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Statements

Subject Item
n2:RIV%2F49777513%3A23220%2F12%3A43921816%21RIV14-MSM-23220___
rdf:type
n6:Vysledek skos:Concept
dcterms:description
The high number of photovoltaic systems raises questions regarding their operational security even under extremely weather conditions like thunderstorms. Therefore a simplified model of a photovoltaic system, consisting of typical arrangement of solar-panels, was investigated. The influence of lightning strike was simulated by different lightning current shapes and striking points into the solar-panels. It was found, that besides the construction size and shape of the lightning current the striking point has a main influence on the value of induced overvoltages, occurring on the connection point of the solar-panels. The simulation results were confirmed by measurement with an impulse current. The results demonstrate the dangerousness of lightning currents with very fast rise time e.g. subsequent impulse as well as the reducing of induced overvoltages by an appropriate earthing connection. This has to be considered at the design of the lightning protection system. The high number of photovoltaic systems raises questions regarding their operational security even under extremely weather conditions like thunderstorms. Therefore a simplified model of a photovoltaic system, consisting of typical arrangement of solar-panels, was investigated. The influence of lightning strike was simulated by different lightning current shapes and striking points into the solar-panels. It was found, that besides the construction size and shape of the lightning current the striking point has a main influence on the value of induced overvoltages, occurring on the connection point of the solar-panels. The simulation results were confirmed by measurement with an impulse current. The results demonstrate the dangerousness of lightning currents with very fast rise time e.g. subsequent impulse as well as the reducing of induced overvoltages by an appropriate earthing connection. This has to be considered at the design of the lightning protection system.
dcterms:title
Overvoltages in photovoltaic systems induced by lightning strikes Overvoltages in photovoltaic systems induced by lightning strikes
skos:prefLabel
Overvoltages in photovoltaic systems induced by lightning strikes Overvoltages in photovoltaic systems induced by lightning strikes
skos:notation
RIV/49777513:23220/12:43921816!RIV14-MSM-23220___
n6:predkladatel
n21:orjk%3A23220
n3:aktivita
n4:I
n3:aktivity
I
n3:dodaniDat
n17:2014
n3:domaciTvurceVysledku
n13:2633280 n13:3081656
n3:druhVysledku
n12:D
n3:duvernostUdaju
n19:S
n3:entitaPredkladatele
n10:predkladatel
n3:idSjednocenehoVysledku
157497
n3:idVysledku
RIV/49777513:23220/12:43921816
n3:jazykVysledku
n14:eng
n3:klicovaSlova
computer simulation; induction; photovoltaic system; surge protection
n3:klicoveSlovo
n7:computer%20simulation n7:photovoltaic%20system n7:induction n7:surge%20protection
n3:kontrolniKodProRIV
[AC21A105D331]
n3:mistoKonaniAkce
Vienna
n3:mistoVydani
Piscataway
n3:nazevZdroje
2012 International Conference on Lightning Protection : ICLP 2012
n3:obor
n11:JA
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
4
n3:rokUplatneniVysledku
n17:2012
n3:tvurceVysledku
Haller, Rainer Zahlmann, Peter Benešová, Zdeňka Birkl, Josef
n3:typAkce
n15:WRD
n3:zahajeniAkce
2012-09-02+02:00
s:numberOfPages
5
n18:doi
10.1109/ICLP.2012.6344253
n22:hasPublisher
IEEE
n8:isbn
978-1-4673-1897-6
n9:organizacniJednotka
23220