Modelling of Nonuniform Lines Using Rational Approximation and Mode Revealing Transformation

Antonio Carlos Lima, Rodolfo Moura, bjorn Gustavsen, Marco Aurélio Schroeder
  • IET Generation Transmission & Distribution, April 2017, the Institution of Engineering and Technology (the IET)
  • DOI: 10.1049/iet-gtd.2016.1676

Modelling of Nonuniform Lines Using Rational Approximation and Mode Revealing Transformation

What is it about?

The authors present a methodology to improve the rational modelling of non-uniform lines (NuLs). First, they formulate a segmented chain matrix representation of the NuL, which is converted into a nodal admittance formulation with respect to the two line ends. The admittance matrix is fitted with rational functions while utilising the so-called chain matrix in combination with a mode revealing transformation matrix, to improve the identification of poorly observable modes and poles. The procedure is demonstrated for a case of a very wide river crossing where the transmission towers are over 300 m high. The results compare favourably with the ones obtained using a numerical Laplace transform.

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http://dx.doi.org/10.1049/iet-gtd.2016.1676

The following have contributed to this page: Rodolfo Antonio Ribeiro de Moura and Marco Aurélio Schroeder