Journal of Electrical Engineering & Technology

, Volume 14, Issue 1, pp 323–330 | Cite as

Study on Electrical Aging Characteristics of Fiber Sheath Materials in Power Transformer Oil

  • Lu Sun
  • Xiaozhou Fan
  • Shuo JiangEmail author
  • Bowen Wang
  • Yunpeng Liu
  • Shuguo Gao
  • Lingming Meng
Original Article


Optical fiber has great potential in the development of online monitoring for trans-formers. In this paper, the electrical aging test of fiber sheath material based on a gradual voltage-rising method was performed and the influence of thermal aging on electrical aging was determined. Compared to the oil-paper insulation performance of traditional transformers, it was found that ethylene tetrafluoroethylene (ETFE), polytetrafluoroethylene (PTFE) and Polyamide 12 (PA 12) were better than oil-paper. Statistical analysis of the ETFE material and oil-paper test data was conducted using double-parameter Weibull distribution. The inverse power and exponential functions were used to fit the experimental data and voltage tolerance coefficients of the ETFE material were obtained. Experimental results show the parameters of the ETFE model in the inverse power function and exponential function model are better than those of the oil paper insulation, and the sheathed fiber is ETFE that can be stably operated in the transformer.


Fiber sheath Electrical aging Lifetime model 



This work was supported by the Science and Technology Project of State Grid Corporation of China (5204BB1600CQ), the Fundamental Research Funds for the Central Universities (2016XS93) and the National Natural Science Foundation of China (51407074).


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Copyright information

© The Korean Institute of Electrical Engineers 2019

Authors and Affiliations

  • Lu Sun
    • 1
  • Xiaozhou Fan
    • 2
  • Shuo Jiang
    • 2
    Email author
  • Bowen Wang
    • 2
  • Yunpeng Liu
    • 2
  • Shuguo Gao
    • 1
  • Lingming Meng
    • 1
  1. 1.Hebei Electric Power Research Institute, State Grid Corporation of ChinaShijiazhuangChina
  2. 2.State Key Laboratory of New Energy and Electric Power SystemsNorth China Electric Power UniversityBaodingChina

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