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A New Approach to On-Line Monitoring Device for ZnO Surge Arresters 원문보기

KIEE international transactions on electrophysics and applications, v.5C no.3, 2005년, pp.131 - 137  

Lee Bok-Hee (Research Center for Next-generation High Voltage and Power Technology, School of Electrical Engineering, Inha University) ,  Gil Hyoung-Jun (Dept. of Electrical Engineering, Inha University) ,  Kang Sung-Man (Dept. of Electrical Engineering, Inha University)

Abstract ▼ AI-Helper 아이콘AI-Helper

This paper describes a new approach to the algorithm and fundamental characteristics of the device for monitoring the leakage currents flowing through zinc oxide (ZnO) surge arresters. In order to obtain a technique for a new on-line monitoring device that can be used in the deterioration diagnosis ...

주제어

#ZnO surge arrester   #Leakage currents   #Deterioration diagnosis   #On-line monitoring device   #Phase shift addition method   #Surge protective device  

AI 본문요약
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제안 방법

  • The measurement of the working voltages is expensive and not possible in actual power systems. In order to develop a technique for evaluating the deterioration of ZnO surge arresters in service, this work focuses on the computer-based on-line monitoring device that can detect the resistive leakage current flowing through ZnO surge arresters precisely. The resistive leakage current measurement is a core factor in diagnosing ZnO surge arresters.
  • The resistive leakage current measurement is a core factor in diagnosing ZnO surge arresters. The phase shift addition leakage current detection device, which can directly extract the resistive current component from the leakage current without the measurement of the voltage across the ZnO surge arrester m service, was designed and constructed. The experimental results obtained from the laboratory tests are presented.
  • To display the leakage current waveforms on PC monitor transmitted iTom the on-line monitoring system using the phase shift addition method, the program using Lab VIEW tools for analyzing the leakage currents of ZnO surge arresters was developed. The total leakage current waveform, its phase shift waveform by a one-quarter, the addition waveform of the above two waveforms, and the waveforms of resistive and capacitive currents are displayed on the user screen of the monitoring software.

이론/모형

  • 7 that the measure leakage current at the peak phase of the resultant waveform obtained by adding the phase shift current to the measured leakage current is the same as the peak value of the resistive leakage current. It may therefore be concluded that the resistive leakage current can be directly calculated from the measured leakage current using the proposed on­ line leakage current monitor based on the phase shift addition method.
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참고문헌 (12)

  1. L.M. Faulkenberry, W. Coffer, Electrical Power Distribution and Transmission, Prectice Hall, Inc. pp.189-196, 1996 

  2. S. Shirakawa, F. Endo, H. Kitajima, S. Kobayashi, K. Kurita, K. Goto, M. Sakai, 'Maintenance of surge arrester by a portable arrester leakage current detector', IEEE Trans. Vol.PD-3, No.3, pp.998-1003, 1988 

  3. W. G. carlson, Dr. T. K. Gupta, A. Sweetana, 'A procedure for estimating the life time of gapless metal oxide surge arresters for AC application', IEEE Trans. Vol.PWRD-1, No.2, 67-74, 1986 

  4. M. Matsuoka, 'Nonohmic properties of Zinc Oxide Ceramics', Japanese Journal of Applied Physics, Vol. 10, No. 6, pp.736-741, 1971 

    상세보기 crossref

  5. M. Oyama, I. Ohshima, M. Honda, 'Life performance of zinc-oxide elements under DC voltage', IEEE Trans. Vol.PAS-101, No.6, pp.1364-1368, 1982 

  6. K. Sato, Y. Takada and H. Maehama, 'Electrical Conduction of ZnO Varistors under Continuous DC Stress', Japanese Journal of Applied Physics, Vol. 19, No. 5, pp.909-915, 1980 

    상세보기 crossref

  7. C.A. Spellman, A. Haddad, 'A technique for on-line monitoring of ZnO arresters', Proc. 10th ISH, Vol.4, pp.148-151, 1997 

  8. T. Klein, W. Kohler, K. Feser, W. Schmidt, and R. Bebensee, 'A New Monitoring System for Metal Oxide Surge Arresters', Proc. 11th ISH, Paper 2. 302, 1999 

  9. J. Lundquist, L. Stenstrom, A. Schei and B. Hansen, 'New Method for Measurement of the Resistive Leakage Currents of Metal-Oxide Surge Arresters in Service', IEEE Trans. Vol.PD-5, No.4, pp.1811-1822, 1990 

  10. A. Haddad, J. Fuentes-Rosado, D. M. German, and R. T. Warwes, 'Characterisation of ZnO surge arrester elements with direct and power frequency voltages', IEE Proc., Vol.137, Pt. A, No.5, pp.269-279, 1990 

  11. Bok-Hee Lee, Sung-Man Kang, Ju-Hong Eom, Tatsuo Kawamura, 'A Monitoring Device of Leakage Currents Flowing through ZnO Surge Arresters' Japanese Journal of Applied Physics, Vol.42, Pt 1, No.4A, pp.1568-1574, 2003 

    상세보기 crossref

  12. Bok-Hee Lee and Sung-Man Kang, 'A new on-line leakage current monitoring system of ZnO Surge Arresters' Materials Science and Engineering B, accepted for publication on Dec. 2004 

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