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Probability of damage of electrical and electronic systems due to indirect lightning flashes - investigation of data from German insurance companies

  • In the presented paper data collected from the field related to damage statistics of electrical and electronic apparatus in household are reported and investigated. These damages (total number approx. 74000 cases), registered by five German insurance companies in 2005 and 2006, were adviced by customers as caused by lightning overvoltages. With the use of stochastical methods it is possible, to reasses the collected data and to distinguish between cases, which are with high probability caused by lightning overvoltages, and those, which are not. If there was an indication for a direct strike, this case was excluded, so the focus was only on indirect lightning flashes, i.e. only flashes to ground near the structure and flashes to or nearby an incoming service line were investigated. The data from the field contain the location of damaged apparatus (residence of the policy holder) and the distances of the nearest cloud-to-ground stroke to the location of the damage registered by the German lightning location network BLIDS at the date of damage. The statistical data along with some complementary numerical simulations allow to verify the correspondence of the Standards rules used for IEC 62305-2 with the field data and to define some correction needs. The results could lead to a better understanding whether a damage reported to an insurance company is really caused by indirect lightning, or not.

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Metadaten
Author:Alexander Kern, Gerhard DiktaORCiD
DOI:https://doi.org/10.21269/261
Document Type:Conference Proceeding
Language:English
Year of Completion:2009
Publishing Institution:Fachhochschule Aachen
Contributing Corporation:International Conference on Lightning Protection ; (29, 2008, Uppsala)
Date of the Publication (Server):2009/06/24
Tag:lightning flash
GND Keyword:Blitzschutz
Institutes:FH Aachen / Fachbereich Medizintechnik und Technomathematik
FH Aachen / Fachbereich Energietechnik
Dewey Decimal Classification:6 Technik, Medizin, angewandte Wissenschaften / 62 Ingenieurwissenschaften / 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten