Evaluation of the deterioration degree of insulators for breakers using chemical analysis and the Mahalanobis-Taguchi (MT) method

Shinsuke Miki, Hiroshi Okazawa, Hiroshi Inujima

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

We have developed a novel evaluation technique of the deterioration degree of insulators for breakers using a chemical analysis and the Mahalanobis-Taguchi (MT) method. It is possible to evaluate the deterioration degree with great accuracy and nondestructively on-site by this technique without the effect of humidity and external noise such as electromagnetic wave. The mechanism of insulator's surface resistivity reduction was clarified, and it was found that the deterioration degree of insulators could be evaluated by this technique because a linear relationship existed between the results judged by the MT method and the actual measurement results for surface resistivity. In comparison to electrical methods such as partial electric discharge and megohmmeters, the evaluation accuracy has been improved by three digits and the range of the deterioration degree that could be evaluated was expanded by seven digits.

Original languageEnglish
JournalIEEJ Transactions on Power and Energy
Volume127
Issue number9
DOIs
Publication statusPublished - 2007

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Taguchi methods
Deterioration
Chemical analysis
Electric discharges
Electromagnetic waves
Atmospheric humidity

Keywords

  • Breakers
  • Chemical analysis
  • Evaluation of deterioration degree
  • Insulators
  • Mahalanobis-Taguchi method

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Energy Engineering and Power Technology

Cite this

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AU - Okazawa, Hiroshi

AU - Inujima, Hiroshi

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AB - We have developed a novel evaluation technique of the deterioration degree of insulators for breakers using a chemical analysis and the Mahalanobis-Taguchi (MT) method. It is possible to evaluate the deterioration degree with great accuracy and nondestructively on-site by this technique without the effect of humidity and external noise such as electromagnetic wave. The mechanism of insulator's surface resistivity reduction was clarified, and it was found that the deterioration degree of insulators could be evaluated by this technique because a linear relationship existed between the results judged by the MT method and the actual measurement results for surface resistivity. In comparison to electrical methods such as partial electric discharge and megohmmeters, the evaluation accuracy has been improved by three digits and the range of the deterioration degree that could be evaluated was expanded by seven digits.

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