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Title:Izračun elektromagnetnega polja v okolici ozemljitvenega sistema ob udaru strele : magistrsko delo
Authors:ID Osojnik, Danilo (Author)
ID Jesenik, Marko (Mentor) More about this mentor... New window
ID Trbušić, Mislav (Comentor)
Files:.pdf MAG_Osojnik_Danilo_2024.pdf (8,65 MB)
MD5: EFE0E8051A7B9B9D7917E1FCD00D1980
 
Language:Slovenian
Work type:Master's thesis/paper
Typology:2.09 - Master's Thesis
Organization:FERI - Faculty of Electrical Engineering and Computer Science
Abstract:V magistrskem delu smo analizirali električni potencial in napetost koraka na površini zemlje v prisotnosti ozemljitvene mreže. To smo storili tako, da smo najprej določili enoplastni in triplastni model zemlje. Podatke za določitev modelov smo pridobili iz meritev, pri čemer smo uporabili Wennerjevo metodo. Enoplastni model smo določili iz povprečja izmerjenih vrednosti specifične upornosti, medtem ko smo triplastni model določili s pomočjo optimizacijskih metod. Nato smo v programu Flux 3D izdelali različne modele zemlje z ozemljitveno mrežo. Ta je imela različno gostoto in se je nahajala na treh različnih globinah. Na opisanih modelih smo simulirali udar strele in analizirali potencial na površini in v globini zemlje. Iz potencialov smo izračunali napetost koraka in jo za obravnavane scenarije med seboj primerjali.
Keywords:Prenapetosti, ozemljitvena mreža, potencial, napetost koraka
Place of publishing:Maribor
Place of performance:Maribor
Publisher:[D. Osojnik]
Year of publishing:2024
Number of pages:1 spletni vir (1 datoteka PDF (XVIII, 84 f.))
PID:20.500.12556/DKUM-88820 New window
UDC:621.316.99.015.3(043.2)
COBISS.SI-ID:206139907 New window
Publication date in DKUM:02.07.2024
Views:373
Downloads:141
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FERI
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Licences

License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:27.05.2024

Secondary language

Language:English
Title:Computation of electromagnetic field in the surrounding of the grounding system during a lightning strike
Abstract:In the master’s thesis, we analyzed the electric potential and step voltage on the soil surface in the presence of a grounding grid. This was done by first determining a single- layer and a three-layer soil model. The data for determining the models were obtained from measurements using the Wenner method. The single-layer model was determined from the average of the measured specific electrical resistance values, while the three-layer model was determined using optimization methods. Then, various soil models with a grounding grid were created in Flux 3D software. The grounding grid had different densities and was situated at three different soil depths. On the models described above simulations of a lightning strike were done. After that, the potential at the surface and volume of the soil were analysed. From electric potentials, the step voltage for the considered scenarios was calculated and compared with each other.
Keywords:Overvoltages, grounding grid, electric potencial, step voltage


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