Influence of polypropylene content in PPLP for high voltage insulation at cryogenic temperature

IF 2.1 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC
Luhan Zu , Stéphane Holé , Nicolas Lallouet , Christian-Éric Bruzek
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引用次数: 0

Abstract

This study compares the dielectric performance of polypropylene-laminated paper (PPLP) insulation impregnated with liquid nitrogen in the context of high-power superconducting cables within the SCARLET European project. Samples with polypropylene (PP) contents of 43 % and 55 % are tested in a representative cable geometry including almost 20 % gap density in the insulation. Breakdown voltage is found to increase with hydrostatic pressure. Weibull analysis predicts similar breakdown field strength at 63 % probability for both kinds of samples (about 89 kV/mm) but a larger scale parameter for 55 %-PP-content sample (about 10 versus 7). This better performance for 55 % PP content is mitigated by a larger brittleness upon breakdown.
低温高压绝缘PPLP中聚丙烯含量的影响
本研究比较了欧洲SCARLET项目大功率超导电缆中浸渍液氮的聚丙烯层压纸(PPLP)绝缘材料的介电性能。聚丙烯(PP)含量分别为43%和55%的样品在具有代表性的电缆几何形状中进行测试,其中绝缘间隙密度几乎为20%。击穿电压随着静水压力的增大而增大。威布尔分析预测两种样品的击穿场强相似,概率为63%(约89 kV/mm),但55% - pp含量的样品的尺度参数更大(约10 vs 7)。当PP含量为55%时,这种较好的性能会因破裂时较大的脆性而减弱。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Journal of Electrostatics
Journal of Electrostatics 工程技术-工程:电子与电气
CiteScore
4.00
自引率
11.10%
发文量
81
审稿时长
49 days
期刊介绍: The Journal of Electrostatics is the leading forum for publishing research findings that advance knowledge in the field of electrostatics. We invite submissions in the following areas: Electrostatic charge separation processes. Electrostatic manipulation of particles, droplets, and biological cells. Electrostatically driven or controlled fluid flow. Electrostatics in the gas phase.
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