Research on breakdown characteristics of oil-paper insulation in compound field at different temperatures

2nd International Conference on New Material and Chemical Industry

材料科学;化学工业

Li, L.^1 ; Chen, M.Y.^2 ; Zhu, X.C.^1 ; Gao, Z.W.^1 ; Zhang, H.D.^1 ; Li, G.X.^1 ; Zhang, J.^1 ; Yu, C.L.^1 ; Feng, Y.M.^2

State Grid Heilongjiang Electric Power Company Limited, Electric Power Research Institute, Harbin

150030, China^1

State Grid Heilongjiang Electric Power Company Limited, Harbin

150090, China^2

关键词: Ac and dc;    Breakdown characteristics;    Breakdown mechanism;    Dielectric strengths;    High temperature;    Low temperatures;    Oil paper insulation;    Oil-papers;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/292/1/012007/pdf
DOI  :  10.1088/1757-899X/292/1/012007

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The breakdown characteristics of oil-paper insulation in AC, DC and compound field at different temperatures were studied. The breakdown mechanism of oil-paper insulation at different temperatures and in AC and DC electric fields was analyzed. The breakdown characteristic mechanisms of the oil-paper insulation in the compound field at different temperatures were obtained: The dielectric strength of oil-paper compound insulation is changed gradually from dependence on oil dielectric strength to dependence on paperboard dielectric strength at low temperature. The dielectric strength of oil-paper compound insulation is always related to the oil dielectric strength closely at high temperature with decrease of AC content.