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A frequency‐independent circuit model of a conductor under surge conditions
Author(s) -
Davies A. E.,
Tong Y. K.,
Lewin P. L.,
German D. M.
Publication year - 1995
Publication title -
international journal of numerical modelling: electronic networks, devices and fields
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.249
H-Index - 30
eISSN - 1099-1204
pISSN - 0894-3370
DOI - 10.1002/jnm.1660080206
Subject(s) - surge , conductor , transient (computer programming) , equivalent circuit , overhead (engineering) , electronic engineering , computation , transmission line , short circuit , finite element method , current (fluid) , electric power transmission , network analysis , electrical engineering , computer science , voltage , engineering , mathematics , algorithm , structural engineering , geometry , operating system
This paper presents a circuit‐based model of a current carrying conductor that can provide instantaneous ohmic losses under surge conditions. The model is frequency independent and can be used to calculate transient current characteristics of surges on overhead transmission lines. The theoretical current distribution under lightning surge conditions is used to demonstrate the validity of the model and the results are compared with values obtained using a finite element analysis package. There is a good correlation between the two methods with the circuit‐based model having the advantages of being less cumbersome, requiring shorter computation time and being simple to implement in transient analysis packages.