电植树
材料科学
电压
谐波
聚乙烯
直流偏压
电气工程
极性(国际关系)
高压
复合材料
局部放电
声学
物理
化学
工程类
细胞
生物化学
标识
DOI:10.1109/tasc.2021.3096483
摘要
As the insulation material of HTS DC cable, cross-linked polyethylene (XLPE) will meet the dual effects of low temperature and the harmonic superimposed DC voltage during its operation, which will change the aging process of XLPE. To solve this problem and to provide the theoretical basis for the design of HTS cable, electrical treeing process under harmonic superimposed DC voltage at 30 and -196 °C were investigated in this study. Results revealed that the treeing process under harmonic superimposed DC voltage has polarity effects, that positive DC bias voltage is easier to initial electrical tree than negative DC bias voltage. Although low temperature slows down the electrical treeing process, we still should pay more attention to the third harmonic in the daily operation of HTS cables.
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