Modelling Proximity Effects in Transverse Magnetic Mode for Lightning Studies

Kumar, Udaya and Sreeram, V (2014) Modelling Proximity Effects in Transverse Magnetic Mode for Lightning Studies. In: International Conference on Lightning Protection (ICLP), OCT 11-18, 2014, Tsinghua Univ, Shanghai, PEOPLES R CHINA, pp. 1793-1798.

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Abstract

Lightning strike to instrumented and communication towers can be a source of electromagnetic disturbance to the system connected. Long cables running on these towers can get significant induction to their sheath/core, which would then couple to the connected equipments. For a quantitative analysis of the situation, suitable theoretical analysis is necessary. Due to the dominance of the transverse magnetic mode during the fast rising portion of the stroke current, which is the period of significant induction, a full wave solution based on Maxwell's equations is necessary. Owing to the large geometric aspect ratio of tower lattice elements and for feasibility of a numerical solution, the thin-wire formulation for the electric field integral equation is generally adopted. However, the classical thin-wire formulation is not set for handling non-cylindrical conductors like tower lattice elements and the proximity of other conductors. The present work investigates further into a recently proposed method for handling such a situation and optimizes the numerical solution approach.

Item Type:	Conference Proceedings
Publisher:	IEEE
Additional Information:	Copy right of this article belongs to the IEEE, 345 E 47TH ST, NEW YORK, NY 10017 USA
Keywords:	Thin wire formulation; Proximity Effect; Arbitrarily shaped tower elements
Department/Centre:	Division of Electrical Sciences > Electrical Engineering
Date Deposited:	03 Sep 2015 06:41
Last Modified:	03 Sep 2015 06:41
URI:	http://eprints.iisc.ac.in/id/eprint/52304

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