Due to the complex working environment of marine cables, the prediction of residual insulation life of power cables has become a concern. This study mainly discusses the power cable insulation residual life prediction method considering the uncertainty of influencing factors. The aging time pointswere 0 h, 72 h, 144 h, 264 h, 432 h, 600 h, 844 h and 1152 h. Finally, the elongation at break, the dielectric loss angle of frequency domain dielectric spectrum and space charge distribution are explored. At the beginning of aging, the decline trend of elongation at break curves was gentle, from 510% to 499.6%, 480.6%, and 470.2%. The results show that the difference value of the life prediction method designed in this study is small, which can be effectively used to predict the residual life of power cable insulation.

中文翻译：

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考虑影响因素不确定性的电力电缆绝缘剩余寿命预测方法

由于船用电缆工作环境复杂，电力电缆剩余绝缘寿命的预测成为人们关注的问题。本研究主要探讨考虑影响因素不确定性的电力电缆绝缘剩余寿命预测方法。老化时间点分别为 0 h、72 h、144 h、264 h、432 h、600 h、844 h 和 1152 h。最后，探讨了断裂伸长率、频域介电谱的介电损耗角和空间电荷分布。时效初期，断裂伸长率曲线下降趋势平缓，从510%下降到499.6%、480.6%和470.2%。结果表明，本研究设计的寿命预测方法差异值较小，可有效用于预测电力电缆绝缘剩余寿命。