Introduction

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• Complex T_i : Since the exact-pi model is produced in phase quantities, it is not subject to the transformation matrix modeling constraints of transients line models. The exact complex transformation matrix can then be correctly used at each frequency at which the pi model is requested (default).
• Balanced: The line is modeled as perfectly transposed. The balanced-line transformation matrix used is the generalized Clarke transformation ( αβ0 ) for an mphase line.
• Double circuit line: This option is only selected for double-circuit lines. The line is modeled as consisting of two separate circuits, each circuit perfectly balanced with respect to itself and to the other circuit. Under these conditions, the only coupling between the two circuits is zero sequence coupling. A special transformation matrix corresponding to this condition is used.

This model is capable to generate the frequency parameters based on a logarithmic or linear scale. On output, the model data file (“model file”) contains the matrices  Y_series(ω) and Y_shunt(ω)  (see Figure 4–1 below) at every frequency requested in “Frequency range”. Note that the specified “Frequency range” must be identical to the one chosen through the “Frequency scan” option in EMTPWorks Simulation Options.

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