15-10-2010, 10:27 PM
Interception Probability and
Shielding Against Lightning
A comprehensive analysis on shielding against lightning is presented in this article. The design of its protection zone and collection volume is an important topic for an air terminal. The lightning interception
probability is a term which refers to the close conformity between the actual and calculated number of lightning strikes. The data shows that there is a relationship between the calculated and actual number lightning strikes. for an accurate description of lightning interception, the strike radius and it s statistical nature should be considered. an air-termination system can be
designed by implementing the simple electrogeometric model
for striking distance.
The total probability for a certain lightning stroke current is a major factor in determining the lightning striking probability. A research about shielding
against lightning is done in this paper by taking interception probability as a factor. a new simple design is proposed for the protection zone and collection volume of the air terminal. The lightning polarity and current distribution are the main factors that are taken into consideration but alongwith it, factors like struck object height and interception probability are also considered.
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