聚丙烯层压纸直流导电性的研究

2021 International Conference on Advanced Electrical Equipment and Reliable Operation (AEERO) Pub Date : 2021-10-15 DOI:10.1109/AEERO52475.2021.9708160

G. Zhou, Hong Zheng, Hao Du, Qilong Wang, Xiangrong Chen

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引用次数: 0

摘要

直流高温超导(HTS)设备的绝缘设计需要进行直流电场分析。为此，在室温和液氮温度下测量了PPLP的电导率。测试结果表明，单个PPLP的电导率在液氮温度下为2.02 × 10-15 S/m，在室温下为2.86 × 10-15 S/m。液氮温度和室温下PPLP绝缘的阈值电场为17.5 kV/mm。当外加电场低于17.5 kV/mm时，PPLP的电导率不随电场强度的变化而变化。当外加电场大于17.5 kV/mm时，PPLP的电导率随电场强度的增大而增大。不同层的PPLP具有相同的电场阈值，但电导率不相同。

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Study on DC Conductivity Characteristics of Polypropylene Laminated Paper

DC electric field analysis should be carried out for the insulation design of dc high-temperature superconducting (HTS) equipment. For that purpose, the conductivity of PPLP was measured under room temperature and liquid-nitrogen temperature. The testing results show that the conductivity of single PPLP is 2.02 × 10-15 S/m at liquid-nitrogen temperature and 2.86 × 10-15 S/m at room temperature. The threshold electric field of PPLP insulation at liquid-nitrogen temperature and room temperature is 17.5 kV/mm. When the applied electric field is lower than 17.5 kV/mm, the conductivity of PPLP does not change with the electric field strength. When the applied electric field is higher than 17.5 kV/mm, the conductivity of PPLP increases with the electric field strength. Different layers of PPLP have the same electric field threshold, but the conductivity is not the same.

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2021 International Conference on Advanced Electrical Equipment and Reliable Operation (AEERO)

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