Modelling of single-phase nonuniform transmission lines in electromagnetic transient simulations

TitleModelling of single-phase nonuniform transmission lines in electromagnetic transient simulations
Publication TypeJournal Article
Year of Publication1997
AuthorsNguyen, H. V., H. W. Dommel, and J. R. Marti
JournalPower Delivery, IEEE Transactions on
Volume12
Pagination916 -921
Date Publishedapr.
ISSN0885-8977
Keywordscomputer simulation, electromagnetic transient simulations, EMTP software, exponential transmission line model, fast recursive convolution technique, frequency domain, frequency-dependent functions, frequency-domain analysis, power system analysis computing, power transmission lines, single-phase nonuniform transmission lines, software packages, time-domain analysis, time-domain equations, transmission line theory, two-port equations
Abstract

An exponential single-phase line model is introduced to represent nonuniform transmission lines. When the line parameters are assumed to vary exponentially, a set of two-port equations can be formed in the frequency domain, which contain frequency-dependent functions. These functions are then synthesized with rational functions of the minimum-phase-shift type. Utilizing a fast recursive convolution technique, the time-domain equations of the proposed model reduce to a form similar to those in Bergeron's method. Plus, the model is compatible with general electromagnetic transients programs such as the EMTP. Time-domain simulations with the proposed model show good agreement with published experimental results, and with those produced by a cascade multi-section model where the line is divided into many short sections of uniform transmission lines

URLhttp://dx.doi.org/10.1109/61.584413
DOI10.1109/61.584413

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