Deterioration diagnosis technique of housing rubber for composite hollow insulators

Author

Suzuki, A. ; Kumai, T. ; Shinoda, A. ; Hidaka, M. ; Kishida, R. ; Toshima, N. ; Koshino, Y. ; Sakanishi, K. ; Utsumi, Y.

Author_Institution

Chubu Electr. Power Co. Inc., Nagoya, Japan

Volume

1

fYear

2003

fDate

1-5 June 2003

Firstpage

405

Abstract

A field test and an accelerated aging test with composite hollow insulators were conducted to evaluate long-term reliability and predict longevity. An 84 kV gas circuit breaker with composite hollow insulators was subjected to field test at Chita substation, Chubu Electric Power Company in 1996. This field test is scheduled for completion in 2004. An accelerated aging test with a small composite hollow insulators was conducted for up to 5,000 hours with the conditions specified in IEC 61109 Annex-C. Appearances, hydrophobicity, and surface deterioration were periodically analyzed. It was found that green algae deposited on the surface of some portions of the housing rubber of field test specimens, but was not associated with significant deterioration. Erosion developed on the housing of the specimens subjected to the accelerated aging test for 4,000 hours, and 5,000 hours. The number of eroded traces increased with time. Slight deterioration was found even on the areas without erosion analyzed by Fourier Transform Infra-red Ray spectroscopy.

Keywords

Fourier transform spectra; ageing; composite insulating materials; composite insulators; hardness; infrared spectra; leakage currents; reliability; rubber; 4000 hour; 5000 hour; 84 kV; Fourier transform infrared spectra; aging test; composite hollow insulators; deterioration diagnosis; eroded traces; erosion; field test; gas circuit breaker; hardness; leakage currents; reliability; rubber; Accelerated aging; Algae; Circuit breakers; Circuit testing; Dielectrics and electrical insulation; Gas insulation; IEC standards; Insulator testing; Rubber; Substations;

fLanguage

English

Publisher

ieee

Conference_Titel

Properties and Applications of Dielectric Materials, 2003. Proceedings of the 7th International Conference on

ISSN

1081-7735

Print_ISBN

0-7803-7725-7

Type

conf

DOI

10.1109/ICPADM.2003.1218437

Filename

1218437