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Thin wire formulation for 3-D modeling of a ground wire

Wan Ahmad, Wan Fatinhamamah and Thomas, D. W. P. and Christopoulos, C. (2008) Thin wire formulation for 3-D modeling of a ground wire. In: Transmission and Distribution Conference and Exposition, 21-24 April 2008 , Chicago, IL . pp. 1-6.

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This work is aimed at developing electromagnetic modeling techniques to enable researchers to predict the behaviors of substation grounding system to lightning strikes. Transient responses of a grounding system at a substation of a power plant have been investigated using three 3-D transmissionline models. 3-D TLM algorithm has been used and a better performance of a thin wire model for ground conductors in homogeneous lossy medium was developed for 3-D modeling of a grounding system. A coaxial system has been employed as a simple well behaved structure with parameters which can be found analytically of the transmission-line model in order to develop this thin wire model for the 3-D formulation. It is validated by comparing its characteristic impedance with an airfilled square coaxial transmission line model where the results are in a good agreement.

Item Type:Conference or Workshop Item (Paper)
Keyword:Finite Difference Time Domain (FDTD), Transmission-Line Modeling (TLM), derivative Gaussian wave, earth grounding conductors, homogeneous soil medium, lightning protection system (LPS), lightning stroke, square coaxial transmission line model, thin wire
Subject:Electric transmission lines
Subject:Lightning protection
Faculty or Institute:Faculty of Engineering
ID Code:8736
Deposited By: Samsida Samsudin
Deposited On:17 Dec 2010 11:11
Last Modified:08 Nov 2013 10:33

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