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

IF 1.4 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Iet Science Measurement & Technology Pub Date : 2022-03-23 DOI:10.1049/smt2.12102

Yongqiang Wang, Ziye Huang, Xiaolei Zhang, Jing Shang

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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.

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工频电压下玻璃纤维增强环氧树脂的电树形态特征

为了研究玻璃纤维排列方式对电枝晶生长形态的影响，本文在不同玻璃纤维排列方式的绝缘试样上进行了电枝晶的萌生和培养实验。实验结果表明:当电场与玻璃纤维平行时，玻璃纤维的电枝呈多分支线性生长;当电场垂直于玻璃纤维时，电枝呈现聚集生长。分析表明，当施加电场与玻璃纤维平行时，在枝晶主通道释放放电能量，电枝晶轨道上的放电将驱动电枝晶沿玻璃纤维与环氧树脂的界面区域生长。当外加电场垂直于玻璃纤维时，电枝晶放电通道内的放电强度较高。为了释放电树通道中的能量，电树轨道中的爆炸诱导电树分支沿界面区向前生长。

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来源期刊

Iet Science Measurement & Technology 工程技术-工程：电子与电气

CiteScore

4.30

自引率

7.10%

发文量

审稿时长

7.5 months

期刊介绍： IET Science, Measurement & Technology publishes papers in science, engineering and technology underpinning electronic and electrical engineering, nanotechnology and medical instrumentation.The emphasis of the journal is on theory, simulation methodologies and measurement techniques. The major themes of the journal are: - electromagnetism including electromagnetic theory, computational electromagnetics and EMC - properties and applications of dielectric, magnetic, magneto-optic, piezoelectric materials down to the nanometre scale - measurement and instrumentation including sensors, actuators, medical instrumentation, fundamentals of measurement including measurement standards, uncertainty, dissemination and calibration Applications are welcome for illustrative purposes but the novelty and originality should focus on the proposed new methods.