The Role of Right Interpretation of Space Charge Distribution for Optimized Design of HVDC Cables

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1 Citazione (Scopus)

Abstract

In the field of high-voltage transmission systems, different degradation phenomena affect the reliability of the employed components. In particular, under dc stress, the space charge accumulation phenomenon is believed to be the most responsible of the dielectrics lifetime reduction. To measure the accumulated space charges in flat specimens, the pulsed electro-acoustic (PEA) method is one of the most used techniques. The working principle of the PEA cell is based on the acoustic waves propagation and detection. As is well known, the acoustic waves propagating in different means are partially transmitted and partially reflected. Therefore, the piezoelectric sensor of the PEA cell is subjected to both direct and reflected waves. The latter, which are also present in the PEA cell output signal, if are not taken into account, could be easily confused as a charge accumulation. For this reason, in this paper, the acoustic waves’ behavior within the PEA cell has been simulated in order to avoid incorrect interpretation of the PEA cell output charge profiles. In this paper, compared to other works present in the literature in which only the surface charges were considered, the space charges accumulated in the insulation bulk are also considered for a complete analysis of the waves behavior during the PEA measures. The results found in this paper are very useful for cable manufacturing industries in which the choice of the dielectric materials is strongly influenced by the space charge accumulation phenomenon
Lingua originaleEnglish
pagine (da-a)7165-7174
Numero di pagine10
RivistaIEEE Transactions on Industry Applications
Volume55
Stato di pubblicazionePublished - 2019

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Charge distribution
Electric space charge
Cables
Acoustics
Acoustic waves
Acoustic wave propagation
Surface charge
Insulation
Degradation
Sensors
Electric potential
Industry

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

Cita questo

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title = "The Role of Right Interpretation of Space Charge Distribution for Optimized Design of HVDC Cables",
abstract = "In the field of high-voltage transmission systems, different degradation phenomena affect the reliability of the employed components. In particular, under dc stress, the space charge accumulation phenomenon is believed to be the most responsible of the dielectrics lifetime reduction. To measure the accumulated space charges in flat specimens, the pulsed electro-acoustic (PEA) method is one of the most used techniques. The working principle of the PEA cell is based on the acoustic waves propagation and detection. As is well known, the acoustic waves propagating in different means are partially transmitted and partially reflected. Therefore, the piezoelectric sensor of the PEA cell is subjected to both direct and reflected waves. The latter, which are also present in the PEA cell output signal, if are not taken into account, could be easily confused as a charge accumulation. For this reason, in this paper, the acoustic waves’ behavior within the PEA cell has been simulated in order to avoid incorrect interpretation of the PEA cell output charge profiles. In this paper, compared to other works present in the literature in which only the surface charges were considered, the space charges accumulated in the insulation bulk are also considered for a complete analysis of the waves behavior during the PEA measures. The results found in this paper are very useful for cable manufacturing industries in which the choice of the dielectric materials is strongly influenced by the space charge accumulation phenomenon",
author = "Guido Ala and Antonino Imburgia and {Riva Sanseverino}, Eleonora and Pietro Romano and Graziella Giglia",
year = "2019",
language = "English",
volume = "55",
pages = "7165--7174",
journal = "IEEE Transactions on Industry Applications",
issn = "0093-9994",
publisher = "Institute of Electrical and Electronics Engineers Inc.",

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AU - Ala, Guido

AU - Imburgia, Antonino

AU - Riva Sanseverino, Eleonora

AU - Romano, Pietro

AU - Giglia, Graziella

PY - 2019

Y1 - 2019

N2 - In the field of high-voltage transmission systems, different degradation phenomena affect the reliability of the employed components. In particular, under dc stress, the space charge accumulation phenomenon is believed to be the most responsible of the dielectrics lifetime reduction. To measure the accumulated space charges in flat specimens, the pulsed electro-acoustic (PEA) method is one of the most used techniques. The working principle of the PEA cell is based on the acoustic waves propagation and detection. As is well known, the acoustic waves propagating in different means are partially transmitted and partially reflected. Therefore, the piezoelectric sensor of the PEA cell is subjected to both direct and reflected waves. The latter, which are also present in the PEA cell output signal, if are not taken into account, could be easily confused as a charge accumulation. For this reason, in this paper, the acoustic waves’ behavior within the PEA cell has been simulated in order to avoid incorrect interpretation of the PEA cell output charge profiles. In this paper, compared to other works present in the literature in which only the surface charges were considered, the space charges accumulated in the insulation bulk are also considered for a complete analysis of the waves behavior during the PEA measures. The results found in this paper are very useful for cable manufacturing industries in which the choice of the dielectric materials is strongly influenced by the space charge accumulation phenomenon

AB - In the field of high-voltage transmission systems, different degradation phenomena affect the reliability of the employed components. In particular, under dc stress, the space charge accumulation phenomenon is believed to be the most responsible of the dielectrics lifetime reduction. To measure the accumulated space charges in flat specimens, the pulsed electro-acoustic (PEA) method is one of the most used techniques. The working principle of the PEA cell is based on the acoustic waves propagation and detection. As is well known, the acoustic waves propagating in different means are partially transmitted and partially reflected. Therefore, the piezoelectric sensor of the PEA cell is subjected to both direct and reflected waves. The latter, which are also present in the PEA cell output signal, if are not taken into account, could be easily confused as a charge accumulation. For this reason, in this paper, the acoustic waves’ behavior within the PEA cell has been simulated in order to avoid incorrect interpretation of the PEA cell output charge profiles. In this paper, compared to other works present in the literature in which only the surface charges were considered, the space charges accumulated in the insulation bulk are also considered for a complete analysis of the waves behavior during the PEA measures. The results found in this paper are very useful for cable manufacturing industries in which the choice of the dielectric materials is strongly influenced by the space charge accumulation phenomenon

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