MoM-SO: a Complete Method for Computing the Impedance of Cable Systems Including Skin, Proximity, and Ground Return Effects

Abstract

The availability of accurate and broadband models for underground and submarine cable systems is of paramount importance for the correct prediction of electromagnetic transients in power grids. Recently, we proposed the MoM-SO method for extracting the series impedance of power cables while accounting for skin and proximity effect in the conductors. In this paper, we extend the method to include ground return effects and to handle cables placed inside a tunnel. Numerical tests show that the proposed method is more accurate than widely-used analytic formulas, and is much faster than existing proximity-aware approaches like finite elements. For a three-phase cable system in a tunnel, the proposed method requires only 0.3 seconds of CPU time per frequency point, against the 8.3 minutes taken by finite elements, for a speed up beyond 1000 X.

This paper has now been published in the IEEE Trans. on Power Delivery in Oct. 2015, vol. 30, no. 5, pp. 2110-2118. DOI: 10.1109/TPWRD.2014.2378594

References in corpus (2)

• Fast Computation of the Series Impedance of Power Cables with Inclusion of Skin and Proximity Effects
• Proximity-Aware Calculation of Cable Series Impedance for Systems of Solid and Hollow Conductors

Cited by in corpus (4)

• Accurate Impedance Calculation for Underground and Submarine Power Cables using MoM-SO and a Multilayer Ground Model
• A Macromodeling Approach to Efficiently Compute Scattering from Large Arrays of Complex Scatterers
• Vector Single-Source Surface Integral Equation for TE Scattering From Cylindrical Multilayered Objects
• Towards a Unified Approach to Electromagnetic Analysis by Objects Embedded in Multilayers