@inproceedings{KernImaniVashianiTimmermanns2021,
  author    = {Kern, Alexander and Imani Vashiani, Anahita and Timmermanns, Tobias},
  title     = {Threat for human beings due to touch voltages and body currents caused by direct lightning strikes in case of non-isolated lightning protection systems using natural components},
  series = {35th International Conference on Lightning Protection (ICLP) and XVI International Symposium on Lightning Protection (SIPDA)},
  booktitle = {35th International Conference on Lightning Protection (ICLP) and XVI International Symposium on Lightning Protection (SIPDA)},
  publisher = {IEEE},
  isbn      = {978-1-6654-2346-5},
  doi       = {10.1109/ICLPandSIPDA54065.2021.9627465},
  pages     = {8 Seiten},
  year      = {2021},
  abstract  = {For typical cases of non-isolated lightning protection systems (LPS) the impulse currents are investigated which may flow through a human body directly touching a structural part of the LPS. Based on a basic LPS model with conventional down-conductors especially the cases of external and internal steel columns and metal fa{\c{c}}ades are considered and compared. Numerical simulations of the line quantities voltages and currents in the time domain are performed with an equivalent circuit of the entire LPS. As a result it can be stated that by increasing the number of conventional down-conductors and external steel columns the threat for a human being can indeed be reduced, but not down to an acceptable limit. In case of internal steel columns used as natural down-conductors the threat can be reduced sufficiently, depending on the low-resistive connection of the steel columns to the lightning equipotential bonding or the earth termination system, resp. If a metal fa{\c{c}}ade is used the threat for human beings touching is usually very low, if the fa{\c{c}}ade is sufficiently interconnected and multiply connected to the lightning equipotential bonding or the earth termination system, resp.},
  language  = {en}
}
@inproceedings{BirklDiendorferKernetal.2018,
  author    = {Birkl, Josef and Diendorfer, Gerhard and Kern, Alexander and Thern, Stephan},
  title     = {Extremely high lightning peak currents},
  series = {34th International Conference on Ligntning Protection, 02-07 September 2018},
  booktitle = {34th International Conference on Ligntning Protection, 02-07 September 2018},
  isbn      = {978-1-5386-6635-7},
  pages     = {7 Seiten},
  year      = {2018},
  language  = {en}
}
@inproceedings{KernBraun2014,
  author    = {Kern, Alexander and Braun, Christian},
  title     = {Risk management according to IEC 62305-2 edition 2: 2010-12 assessment of structures with a risk of explosion},
  series = {2014 International Conference on Lightning Protection (ICLP), Shanghai, China},
  booktitle = {2014 International Conference on Lightning Protection (ICLP), Shanghai, China},
  organization    = {International Conference on Lightning Protection <2014, Shanghai>},
  pages     = {1237 -- 1242},
  year      = {2014},
  abstract  = {Risk management for structures with a risk of explosion should be considered very carefully when performing a risk analysis according to IEC 62305-2. In contrast to the 2006 edition of the standard, the 2010 edition describes the topic "Structures with a risk of explosion" in more detail. Moreover, in Germany separate procedures and parameters are defined for the risk analysis of structures with a risk of explosion (Supplement 3 of the German DIN EN 62305-2 standard). This paper describes the contents and the relevant calculations of this Supplement 3, together with a numerical example.},
  language  = {en}
}
@inproceedings{RousseauKern2014,
  author    = {Rousseau, Alain and Kern, Alexander},
  title     = {How to deal with environmental risk in IEC 62305-2},
  series = {2014 International Conference on Lightning Protection (ICLP), Shanghai, China},
  booktitle = {2014 International Conference on Lightning Protection (ICLP), Shanghai, China},
  organization    = {International Conference on Lightning Protection <2014, Shanghai>},
  pages     = {521 -- 527},
  year      = {2014},
  abstract  = {The 2nd edition of the lightning risk management standard (IEC 62305-2) considers structures, which may endanger environment. In these cases, the loss is not limited to the structure itself, which is valid for usual structures. In the past (Edition 1) this danger was simply taken into account by a special hazard factor, multiplying the existing risk for the structure with a number. Now, in the edition 2, we add to the risk for the structure itself a "second risk" due to the losses outside the structure. The losses outside can be treated independently from what occurs inside. This is a major advantage to analyze the risk for sensitive structures, like chemical plants, nuclear plants, or structures containing explosives, etc. In this paper, the existing procedure given by the European version EN 62305-2 Ed.2 is further developed and applied to a few structures.},
  language  = {en}
}
@inproceedings{LoPiparoKernMazzetti2012,
  author    = {Lo Piparo, G. B. and Kern, Alexander and Mazzetti, C.},
  title     = {Some masterpoints about risk due to lightning},
  series = {International Conference on Lightning Protection (ICLP) : 2 - 7 Sept. 2012, Vienna},
  booktitle = {International Conference on Lightning Protection (ICLP) : 2 - 7 Sept. 2012, Vienna},
  publisher = {IEEE},
  address   = {Piscataway, NJ},
  organization    = {International Conference on Lightning Protection <2012, Wien>},
  isbn      = {978-1-4673-1896-9 (E-Book) ; 978-1-4673-1898-3 (Print)},
  pages     = {1 -- 6},
  year      = {2012},
  language  = {en}
}
@inproceedings{KernSchelthoffMathieu2012,
  author    = {Kern, Alexander and Schelthoff, Christof and Mathieu, Moritz},
  title     = {Calculation of interception efficiencies for mesh-type air-terminations according to IEC 62305-3 using a dynamic electro-geometrical model},
  series = {International Conference on Lightning Protection (ICLP) : 2 - 7 Sept. 2012, Vienna},
  booktitle = {International Conference on Lightning Protection (ICLP) : 2 - 7 Sept. 2012, Vienna},
  publisher = {IEEE},
  address   = {Piscataway, NJ},
  organization    = {International Conference on Lightning Protection <2012, Wien>},
  isbn      = {978-1-4673-1896-9 (E-Book) ; 978-1-4673-1898-3 (Print)},
  pages     = {1 -- 6},
  year      = {2012},
  language  = {en}
}
@inproceedings{WetterKern2014,
  author    = {Wetter, Martin and Kern, Alexander},
  title     = {Number of lightning strikes to tall structures - comparison of calculations and measurements using a modern lightning monitoring system},
  series = {2014 International Conference on Lightning Protection (ICLP), Shanghai, China},
  booktitle = {2014 International Conference on Lightning Protection (ICLP), Shanghai, China},
  organization    = {International Conference on Lightning Protection <2014, Shanghai>},
  pages     = {1 -- 7},
  year      = {2014},
  language  = {en}
}
@inproceedings{KernDikta2009,
  author    = {Kern, Alexander and Dikta, Gerhard},
  title     = {Probability of damage of electrical and electronic systems due to indirect lightning flashes - investigation of data from German insurance companies},
  year      = {2009},
  abstract  = {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.},
  subject      = {Blitzschutz},
  language  = {en}
}
@inproceedings{ZischankKernFrentzeletal.2000,
  author    = {Zischank, Wolfgang J. and Kern, Alexander and Frentzel, Ralf and Heidler, Fridolin and Seevers, M.},
  title     = {Assessment of the lightning transient coupling to control cables interconnecting structures in large industrial facilities and power plants},
  year      = {2000},
  abstract  = {Large industrial facilities and power plants often require a huge number fo information and control cables between the differnet structures. These I\&C-cables can be routed in reinforced concrete cable ducts or in isolated buried cable runs. KTA 2206 is the German lightning protection standard for nuclear power plants. During the last several years considerable effort has been made to revise this standard. Despite the well established principles and design guidelines for the construction of the lightning protection system, this standard puts special emphasis on the coupling of transient overvoltages to I\&C-cables.},
  language  = {en}
}
@inproceedings{KernKrichelMueller2001,
  author    = {Kern, Alexander and Krichel, Frank and M{\"u}ller, Klaus-Peter},
  title     = {Lightning protection design of a renewable energy hybrid-system without power mains connection},
  year      = {2001},
  abstract  = {In the year 2000 a direct lightning strike to the hybridsystem without power mains connection VATALI on the Greek island Crete results in the destruction and damage of some mechanical and electrical components. The hybrid-system VATALI was not lightning protected at that time. The hardware damage costs are approx. 60,000 €. The exposed site of the hybrid-system on top of a mountain was and still is the reason for a high risk of lightning strikes. Also in the future further lightning strikes have to be taken into consideration. In the paper a fundamental lightning protection design concept for renewable energy hybrid-systems without power mains connection and protection measures against direct strikes and overvoltages are shown in detail. The design concept was realized exemplarily for the hybrid-system VATALI. The hardware costs for the protection measures were about 15,000 €. About 50\% of the costs are due to protection measures against direct strikes, 50\% are due to overvoltage protection. Future extensions, new installations, or modifications have to be included into the lightning protection design concept of the hybrid-system.},
  language  = {en}
}