Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Design and Fabrication of a Wideband Ground Impedance Meter

광대역 접지임피던스 측정기의 설계 및 제작

  • Kil, Gyung-Suk (Division of Electrical and Electronics Engineering, Korea Maritime University) ;
  • Park, Dae-Won (Division of Electrical and Electronics Engineering, Korea Maritime University) ;
  • Jang, Un-Yong (Division of Electrical and Electronics Engineering, Korea Maritime University) ;
  • Han, Ju-Seop (Research Institute of Industrial Technology, Korea Maritime University) ;
  • Gil, Hyoung-Jun (Electrical Safety Research Institute, Korea Electrical Safety Corporation)
  • 길경석 (한국해양대학교 전기전자공학부) ;
  • 박대원 (한국해양대학교 전기전자공학부) ;
  • 장운용 (한국해양대학교 전기전자공학부) ;
  • 한주섭 (한국해양대학교 부설산업기술연구소) ;
  • 길형준 (한국전기안전공사 전기안전연구원)
  • Received : 2010.05.07
  • Accepted : 2010.09.07
  • Published : 2010.10.01
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Abstract

The basic performance of the ground system is evaluated as the ground resistance by applying low frequency current below 1 kHz. However, characteristics of the ground system should be analyzed by high frequency current up to 1 MHz since transient currents having a few hundred kHz component flow during a line-to-ground fault and/or a lightning strike. This paper deals with the design and fabrication of a wideband ground impedance meter (WGIM) which measures the impedance of ground systems in ranges from 65 Hz to 1.28 MHz. Also, a noise elimination algorithm using a digital bandpass filter is proposed. The maximum error of the WGIM is 4.91% in the measurement frequency range.

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References

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