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Nayel, M. (2009). STUDY OF AIR TERMINALS SHIELDING DUE TO LIGHTNING LEADER SLANT. JES. Journal of Engineering Sciences, 37(No 1), 125-134. doi: 10.21608/jesaun.2009.121028
M. Nayel. "STUDY OF AIR TERMINALS SHIELDING DUE TO LIGHTNING LEADER SLANT". JES. Journal of Engineering Sciences, 37, No 1, 2009, 125-134. doi: 10.21608/jesaun.2009.121028
Nayel, M. (2009). 'STUDY OF AIR TERMINALS SHIELDING DUE TO LIGHTNING LEADER SLANT', JES. Journal of Engineering Sciences, 37(No 1), pp. 125-134. doi: 10.21608/jesaun.2009.121028
Nayel, M. STUDY OF AIR TERMINALS SHIELDING DUE TO LIGHTNING LEADER SLANT. JES. Journal of Engineering Sciences, 2009; 37(No 1): 125-134. doi: 10.21608/jesaun.2009.121028

STUDY OF AIR TERMINALS SHIELDING DUE TO LIGHTNING LEADER SLANT

Article 7, Volume 37, No 1, January and February 2009, Page 125-134  XML PDF (482.4 K)
Document Type: Research Paper
DOI: 10.21608/jesaun.2009.121028
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Author
M. Nayel
Assiut University, Egypt
Abstract
This paper studies the effect of the lightning leader slant on the shielding angle of the air terminal. The lightning leader is modeled by using discrete line charges. The Rizk voltage condition is assumed as the upward lightning leader condition which is the lightning stroke condition to the lightning rod. The attractive radius and the shielding angle of the air terminal are calculated for different air terminal heights, different lightning currents and different lightning leader slopes. The calculated results show that the attractive radius of air terminal depends on the rod height, the lightning current and the lightning leader slope. A formula related between the lightning current, the lightning leader slope, the attractive radius and the air terminal height is proposed. The slant of lightning leader decreases the air terminal shielding angle, especially at low lightning current and long air terminal.
Keywords
Lightning; Air Terminal; Attractive Radius; Shielding Angle; Shielding Failure
Main Subjects
Electrical Engineering, Computer Engineering and Electrical power and machines engineering.
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