뇌격전압에 의한 수분함유량에 따른 토양의 방전특성

초록

This paper describes experimental results about discharging characteristics of air gap between the tip of metal electrode and sand surface as a function of moisture content when 1.2/50 ㎲ lightning impulse voltage are applied. As a result, the time to breakdown was shortened with increasing the incident impulse voltages. As the moisture content increases, the time to discharge threshold is proportionally reduced. Also the discharge voltage – time curves shift toward the lower side as the moisture content increases.