The Transactions of the Korean Institute of Electrical Engineers C (대한전기학회논문지:전기물성ㆍ응용부문C)

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지

Characteristics of Leakage Current on Transmission Insulators Contaminated Artificially with Soluble and Nonsoluble Materials

용해성물질과 비용해성물질로 인공 오손된 송전용 애자의 누설전류 특성

  • Published : 2004.09.01
Download PDF
⟨ Previous Next ⟩

Abstract

The leakage current of transmission insulators contaminated with salt, clay, and kaolin was examined in the Gochang's Long Periods Testing Center. The Insulators were artificially contaminated and estimated with the method of equivalent salt deposit density(ESDD). The artificially contaminated insulators were installed with the same condition as in the real transmission power line and applied with 154 (kV). The leakage current of the artificially contaminated insulators was measured with environment conditions, such as temperature and humidity by the a automatic leakage current detecting system. The leakage current of heavily contaminated insulator was abruptly increased above 72［%］ of humidity, even though the leakage current was similar between the contaminated and non-contaminated insulators below 72［%］ of humidity. Also, it was found that the humidity was much more important than the temperature in the leakage current of transmission insulators. The leakage current of contaminated insulator was decreased when it was plenty of rainfall, resulting from natural washing.

Keywords

References

  1. G. H. Vaillancourt, J. P. Bellerive, M. St-Jean, C. Jean, 'New live line tester for porcelain suspension insulators on high voltage power lines', IEEE transactions on power delivery, Vol. 9, No. 1, p. 208, 1994 https://doi.org/10.1109/61.277692
  2. S. Grzybowski, R. A. Wilson, A. L. Libby, R. Barbre, 'Electrical and mechanical performance of porcelain suspension insulators removed from a 230kV transmission line after 35 years of service', IEEE proceedings, p.59, 1995 https://doi.org/10.1109/SECON.1995.513057
  3. R. Matsuoka, H. Shinokubo, K. Kondo, Y. Mizuno, K. Naito, T. Fujimura, T. Terada, 'Assessment of basic contamination withstand voltage characteristics of polymer insulators', IEEE Transactions on power delivery, Vol. 11, No. 4, p. 1895, 1996 https://doi.org/10.1109/61.544273
  4. F. F. Bologna, A. C. Britten, G. Watridge, D. J. Stevens, G. Grigorakis, 'Leakage current on lightly polluted on 275kV glass disc insulator strings in conditions of light wetting', IEEE proceedings, p. 739, 1999 https://doi.org/10.1109/AFRCON.1999.821859
  5. Raji Sundararajan and Ravi Gorur, 'Influence of Inert Materials on the Pollution Flashover Voltage of Porcelain Insulators', Proceedings of IEEE Conference on Electical Insulation and Dielectric Phenomena(CEIDP' 94), 1994 https://doi.org/10.1109/CEIDP.1994.592043
  6. 심응보외 2인, '염진해 오손정도 및 기준정립에 관한 연구(최종보고서)', 한국전력공사 전력연구원, pp. 73-77, 2002
  7. I. H. Choi, et al, 'Characteristic Test on the leakage Current of Transmission Insulators', Proceeding of the KIEE Summer Annual Conference, Vol. A, p. 479, 2003
  8. I. H. Choi, J. H. Choi, D. I. Lee, G. J. Jung, J. S. Ahn, '광대역 누설전류 자동측정 장치', Korea Patent 10-2003-0074891, 2003
  9. 전영국외 6인, '전력설비의 염진해대책에 관한 연구(Ⅲ)', 한국전력공사 기술연구원 보고서, pp. 58-72, 1988