Application of a harmonic expansion method approach to the computation of L and C matrices for open-boundary inhomogeneous multiconductor transmission-line structures with strong proximity effects present

Faria, J. A. Brandão

doi:10.1007/s00202-007-0083-1

Cited by 5 publications

(1 citation statement)

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“…Because of the limitations of analytic formulas, several numerical techniques have been proposed. The harmonic expansion method accounts for proximity effects at high frequencies under the assumption that the skin effect is fully developed [3,11,12,13]. Techniques based on the finite element method (FEM) [14,8,15] fully predict proximity effect at both low and high frequencies, but they tend to be excessively time-consuming because of the fine mesh required to properly discretize the cross section.…”

Section: Introductionmentioning

confidence: 99%

An Equivalent Surface Current Approach for the Computation of the Series Impedance of Power Cables with Inclusion of Skin and Proximity Effects

Patel

Gustavsen

Triverio

2013

IEEE Trans. Power Delivery

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We present an efficient numerical technique for calculating the series impedance matrix of systems with round conductors. The method is based on a surface admittance operator in combination with the method of moments and it accurately predicts both skin and proximity effects. Application to a three-phase armored cable with wire screens demonstrates a speed-up by a factor of about 100 compared to a finite elements computation. The inclusion of proximity effect in combination with the high efficiency makes the new method very attractive for cable modeling within EMTP-type simulation tools. Currently, these tools can only take skin effect into account.

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