Measurement Device of Resistive Leakage Current for Arrester Deterioration Diagnosis

피뢰기 열화진단을 위한 저항분 누설전류의 측정장치

  • 길경석 (한국해양대학 전기전자공학부) ;
  • 한주섭 (한국해양대학 산업기술연구소) ;
  • 김정배 ((주)효성 중공업연구소)
  • Published : 2003.10.01


Resistive leakage current flowing ZnO blocks increases with its ages, which is an important indicator of arrester deterioration. However, a complicated circuitry is essential to measure the resistive leakage current included in the total leakage current, and the difficult handling of the measurement makes few applications to the fields. In this paper, we propose a resistive leakage current measurement device which is composed of a current detection circuit and an analysis program operated on a microprocessor. The device samples the input leakage current waveform digitally, and discriminate the zero-cross and the peak point of the waveform to analyze the current amplitude vs. phase. The capacitive leakage current is then eliminated from the total leakage current by using an algorithm to extract the resistive leakage current only. Also, the device can be operated automatically and manually to analyze the resistive leakage current even when the leakage current waveform is distorted due to various types of arrester deterioration. To estimate the performance of the device, we carried out a test on ZnO blocks and lightning arresters. From the results, it is confirmed that the device could analyze most parameters needed for the arrester diagnostics such as total leakage current. resistive leakage current, and the $3^rd$ harmonic leakage current.


  1. Robert J. Schilling, Sandra L. Harris, 'Applied Numerical Methods for Engineers Using MATLAB and C', BROOKS/COLE PUBLISHING COMPANY, 1999, pp.321-328
  2. Robert F. Coughlin, Frederick F. Driscoll, 'Operational Amplifiers and Linear Integrated Circuits', Prentice-Hall, 1987, pp.266-298
  3. L. M. Levinson, H. R. Philipp, 'The physics of metal oxide varistors', Journal of Applied Physics, Vol. 46, No.3, pp.1332-1341, 1975
  4. T. K. Gupta, 'Application of zinc oxide varistors', Journal of the American Ceramic Society, Vol.73, No.7, pp.1817-1840, 1990
  5. 길경석 외, '뇌충격전류에 의한 산화아연형 피뢰기 소자의 전기적 특성과 피뢰기 열화진단 전문가 시스템', 대한전기학회 논문지, 제51C권, 4호, pp.152-157, 2002
  6. 길경석, 한주섭, '다중뇌충격전류에 의한 산화아연형 피뢰기 소자의 전기적 특성 변화', 대한전기학회 논문지, 제49C권, 12호, pp.685-690, 2000
  7. 江藤伸夫 外, '酸化亞鉛形避雷器の漏れ電流檢出方式の提案', 日本電氣學會 電力·ェネルギ一部門大會, pp.850-851, 1994
  8. 石崎義弘 外, '避雷器の外部診斷技術', OHM, Vol.74, No.4, pp.45-50, 1987
  9. 石邊信治, '酸化亞鉛形避雷器の劣化診斷テクニック', 電氣計算, Vol.44, No.3, pp.56-60, 1987
  10. 宇治田克 外, '酸化亞鉛形避雷器用漏れ電流檢出器', 三菱電機技報, Vol.55, No.3, pp.228-231, 1981
  11. J.Lundquist et al., 'New method for measurement of the resistive leakage currents of metal-oxide surge arrester in service', IEEE Transactions on Power Delivery, Vol.5, No.3, pp.1811-1822, 1990
  12. S.Shirakawa et al., 'Maintenance of surge arrester by portable arrester leakage current detector', IEEE Transactions on Power Delivery, Vol.3, No.3, pp.998-1003, 1988
  13. J.J.Burke, 'Application of mov gapped arrester on noneffectively grounded distribution systems', IEEE Transactions on Power Delivery, Vol.6, No.2, pp.794-800, 1991
  14. J.R.Ribeiro, M.E.McCallum, 'An application of metal oxide arresters in the elimination of need for closing resistors in EHV breakers', IEEE Transactions on Power Delivery, Vol.4, No.1, pp.282-291, 1989