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Lightning Shielding Analysis of EHV and UHV AC Transmission Lines: the Effect of Operating Voltage and Terrain Topography
National University of Colombia.
National University of Colombia.
KTH, School of Electrical Engineering (EES), Electromagnetic Engineering.ORCID iD: 0000-0002-6375-6142
National University of Colombia.
2014 (English)Conference paper (Refereed)
Abstract [en]

The Electrogeometric Method (EGM) is commonly used to analyze and design the external lightning protection of power transmission lines. However, it has been found that the EGM is not able to predict the shielding failure rate observed in EHV and UHV transmission lines. In this article, an analysis of the lightning attachment to EHV and UHV transmission lines is presented, using the Self-consistent Leader Inception and Propagation Model (SLIM). The study is focused on the effect of operating voltage and type of terrain on the estimated lightning attraction distances for overhead transmission lines. It is found that the phase conductors have slightly larger lightning attraction areas during their positive voltage semi cycle and much more over mountainous terrain.

Place, publisher, year, edition, pages
2014. 1756-1760 p.
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Electrical Engineering
URN: urn:nbn:se:kth:diva-166285DOI: 10.1109/ICLP.2014.6973413ISI: 000358572100329ScopusID: 2-s2.0-84919797711OAI: diva2:810413
International Conference on Lightning Protection (ICLP 2014)

QC 20150508

Available from: 2015-05-07 Created: 2015-05-07 Last updated: 2015-09-11Bibliographically approved

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