Study of Characteristics of Breakdown Strength and Space Charge in Epoxy/Paper Composite
Shen Wei1, Cao Wen2, Wu Kai2
1. Shaanxi Electric Power Research Institute Xi’an 710049 China; 2. State Key Lab of Electrical Insulation and Power Equipment Xi’an Jiaotong University
Xi’an 710049 China
Abstract：The space charge properties and breakdown characteristics in epoxy/paper composite are studied. The research shows that the breakdown strength of epoxy/paper composite is lower than that of pure epoxy under AC voltage. While, under DC voltage the former is higher than the latter. The reason is that adding paper into pure epoxy resin can cause hetero-polarity space charges to easily generate and gather at the interface between epoxy and paper, which will lead to higher electric field distortion of epoxy/paper composite in lower DC electric field, but a lower electric field distortion in higher DC electric field.
申巍, 曹雯, 吴锴. 环氧/纸复合材料击穿特性及空间电荷的研究[J]. 电工技术学报, 2013, 28(1): 1-6.
Shen Wei, Cao Wen, Wu Kai. Study of Characteristics of Breakdown Strength and Space Charge in Epoxy/Paper Composite. Transactions of China Electrotechnical Society, 2013, 28(1): 1-6.
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2013, Vol. 28 
