DOI QR코드

DOI QR Code

A Study on the Deterioration Process of 22kV Power Cables in Operation

운전 중인 상태에 있는 22kV 전송선로 케이블의 열화 과정해석에 대한 연구

  • Received : 2013.05.02
  • Accepted : 2013.06.14
  • Published : 2013.06.30

Abstract

As an essential part of current industrial society, electric power energy is contantaly increasing in pace with the development of science and technology. In order to meet the demand of electric power, power facilities which take care of the higher voltage and bigger capacity is required. To produce and supply electric power on a sound basis the electric facilities should operate with reliability. To prevent disasters in advance, the high quality facilities should be manufactured, and a constant management should be done. When the power facilities cause accidents, the result is huge national deficits. Since the power facilities play a pivotal role in the key industry of national infrastructures of they should operate for a long time in maintaining a stable state, and the accidents can be prevented in advance. The lifetime of a power cable is considered to be 30 years at the time of manufacture, but in real fields, accidents of cable occur 8-12 years from the start of operation, resulting in a heavy loss of properties. In this paper, we will show that we have found out the cause and process of the deterioration of 22kV cable systems in operation. The result is that the process of deterioration does not follow the Weibull distribution only ; but rather, after the heat deterioration the Weibull distributed deterioration comes, then the cable is destroyed due to the partial discharge resulting from the Weibull distributed deterioration.

산업사회의 발전에 필수적인 요소 중의 하나로서, 전력 에너지의 수요는 과학 기술의 발전에 따라 꾸준히 증가해오고 있다. 전력의 수요에 부응하기 위해, 고전압과 대용량을 감당할 전력설비기 필요하다. 튼튼한 바탕 위에서 전력을 생산 공급하기 위해서는 전기 시설은 신뢰성 있게 운전해야 한다. 전력 설비가 사고를 일으킬 경우 막대한 국가적 손실을 초래하게 된다. 국가 기간 산업 시설의 중추적인 기능을 하고 있는 전력 설비는 가능한 안정된 상태를 유지하면서 오랜 기간 동안 운전할 수 있어야 하며, 사고를 미리 예방할 수 있어야 한다. 전력을 전달하기 위한 수단으로서 사용되고 있는 케이블 설계 시 수명을 약 30년으로 간주하지만, 많은 경우의 실제 현장에서는 8~12년 정도에서 파괴 현상이 발생하여 재산상의 큰 피해를 초래한다. 본 논문은 운전 중 22kV 케이블 시스템의 열화 과정에 대한 연구를 통하여 열화의 원인을 파악하였으며, 와이블 분포만 따르는 것이 아니라 열열화 후 와이블 열화를 거쳐 부분 방전에 의하여 케이블이 파괴되는 것을 확인 할 수 있었다.

Keywords

References

  1. http://www.dsecable.co.kr/cgi/view.php?&bbs_id= bd03&page=&doc_num=4
  2. D. H. Na, D. H. Ryu, "Developing of Time Information Broadcasting System Using Power Line Communication", Journal of the The Institute of Internet, Broadcasting and Communicatuin, vol. 12, no. 1, pp. 217-223, Feb 2012
  3. G. Hoff and H. G. Kranz, "Condition Base Maintenance of PE/XLPE-Insulated Mediy m Voltage Cable Network-Verification of the IRC-Analysis to Determine the Cable Age", Conference Record of the IEEE Intrenational Symp. on Electrical Insulation, pp. 53-56, 2002
  4. K. W. Lee, B. K. Kim. Y. S. Mok, K. H. Um, K. J. Lee, D. H. Park, "A Study on the Deterioration Process of 22 kV High-voltage Cables and Evaluating the Remaining Life of Cables in Operation", Fall Conference, KIEE, 2012
  5. H. Danaka, "Techniques of Equipment Diagnosis", Electricity Publishing Co. Japan, pp.197-218, 1985.
  6. S. Yamaguchi, S. Soda, N. Takada, "Development of a new type insulation diagnostic method for hot-line XLPE cables", IEEE Trans. on Power Delivery, pp. 1513-1520, 1989
  7. J. B. Lee , D. H.Park, C. B. Park , S. G. Park , S, J. Kim, "Investigation on Diagnosis of Insulation Deterioration in Live-Line Distribution Power Cable in KOREA", Proc. of the 1992 Korea-Japan Joint Conference on Electrical and Electronic Materials (Cheongju, Korea), May 28-29, KIEEME, 1992
  8. P. Cichecki, E. Gulski, J. J. Smit, F. Vries, "Measurements of dielectric losses on paper-oil insulation samples of service aged HV Power cables", Proc. of the 16th Int. Sympo. on high Voltage Engineering, Paper A-34, (Cape Town, South Africa), Aug. 24-28, 2009
  9. http://www.openelectrical.org/wiki/index.php?title=Insulation_Resistance_Test
  10. K. W. Lee, Y. S. Mok, B. K. Kim, J. B. Lee, and D. H. Park, "A Study on Remain life with Aging in 22kV CV Cable", Conference on Physical Properties and Applications in Electricity, KIEE,pp.19-21, 2003
  11. K. W. Lee, K. H. Um, D. H. Park, "A Study on Evaluating the Life Exponent in Voltage Deterioration of 22 kV High-voltage Cables in Operation". 2012 Summer Conference, KIEE (Jeongsun, Korea)
  12. http://grouper.ieee.org/groups/transformers/ subcommittees/standardsc/WG_C57.152/S10-6.2.6 % 20Insulation%20Resistance% 2020100501_Varghes.pdf
  13. http://m.lscns.com/catalogs/Railway_Railway_EN_091111.pdf
  14. Levine, R.D.Molecular Reaction Dynamics, Cambridge University Press (2005)
  15. J. S. Kim, "An Energy Saving Method using Hierarchical Filtering in Sensor Networks," Journal of the The Korea Academia-Industrial cooperation Society, vol. 8, no. 4, pp. 768-774, Aug 2007
  16. S. G. Kim, "Detection of the Retinal Optic Disk Using Automatic Inpainting Processing and Active Contour Model," Journal of Korean Institute of Information Technology, vol. 5, issue 3, pp. 68-75, Sep 2007
  17. S. H. Lee, H. J. Chung, "A Study on Life Time Estimation of TFT-LCD Module", Conference Proceeding of the Korean Institute of Information Technology, pp 46-50, July 2007
  18. J. H. Kim, D. G. Park, H, K. Han, "A Study on Selection of Distribution Function for Reliability Prediction Using Accelerated Life Test Data," Journal of the The Korea Academia-Industrial cooperation Society, vol. 7, no. 3, pp. 393-397, Mar 2006
  19. Clifton A. Ericson II, "Concise Encyclopedia of System Safety: Definition of Terms and Concepts", John Wiley & Sonc Inc., 2011 ISBN= 978-0-470-92975-9

Cited by

  1. Analysis on Driving Performance of Linear Induction Motor for Maglev System by Finite Element Method vol.15, pp.7, 2014, https://doi.org/10.5762/KAIS.2014.15.7.4469
  2. Developing Equipment to Detect the Deterioration Status of 6.6kV Power Cables in Operation at Power Station vol.14, pp.4, 2014, https://doi.org/10.7236/JIIBC.2014.14.4.197
  3. Development of Equipment to Measure Insulation Resistance and Evaluate the Lifetime of High-voltage Cable in Operation vol.14, pp.5, 2014, https://doi.org/10.7236/JIIBC.2014.14.5.237
  4. Analysis of Deterioration Characteristics by Filtering Processes at 6.6kV Power Cable Systems in Operation vol.14, pp.4, 2014, https://doi.org/10.7236/JIIBC.2014.14.4.205
  5. A Study on Cable Lifetime Evaluation Based on Characteristic Analysis of Insulation Resistance by Acceleration Factor of the Arrhenius Equation vol.14, pp.5, 2014, https://doi.org/10.7236/JIIBC.2014.14.5.231