Abstract：With the emergence of superconductor technology,the methodology for designing and implementing HTS power devices are quickly being developed. HTS power devices are receiving considerable attention due to their high-capacity and low loss. Compared to AC HTS power devices,DC superconducting power devices have the advantage of zero impedance and have become the optimal choice among power devices. To aid in the development of DC superconducting power devices,the DC dielectric breakdown characteristics of dielectric sheets in liquid nitrogen should be better understood. In this paper,DC breakdown tests are performed for six types of sheets including Dupont NomexT410 fiber paper,Dupont NomexT418,Dupont 100HN,Dupont 100CR,Dupont 150FN019 which consist of 100HN and Teflon,and Dupont 150FCR019 which consist of 100CR and Teflon,in liquid nitrogen. The result shows that hybrid films have better DC breakdown strength,compared to non-hybrid film. At the same time,the difference of breakdown characteristic between non-hybrid films and hybrid films are analyzed.
刘志凯，李卫国，魏斌，丘明，高兴军，高超，赵勇青，李松. 液氮下杂化薄膜材料的直流击穿性能研究[J]. 电工技术学报, 2014, 29(12): 225-229.
Liu Zhikai,Li Weiguo,Wei Bin,Qiu Ming,Gao Xingjun,Gao Chao,Zhao Yongqing,Li Song. Study of Breakdown Characteristics for Hybrid Films in Liquid Nitrogen. Transactions of China Electrotechnical Society, 2014, 29(12): 225-229.
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