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.
Official URL: http://dx.doi.org/10.1109/TDC.2008.4517167
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.
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