지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2014.10
- 수록면
- 82 - 88 (7page)
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초록· 키워드
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This paper presents the results of model tests for the attachment process of lightning leader to ground which is one of poorly understood processes of cloud-to-ground lightning discharges. In order to simulate the attachment process of lightning leader to ground, we investigated the discharge characteristics of air gap between the tip of needle-shaped electrode and the soil surface as a parameter of moisture content in soils when the positive and negative 1.2/50㎲ lightning impulse voltages are applied. The breakdown voltage and the discharge light were observed. As a result, the attachment processes of lightning leader to ground are strongly dependent on the grain size and the moisture content of soils. The time to breakdown was shortened with increasing the magnitude of incident impulse voltages. The delay time from application of the highest voltage to breakdown in sand is shortened with increasing the moisture content. The delay time from application of the voltage to breakdown in gravel varied from about 0.5㎲ to several ㎲. As the moisture content in soil increases, the breakdown voltages are decreased and the breakdown voltage versus time to breakdown curves are shifted toward the lower side. The results obtained in this work are similar to those for non-uniform air gap stressed by lightning impulse voltages.
목차
Abstract
1. 서론
2. 실험장치 및 방법
3. 결과 및 고찰
4. 결론
References
참고문헌 (14)
참고문헌 신청
1. [기타자료] - B. H. Lee / 2004 / Protection of Information and Communication Facilities against Lightning / Department of publication of Inha University : 20 ~ 25
2. [단행본] - M. A. Uman / 2001 / The Lightning Discharge / Dover Publications, Inc
3. [단행본] - V. A. Rakov / 2003 / Lightning – Physics and Effects / Cambridge University Press : 137 ~ 143
4. [보고서] - A. Phillip / 2006 / Guide for Transmission Line Grounding: A Roadmap for Design, Testing and Remediation; Part 1-Theory Book
5. [학술대회논문] - I. F. Genos / 2004 / Soil Ionization under Lightning Impulse Voltage / IEE Proc-Sci 151 : 343 ~ 346
2. [단행본] - M. A. Uman / 2001 / The Lightning Discharge / Dover Publications, Inc
3. [단행본] - V. A. Rakov / 2003 / Lightning – Physics and Effects / Cambridge University Press : 137 ~ 143
4. [보고서] - A. Phillip / 2006 / Guide for Transmission Line Grounding: A Roadmap for Design, Testing and Remediation; Part 1-Theory Book
5. [학술대회논문] - I. F. Genos / 2004 / Soil Ionization under Lightning Impulse Voltage / IEE Proc-Sci 151 : 343 ~ 346
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