SiC/环氧树脂复合材料的非线性电导率和表面电荷衰减特性

2022 4th International Conference on Electrical Engineering and Control Technologies (CEECT) Pub Date : 2022-12-01 DOI:10.1109/CEECT55960.2022.10030709

Hongda Yang, Shiyu Chen, Zhong-Yuan Li, Heqian Liu, Weinan Gao, H. Jia

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引用次数: 0

摘要

气体绝缘开关设备的绝缘子采用环氧树脂浇铸而成。在直流电压下，表面电荷积累会引起电场畸变甚至表面闪络。研究了不同质量分数的碳化硅对环氧树脂直流电导和表面电荷的影响。结果表明，当SIC含量超过10%时，环氧树脂复合材料的电导率在高场下呈非线性变化。随着SiC含量的增加，引入了更多的浅阱，有利于表面电荷的耗散。

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Nonlinear Conductivity and Surface Charge Decay Characteristics of SiC/Epoxy Resin Composites

The insulator of the gas insulated switchgear (GIS) is casted with epoxy resin. Under DC voltage, surface area charge accumulation will cause electric field distortion even surface flashover. The effects of different mass fractions of silicon carbide (SiC) on DC conductance and surface charge of epoxy resin were studied. The results show that the conductivity of epoxy resin composites is nonlinear at high field when the content of SIC exceeds 10%. With the increase of SiC content, more shallow traps are introduced, which is conducive to the dissipation of surface charge.

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2022 4th International Conference on Electrical Engineering and Control Technologies (CEECT)

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