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Reliability of PEA Measurement in Presence of an Air Void Defect

Author

Listed:
  • Antonino Imburgia

    (L.E.PR.E. HV Laboratory, Dipartimento di Ingegneria, Università di Palermo, Viale delle Scienze, Edificio 9, 90128 Palermo, Italy)

  • Pietro Romano

    (L.E.PR.E. HV Laboratory, Dipartimento di Ingegneria, Università di Palermo, Viale delle Scienze, Edificio 9, 90128 Palermo, Italy)

  • Giuseppe Rizzo

    (L.E.PR.E. HV Laboratory, Dipartimento di Ingegneria, Università di Palermo, Viale delle Scienze, Edificio 9, 90128 Palermo, Italy)

  • Fabio Viola

    (L.E.PR.E. HV Laboratory, Dipartimento di Ingegneria, Università di Palermo, Viale delle Scienze, Edificio 9, 90128 Palermo, Italy)

  • Guido Ala

    (L.E.PR.E. HV Laboratory, Dipartimento di Ingegneria, Università di Palermo, Viale delle Scienze, Edificio 9, 90128 Palermo, Italy)

  • George Chen

    (The Tony Davies High Voltage Laboratory, University of Southampton, Southampton SO17 1BJ, UK)

Abstract

This paper deals with the reliability of the Pulsed Electro-Acoustic (PEA) technique in the case of a specimen containing an air layer. The first approach to this study has been proposed by the authors in previously published works. In these papers, the mathematical description, the PEA cell simulation model, and some experimental tests have been reported. In this work, a more accurate description of the acoustic wave behavior within the PEA cell and specimen with and without an air layer is given. Moreover, the comparison between simulation and experimental tests for both cases (specimen with and without air layer) allowed the validation of the previously developed PEA cell simulation model. The latter was previously validated only for a single layer specimen, here the good performances of the model have also been confirmed in the case of a multilayer specimen, also with an air layer. Experimental and simulation results show that the air layer acts as a barrier for the acoustic signal, due to the different acoustic impedance between the air and the solid dielectric material which constitute the specimen. Therefore, the aim of the present work is to demonstrate that in the case of a three-layers specimen, composed as dielectric-air-dielectric, the PEA cell is not able to provide the complete profile of the entire specimen under test.

Suggested Citation

  • Antonino Imburgia & Pietro Romano & Giuseppe Rizzo & Fabio Viola & Guido Ala & George Chen, 2020. "Reliability of PEA Measurement in Presence of an Air Void Defect," Energies, MDPI, vol. 13(21), pages 1-14, October.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:21:p:5652-:d:436556
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    References listed on IDEAS

    as
    1. Runhao Zou & Jian Hao & Ruijin Liao, 2019. "Space/Interface Charge Analysis of the Multi-Layer Oil Gap and Oil Impregnated Pressboard Under the Electrical-Thermal Combined Stress," Energies, MDPI, vol. 12(6), pages 1-18, March.
    2. Antonino Imburgia & Pietro Romano & George Chen & Giuseppe Rizzo & Eleonora Riva Sanseverino & Fabio Viola & Guido Ala, 2019. "The Industrial Applicability of PEA Space Charge Measurements, for Performance Optimization of HVDC Power Cables," Energies, MDPI, vol. 12(21), pages 1-13, November.
    3. Giuseppe Rizzo & Pietro Romano & Antonino Imburgia & Guido Ala, 2019. "Review of the PEA Method for Space Charge Measurements on HVDC Cables and Mini-Cables," Energies, MDPI, vol. 12(18), pages 1-23, September.
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    Cited by:

    1. Antonino Imburgia & Giuseppe Rizzo & Pietro Romano & Guido Ala & Roberto Candela, 2022. "Time Evolution of Partial Discharges in a Dielectric Subjected to the DC Periodic Voltage," Energies, MDPI, vol. 15(6), pages 1-14, March.
    2. Marek Florkowski & Maciej Kuniewski, 2023. "Analysis of Space Charge Signal Spatial Resolution Determined with PEA Method in Flat Samples including Attenuation Effects," Energies, MDPI, vol. 16(8), pages 1-16, April.
    3. Marek Florkowski & Maciej Kuniewski, 2023. "Partial Discharge-Originated Deterioration of Insulating Material Investigated by Surface-Resistance and Potential Mapping," Energies, MDPI, vol. 16(16), pages 1-17, August.

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