The Frequency Dependent (Mode) model is basically a distributed RLC traveling wave model, which incorporates the frequency dependence of all parameters. Of the two frequency dependent models available, the Frequency Dependent (Phase) Model is the most accurate as it represents the frequency dependence of internal transformation matrices, whereas this model assumes a constant transformation.
For systems of ideally transposed conductors, or 2 conductor horizontal configurations, the 2 Frequency Dependent models will give identical results (as the transformation is constant anyway). Whenever possible, the Frequency Dependent (Phase) Model should be used in place of this model.
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Selecting the Proper Line Model |
NOTE: See the Frequency Dependent (Phase) Model input parameters for more details.
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Curve Fitting Starting Frequency |
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REAL |
Literal |
Select a curve fitting starting frequency [Hz] |
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Curve Fitting End Frequency |
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REAL |
Literal |
Select a curve fitting end frequency [Hz] |
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Frequency to Calculate Constant Transform |
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REAL |
Literal |
Enter the frequency to calculate a constant transform |
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Maximum # of Pole/Zeroes for Surge Admittance |
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INTEGER |
Literal |
Enter the maximum number of poles per column for surge admittance |
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Maximum # of Pole/Zeroes for Propogation Func. |
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INTEGER |
Literal |
Enter the maximum number of poles per delay group for propagation function |
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Maximum Fitting Error for Surge Admittance |
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REAL |
Literal |
Enter the maximum fitting error for surge admittance [%] |
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Maximum Fitting Error for Propagation Func. |
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REAL |
Literal |
Enter the maximum fitting error for the propagation function [%] |
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Interpolate Travel Times? |
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Choice |
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Select Yes or No |
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Output Detailed Output Files? |
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Choice |
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Select Yes or No |
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Least Squares Weighting Factor, 0 to F0 |
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REAL |
Literal |
Enter the least squares weighting factor for the 0 to F0 frequencies |
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Least Squares Weighting Factor at F0 |
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REAL |
Literal |
Enter the least squares weighting factor for the F0 frequency |
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Least Squares Weighting Factor, F0 to Fmax |
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REAL |
Literal |
Enter the least squares weighting factor for the F0 to Fmax frequencies |
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Do You Want this to be a Reflection-less Line (i.e. Infinite Length)? |
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Choice |
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Select Yes or No |