The Bergeron model is based on a distributed LC parameter travelling wave line model, with lumped resistance. It represents the L and C elements of a PI Section in a distributed manner (i.e. it does not use lumped parameters). It is roughly equivalent to using an infinite number of PI Sections, except that the resistance is lumped (1/2 in the middle of the line, 1/4 at each end).
Like PI Sections, the Bergeron Model accurately represents the fundamental frequency only. It also represents impedances at other frequencies, except that the losses do not change. This model is suitable for studies where the fundamental frequency load flow is most important (i.e. relay studies, load flow, etc.).
NOTE: See Selecting the Proper Line Model for more details on whether the Bergeron model is right for your study.
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