone rubber nano‐micro composites for power cable applications

Vangapandu

Paul

Mishra

et al. 2022

Polymer Engineering & Sci

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“…There have also been some studies focused on the temperature dependence of tree behavior under AC or DC voltage in polymers [9,12,24,25]. However, little research on electrical trees in SIR has been conducted [9,[26][27][28], especially on the temperature dependence on high-temperature vulcanized (HTV) SIR under impulse voltage.…”

Section: Introductionmentioning

confidence: 99%

Electrical treeing behaviors in silicone rubber under an impulse voltage considering high temperature

Zhang¹,

Zhou²,

Zhang³

et al. 2018

Plasma Sci. Technol.

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In this paper, work was conducted to reveal electrical tree behaviors (initiation and propagation) of silicone rubber (SIR) under an impulse voltage with high temperature. Impulse frequencies ranging from 10 Hz to 1 kHz were applied and the temperature was controlled between 30°C and 90°C. Experimental results show that tree initiation voltage decreases with increasing pulse frequency, and the descending amplitude is different in different frequency bands. As the pulse frequency increases, more frequent partial discharges occur in the channel, increasing the tree growth rate and the final shape intensity. As for temperature, the initiation voltage decreases and the tree shape becomes denser as the temperature gets higher. Based on differential scanning calorimetry results, we believe that partial segment relaxation of SIR at high temperature leads to a decrease in the initiation voltage. However, the tree growth rate decreases with increasing temperature. Carbonization deposition in the channel under high temperature was observed under microscope and proven by Raman analysis. Different tree growth models considering tree channel characteristics are proposed. It is believed that increasing the conductivity in the tree channel restrains the partial discharge, holding back the tree growth at high temperature.

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“…Normally underground cables are exposed to the moisture and contamination which can contribute to the generation of water tree, electrical tree and finally to the cable damage. Electrical tree is one of the main causes to the cable failure in underground cable where the electrical tree initiates at the fragile point of the cable, which may cause from the sharp edge, contaminations and voids [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Effect of Alumina and Halloysite clay on Electrical tree growth in Silicone Rubber Nanocomposite

2018

JESR

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Nowadays Silicone Rubber (SiR) is recommended in high voltage cable accessories fabrication as it offers excellent electrical and mechanical properties. Electrical tree is one of the phenomenon which contributes to the main factor of SiR insulation breakdown. Recently, a new approach has been applied in order to enhance the insulation strength properties by introducing nano filler in undoped material. Thus, this paper presents the influence of nano-alumina and halloysite nanoclay on electrical tree growth in SiR at 0, 1 vol%, 2 vol% and 3 vol% concentration. The electrical tree growth was investigated at 8kVrms after tree inception voltage (TIV) within 30 minutes under room temperature. The results show reductions of electrical tree growth speed and accumulate damage (%) up to 2 vol% nano-alumina and up to 3 vol% halloysite nanoclay. Nevertheless the presence of 3 vol% nano-alumina in SiR leads to the faster electrical tree growth rate and the worst accumulate damage within 1 minute of electrical tree growth process.

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Electrical tree characteristics with the addition of alumina in silicone rubber

Cited by 7 publications

References 15 publications

Performance evaluation of thermally aged ATH and BN co‐doped silicone rubber nano‐micro composites for power cable applications

Performance evaluation of thermally aged ATH and BN co‐doped silicone rubber nano‐micro composites for power cable applications

Electrical treeing behaviors in silicone rubber under an impulse voltage considering high temperature

Effect of Alumina and Halloysite clay on Electrical tree growth in Silicone Rubber Nanocomposite

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