Browse > Article
http://dx.doi.org/10.4313/JKEM.2019.32.2.122

Damage Evaluation of Porcelain Insulators Using the Frequency Response Function  

Choi, In-Hyuk (KEPCO Research Institute)
Son, Ju-Am (KEPCO Research Institute)
Oh, Tae-Keun (Department of Safety Engineering, Incheon National University)
Yoon, Young-Geun (Department of Safety Engineering, Incheon National University)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.32, no.2, 2019 , pp. 122-128 More about this Journal
Abstract
Porcelain insulators have been used mainly for power line fixing and electrical insulation in transmission towers. Porcelain insulators have generally a 30 years desired life, but over 50% exceed their life expectancy. Since the damage to porcelain insulators is usually accompanied by enormous loss of human resource material, their efficient maintenance has emerged as an important issue. In this regard, this study applied a frequency response function (FRF) for integrity assessment of the insulator. The characteristics of the FRF according to damage types were identified and analyzed by the change in natural frequencies, curve shape, attenuation, and Nyquist diagram stability. The results showed significant differences in the FRF according to damage types, which can be used as basic data for the effective integrity assessment of porcelain insulators.
Keywords
Porcelain insulator; Frequency response function; Curve shape; Attenuation; Nyquist diagram stability;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 J.S.T. Looms, Insulators for High Voltages (IET, United Kingdom, 1988) p. 1.
2 I. H. Choi, T. K. Kim, Y. B. Yoon, J. Yi, and S. W. Kim, J. Korean Inst. Electr. Electron. Mater. Eng., 30, 551 (2017). [DOI: https://doi.org/10.4313/JKEM.2017.30.9.551]   DOI
3 I. H. Choi, J. Y. Park, and D. H. Gang, J. Electric Power and Energy, 2, 365 (2016). [DOI: https://doi.org/10.18770/KEPCO.2016.02.03.365]   DOI
4 S. D. Jeon, J. M. Oh, F. I. Kim, K. W. Jeong, H. Y. Ryu, and B. H. Lee, Trans. Korean. Inst. Elect. Eng., 58, 336 (2009).
5 J. Y. Park, J. K. Lee, and K. Y. Oh, Trans. Korean. Inst. Elect. Eng., 60, 1239 (2011). [DOI: https://doi.org/10.5370/KIEE.2011.60.6.1239]   DOI
6 J. M. Joung, D. M. Kim, and M. H. Choi, Trans. Korean. Inst. Elect. Eng., 60, 267 (2011). [DOI: https://doi.org/10.5370/KIEEP.2011.60.4.267]   DOI
7 C. D. Lee and D. H. Yeo, Trans. Korean Soc. Auto. Eng., 19, 139 (2011).
8 M. G. Jeong, K. S. Kim, and K. J. Kim, Trans. Korean Soc. Noise Vib. Eng., 16, 619 (2006). [DOI: https://doi.org/10.5050/KSNVN.2006.16.6.619]   DOI
9 J. S. Bendat and A. G. Piersol, Random Data Analysis and Measurement Procedures (John Wiley & Sons, Inc, Canada, 2010) p. 25.
10 W. J. Bottega, Engineering Vibrations (Taylor & Francis, New York, 2006) p. 109.
11 P. Stoica, Introduction to Spectral Analysis (Prentice Hall, Michigan, 1997) p. 52.