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Results on numerical simulation (NS) of lightning current distribution in components of round standing seam cladding structure are presented. NS was performed by using 3D models of two types: large-scale model (#1), better reproducing conditions for current distribution in natural cladding; small model (#2), reproducing the sample for laboratory tests. Analysis included cases related to injection...
Electrodynamic (ED) forces influencing upon lightning protection (LP) components in some typical LP system configurations and conditions are studied. These include: various angles between conductors, their finite lengths, round and flat bar cross-section, grid of conductors, various heights of conductor holders, placement of conductors above metallic cladding and reinforced concrete, various materials,...
Present study considers distribution of currents and magnetic field in frame-type lightning protection systems (LPS). Influence of equipotentialization ring conductor (ERC) connecting vertical down-conductors at the ground level, as recommended by some normative documents, upon current distribution between mentioned conductors and magnetic field (MF) inside structures is numerically simulated. Analysis...
On the basis of probability statistical distribution of negative lightning return stroke current amplitudes (I) related to events occurred from cloud to ground (or short structures) and using electrogeometric model (EGM), the statistical distributions of currents are recalculated and number of strikes are estimated for the structures of different configurations considering their geometrical shape...
Characteristics of lightning occurred at four selected tall structures (heights of 316 to 629 m) and in surrounding areas to ground (for four distance ranges within radius R = 20 km) are determined on the basis of data collected by the North American Lightning Detection Network during 10 years (2000–2009). Two structures are freestanding (CN Tower and Inco Superstack, SS) and two are guyed (CIII TV...
An analysis of Canadian Lightning Detection Network (CLDN) data recorded during years 2004 – 2006 is performed for two selected areas in Canada within a 20-km radius around two tall structures: the CN Tower (CNT, 553 m) in Toronto and the Superstack (SS, 380 m) in Sudbury. The explored lightning characteristics include stroke polarity, lake water or land termination (WT or LT), ground stroke densities...
Electric field distributions within lightning protection volume of a single lightning rod are studied for the case of a vertical downward leader. The boundaries of volumes with the electrical strength exceeding its critical value for ionization in air are determined, for the rod itself and for objects within its lightning protection (LP) volume. Distance from the leader channel related to the initial...
Electric field distributions within lightning protection volume of a single lightning rod are studied for the case of a vertical downward leader. The boundaries of volumes with the electrical strength exceeding its critical value for ionization in air are determined, for the rod itself and for objects within its lightning protection (LP) volume. Distance from the leader channel related to the initial...
Bus stop shelters discussed in paper are widely used on roads of different categories in Ukraine. They have been designed to provide weather protection to passengers, but are not able to protect people from lightning. Ukrainian lightning protection (LP) norms do not require LP of such structures. Case studies of two very similar lightning accidents with plural sufferers (11 and 5) occurred in 2008...
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