대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)

대한전기학회 (The Korean Institute of Electrical Engineers)
권호 표지

낙뢰에 의하여 발생하는 자장의 계측과 통계적 분석

Measurement and Statistical Analysis of Magnetic Fields Produced by Lightning Return Strokes

  • 이복희 (인하대학교 전기공학과) ;
  • 박성열 (인하대학교 전기공학과)
  • Lee, Bok-Hee (Dept. of Electrical Engineering, College of Engineering, Inha University) ;
  • Park, Sung-Yeol (Dept. of Electrical Engineering, College of Engineering, Inha University)
  • 발행 : 1997.11.29
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초록

In this paper, magnetic fields produced by lightning return strokes were investigated and analyzed Magnetic field and its derivatives were measured with two crossed loop antennas. Frequency bandwidths of the magnetic field and its derivative measuring systems are in the range of $270\;[Hz]\;{\sim}\;2.3\;[MHz]$ and $450\;[Hz]\;{\sim}\;2.5\;[MHz]$, and their response sensitivity are 128 [mV/${\mu}T$] and 4.12 [mV/nT//${\mu}s$], respectively. Signals are digitized every 500 [ns], data are automatically recorded by transient signal analyzer(Nicolet Pro. 30) having the resolution of 12 - bit and the length of 5 kilowords, and they are registered at personal computer. Magnetic field and its derivative waveforms associated with lightning return strokes were observed since the summer of 1997 at Inha University in Inchon.

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