Possible effect of the ground altitude on the lightning striking distance

Mingli Chen, Xueqiang Gou, Yaping Du

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

A simple self-consistent propagation model of bi-directional leader with a streamer zone in front of the lead tip was developed. The model enables the calculation of leader channel parameters, such as leader charge density, leader current, leader potential, and lightning striking distance to flat ground. According to the leader potential concept recently proposed by Mazur and Ruhnke, the lightning striking distance is directly related to the critical electric field in the negative streamer zone in front of the leader tip and to the leader potential. The former is apparently dependent on the ground altitude above sea level and the latter may also affected by it. Based on the Mazur's leader potential concept and this leader model, the effect of regional ground altitude on lightning striking distance was investigated. The result shows that the striking distance increases significantly as the ground altitude increases. This is mainly due to that the critical electric field necessary for sustaining the negative streamer zone decreases as the ground altitude increases. It also shows that the leader potential and the total charge transferred by the return stroke are ground altitude dependent. This means that the relationship of the striking distance versus the prospective return stroke peak current is also the ground altitude dependent. The result is useful to both physical and engineering applications.
Original languageEnglish
Title of host publication2010 30th International Conference on Lightning Protection, ICLP 2010
PublisherIEEE
ISBN (Electronic)9788890551901
DOIs
Publication statusPublished - 7 Feb 2017
Event30th International Conference on Lightning Protection, ICLP 2010 - Cagliari, Italy
Duration: 13 Sep 201017 Sep 2010

Conference

Conference30th International Conference on Lightning Protection, ICLP 2010
CountryItaly
CityCagliari
Period13/09/1017/09/10

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Safety, Risk, Reliability and Quality
  • Energy Engineering and Power Technology

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