Infoscience

Conference paper

Interaction between grounding systems and nearby lightning for the calculation of overvoltages in overhead distribution lines

The aim of the paper is to analyze overvoltages in overhead distribution lines induced by nearby lightning return stroke currents taking into account also the conductive coupling between the lightning current injected into the soil and the line's grounding system. Experimental results obtained in 2003 at the International Center for Lightning Research and Testing (ICLRT) in Florida have shown that significant currents were coupled with an overhead experimental line through its grounding system by nearby rocket-triggered lightning. The paper first proposes a conductive coupling model between the lightning current injected into the soil and the nearby line grounding system, then presents the incorporation of such a model into the LIOV-EMTP computer code. The paper finally presents an experimental validation of the proposed models by making reference to results obtained during the above-mentioned triggered-lightning campaign. © 2011 IEEE.

Keywords: grounding systems ; lightning induced overvoltages ; lightning protection ; overhead distribution lines ; Computer codes ; Conductive coupling ; Experimental validations ; Florida ; International center for lightning research and testing ; Lightning currents ; Lightning return-stroke current ; Over-voltages ; Overhead distribution line ; Geologic models ; Surge protection ; Sustainable development ; Electric grounding

Note:

Department of Electrical Engineering, University of Bologna, Bologna, Italy Swiss Federal Institute of Technology of Lausanne, Switzerland University of Florida, Gainesville, FL, United States EnerNex Corporation, Knoxville, TN 37922, United States

Conference code: 86744

Export Date: 25 April 2012

Source: Scopus

Art. No.: 6019438

doi: 10.1109/PTC.2011.6019438

Language of Original Document: English

Correspondence Address: Napolitano, F.; Department of Electrical Engineering, University of Bologna, Bologna, Italy; email: fabio.napolitano2@unibo.it

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Sponsors: IEEE; IEEE Power and Energy Society (PES)

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Record created on 2012-05-01, modified on 2012-07-06

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