Currents in buried grounding strips connected to communication tower legs during lightning strikes
2008 (English)In: IEEE transactions on dielectrics and electrical insulation, ISSN 1070-9878, E-ISSN 1558-4135, Vol. 15, no 4, 1153-1161 p.Article in journal (Refereed) Published
During a lightning strike to communication tower stroke currents are shared by the tower and by the shields of the cables along the tower. The currents in the tower proceed towards the grounding system (possibly a combination of counterpoises or ring conductors or ground rods or grounding grids) connected to tower legs’ foundation. In this paper, lightning strike to communication tower on mount Gaisberg in Austria is considered and measured currents at the tower top and those shared by an instrumented grounding strip connected to one of the tower leg’s are presented. The measured currents at different locations on the 70-m long ground strip are compared with the predictions of a frequency dependant lossy transmission line (TL) model and reasonably good agreement was found. From this validation it is claimed that the TL models are appropriate for lightning transient analysis of grounding systems.
Place, publisher, year, edition, pages
2008. Vol. 15, no 4, 1153-1161 p.
transmission line theory; lightning; impedance; admittance; counterpoise
Engineering and Technology
IdentifiersURN: urn:nbn:se:kth:diva-62543DOI: 10.1109/TDEI.2008.4591238ISI: 000258095900031OAI: oai:DiVA.org:kth-62543DiVA: diva2:480933
QC 201201202012-01-202012-01-192012-01-20Bibliographically approved