Diagnosis of cable aging by broadband impedance spectroscopy

Yoshimichi Ohki, Takayuki Yamada, Naoshi Hirai

Research output: Chapter in Book/Report/Conference proceedingConference contribution

15 Citations (Scopus)

Abstract

Since electric wires and cables play very important roles of supplying electric power and transmitting information and control signals, their degradation may cause a serious problem. In the present research, we examined the applicability of the broadband impedance spectroscopy (BIS) to monitor the degradation of cable insulation. The BIS method is to measure the magnitude and phase angle of impedance as a function of frequency in a very wide frequency range. First, cables were aged partially by heat and γ-rays. Further, a hole was drilled from the outer to inner conductors in some cables, and was filled with a NaCl solution in order to simulate a vented water tree. The difference in magnitude or phase angle of impedance before and after the aging becomes clearer by fast Fourier transform analyses, regardless of whether the aging was given by the -rays or water trees. The location of the degradation was also possible without referring to the data before the aging. These results clearly indicate that the BIS method has a potential ability to locate the degradation of cable insulation induced by various kinds of damages.

Original languageEnglish
Title of host publicationAnnual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP
Pages24-27
Number of pages4
DOIs
Publication statusPublished - 2011
Event2011 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2011 - Cancun, Mexico
Duration: 2011 Oct 162011 Oct 19

Other

Other2011 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2011
CountryMexico
CityCancun
Period11/10/1611/10/19

Fingerprint

Cables
Aging of materials
Spectroscopy
Degradation
Insulation
Electric wire
Electric cables
Water
Fast Fourier transforms

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

Cite this

Ohki, Y., Yamada, T., & Hirai, N. (2011). Diagnosis of cable aging by broadband impedance spectroscopy. In Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP (pp. 24-27). [6232587] https://doi.org/10.1109/CEIDP.2011.6232587

Diagnosis of cable aging by broadband impedance spectroscopy. / Ohki, Yoshimichi; Yamada, Takayuki; Hirai, Naoshi.

Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP. 2011. p. 24-27 6232587.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Ohki, Y, Yamada, T & Hirai, N 2011, Diagnosis of cable aging by broadband impedance spectroscopy. in Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP., 6232587, pp. 24-27, 2011 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2011, Cancun, Mexico, 11/10/16. https://doi.org/10.1109/CEIDP.2011.6232587
Ohki Y, Yamada T, Hirai N. Diagnosis of cable aging by broadband impedance spectroscopy. In Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP. 2011. p. 24-27. 6232587 https://doi.org/10.1109/CEIDP.2011.6232587
Ohki, Yoshimichi ; Yamada, Takayuki ; Hirai, Naoshi. / Diagnosis of cable aging by broadband impedance spectroscopy. Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP. 2011. pp. 24-27
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