Residual Life Assessment of Oil-Immersed Insulating Paper by FTIR Feature Interpretability Evolution

Guangyi Liu; Yanan Liu; Chen Zhang; Jian Li; Zhengyong Huang; Feipeng Wang; Huaqiang Li; Jinghui Gao; Lisheng Zhong

doi:10.1049/hve2.70178

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Residual Life Assessment of Oil-Immersed Insulating Paper by FTIR Feature Interpretability Evolution

更新时间：2026-07-03

- Residual Life Assessment of Oil-Immersed Insulating Paper by FTIR Feature Interpretability Evolution
- High Voltage Vol. 11, Issue 3, (2026)
- 作者机构：
  
  1. State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University,Xi'an,China
  2. State Key Laboratory of Power Transmission Equipment Technology, Chongqing University,Chongqing,China
- 作者简介：
- 基金信息：
- DOI：10.1049/hve2.70178
  CLC：
- Published：2026
- 稿件说明：
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Guangyi Liu, Yanan Liu, Chen Zhang, et al. Residual Life Assessment of Oil-Immersed Insulating Paper by FTIR Feature Interpretability Evolution[J]. High Voltage, 2026, 11(3).
DOI：

Guangyi Liu, Yanan Liu, Chen Zhang, et al. Residual Life Assessment of Oil-Immersed Insulating Paper by FTIR Feature Interpretability Evolution[J]. High Voltage, 2026, 11(3). DOI： 10.1049/hve2.70178.

摘要

Abstract

The ageing of insulating paper escalates the peril of insulation failure in oil-impregnated-paper power equipment. Consequently

the real-time monitoring and non-destructive assessment of insulating paper condition assume paramount significance. This paper proposes a residual life prediction method of insulating paper based on Fourier transform infrared (FTIR) spectroscopy. The windowed wave feature (WWF) extraction method is designed and the WWF-bagging model is established to assess the tensile strength (TS) of insulating paper. Combined with the shapley additive explanations (SHAP) algorithm

we propose that kurtosis and skewness of infrared spectrum are the pivotal parameters for insulating paper life prediction. Additionally

a consistent correlation is observed between the infrared spectral band of aldehyde band and the ageing time. The experimental results evince that the proposed model surpasses classical methods evaluating the residual life of ageing insulating paper.

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