نتایج جستجو برای: lightning protection
تعداد نتایج: 185753 فیلتر نتایج به سال:
This article discusses issues related to indirect lightning on aircraft/rotorcraft. The standard waveforms used for qualifying the vulnerability of a system are introduced, with their frequency spectrum. The identification of the elementary EM coupling phenomenon allows the understanding of the key drivers of the current distribution and field scattering on a complex structure. The system level...
Lightning protection systems (LPS) for wind power generation is becoming an important public issue. A serious damage of blades, accidents where low-voltage and control circuit breakdowns are frequently occur in many wind farms. A grounding system is one of the most important components required for appropriate LPSs in wind turbines WTs. Proper design of a wind turbine grounding system is demand...
In this manuscript, Current Component A lightning strike tests on three different types of carbon fiber reinforced composite panels are analyzed. The feature levels protection: no protection, medium protection and heavy protection. particular it was analyzed if there were any direct correlations between the peak electric current artificial lighting recorded velocities at back surface panels. ex...
Un-accurate modeling of power system may cause to under or over-design the insulation, which in turn, leads to increase in the investment and/or maintenance cost of the network protection against lightning overvoltages. The grounding system is an effective parameter on the magnitude of the lightning overvoltages and insulation coordination of high voltage transmission lines (TLs). This paper pr...
To facilitate the marketing of their devices, the vendors of Early Streamer Emission (ESE) lightning rods are attempting to get the Collection Volume Method (CVM) in IEEE Standard 998 which deals with the Shielding of Substations. This attempt follows their failures before IEC, Standards Australia and the NFPA (National Fire Protection Association). Voting on the standards of the IEEE is done b...
In the paper the results obtained from experiments at a modelled reinforced building in case of a direct lightning strike are compared with calculations. The comparison includes peak values of the magnetic field Hmax, its derivative (dH/dt)max and of induced voltages umax in typical cable routings. The experiments are performed at a 1:6 scaled building and the results are extrapolated using the...
Impulse generator is an indispensible high voltage set. It simulates the voltage due to lightning and switching surges and used for testing of insulation of various electrical equipments like transformer, insulators etc.The standard impulse waveform could be used to test the strength of electrical equipments against the lightning.Lightning characteristics and standard impulse wave form are rela...
Accident Scenarios Caused by Lightning Impact on Atmospheric Storage Tanks Amos Necci*, Giacomo Antonioni, Elisabeth Krausmann, Francesca Argenti, Gabriele Landucci, Valerio Cozzani DICAM-Dipartimento di Ingegneria Civile, Chimica, Ambientale e dei Materiali Alma Mater Studiorum Università di Bologna, via Terracini n.28, 40131 Bologna, Italy European Commission, Joint Research Centre, Institute...
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