Calculation of frequency-dependent parameters of power cables: matrix partitioning techniques

TitleCalculation of frequency-dependent parameters of power cables: matrix partitioning techniques
Publication TypeJournal Article
Year of Publication2002
AuthorsRivas, R. A., and J. R. Marti
JournalPower Delivery, IEEE Transactions on
Pagination1085 - 1092
Date Publishedoct.
Keywordsarbitrarily shaped power cable, cable geometry, coaxial cables, digital images, EMTP, equivalent circuits, finite element analysis, finite-element method, frequency-dependent parameters calculation, impedance matrix, inductance, matrix partitioning techniques, partial subconductor equivalent circuit method, partial subconductor impedance matrices, power cables, proximity effect, resistance, sector-shaped cables, skin effect

In this paper, a new algorithm for the calculation of the frequency-dependent parameters of arbitrarily shaped power cable arrangements is presented. The algorithm uses digital images to discretize the cable geometry and partial subconductor equivalent circuit method to estimate the cable parameters. The proposed methodology adapts itself to the physical memory of the computer, allowing the program to partition the partial subconductor impedance matrices when their sizes exceed the available physical memory. Coaxial cables and sector-shaped cables are studied, and the results are compared with those obtained from analytical formulae and the finite-element method.


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