대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)
- 대한전기학회 1998년도 하계학술대회 논문집 E
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- Pages.1656-1658
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- 1998
뇌격거리측정계 및 뇌방전에 의해 발생하는 전장의 스펙트럼 분석
Measurement System of a Distance from Lightning Strokes to Observatory and Spectrum Analysis of Electric Fields Radiated from Lightning Discharges
- Lee, B.H. (Inha University) ;
- Chang, S.H. (Inha University) ;
- Jeang, K.H. (Inha University) ;
- Jeon, D.K. (Seoul National Polytechnic University)
- 발행 : 1998.07.20
초록
This paper deals with a measurement system of a distance between lightning strokes and observatory station and spectrum analysis of electric fields radiated from lightning discharges. The distance measurement system, which consists of a loop type magnetic field sensor, a microphone and one chip microprocessor, is connected to a personal computer through RS232 port to acquire and process the data. This system is to use a difference of propagation velocity between an electromagnetic wave and a sonic wave produced by lightning discharge. Also, an electric field waveform and a frequency spectrum were investigated by an electric field measurement system with a hemisphere antenna and a spectrum analyzer with a biconical antenna and a log-periodic antenna, respectively. The results would be used as a basic reference to protect the power systems and electric circuits from lightning overvoltages.
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