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Dielectric Spectroscopy as a Condition Monitoring Technique for Low-Voltage Cables: Onsite Aging Assessment and Sensitivity Analyses

Author

Listed:
  • Simone Vincenzo Suraci

    (LIMES, Department of Electrical, Electronic and Information Engineering “Guglielmo Marconi”, University of Bologna, Viale del Risorgimento, 2, 40136 Bologna, Italy)

  • Chuanyang Li

    (Department of Mechanical and Automation Engineering, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong 999077, China)

  • Davide Fabiani

    (LIMES, Department of Electrical, Electronic and Information Engineering “Guglielmo Marconi”, University of Bologna, Viale del Risorgimento, 2, 40136 Bologna, Italy)

Abstract

This work presents the development, validation, and sensitivity analyses of a portable device capable of performing high-frequency dielectric spectroscopy tests on site. After a brief introduction on the operation principle and the description of the impact of frequency on dielectric spectroscopy, the article presents the results of tests on reference samples confirming good agreement with expected values. The frequency region in which the device operates, 1–200 kHz, was chosen because of its correlation with oxidative species of polymeric compound. The sensitivity analyses were performed measuring the dielectric response of low voltage cables with different aged lengths. The outcome of these tests is twofold. On the one hand, they confirm the suitability of the technique for aging evaluation, and, on the other hand, they allow the assessment of the minimum aged length (damage ratio) which causes appreciable variations on the obtained dielectric spectrum. This quantity was found to be ~35% of the total cable length.

Suggested Citation

  • Simone Vincenzo Suraci & Chuanyang Li & Davide Fabiani, 2022. "Dielectric Spectroscopy as a Condition Monitoring Technique for Low-Voltage Cables: Onsite Aging Assessment and Sensitivity Analyses," Energies, MDPI, vol. 15(4), pages 1-15, February.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:4:p:1509-:d:752090
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    References listed on IDEAS

    as
    1. Ehtasham Mustafa & Ramy S. A. Afia & Oumaima Nouini & Zoltán Ádám Tamus, 2021. "Implementation of Non-Destructive Electrical Condition Monitoring Techniques on Low-Voltage Nuclear Cables: I. Irradiation Aging of EPR/CSPE Cables," Energies, MDPI, vol. 14(16), pages 1-16, August.
    2. E. Chiodo & G. Mazzanti, 2008. "Theoretical and practical aids for the proper selection of reliability models for power system components," International Journal of Reliability and Safety, Inderscience Enterprises Ltd, vol. 2(1/2), pages 99-128.
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