1 Log tab
2 Example of a 735-kV three-phase line transposed.

Log tab

The Line Generator Log tab displays a report of the computed data. It can then be loaded onto the line. This tab will be fulfilled once the electrical parameters computation.

The displayed electrical parameters are:

R matrix, L matrix, and C matrix parameters.
TI tranformation matrix.
R, L, and C vectors of values for modal parameters.
R, L, and C vectors of self-impedance values are displayed for zero & positive sequence parameters.
R, L, and C vectors for mutual impedance values between lines are displayed for mutual zero-sequence.

The R, L, C parameters are always displayed respectively in ohms/km, henries/km, and farads/km

Example of a 735-kV three-phase line transposed.

Check the figure 7.1 for the geometrical parameters of the line and 7.3 for the layout of conductor.

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Hyperline Report                                   Thu Jun 29 16:42:57 EDT 2023
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COMMENTS: 

Example of a 735-kV three-phase line
Three bundles of 4 Bersfort ACSR 1355 MCM conductors
Two 1/2 inch-diameter steel ground wires
Ytower and Ymin are the average heights of conductors
LINE GEOMETRY:

Frequency (Hz): 60.0
Ground resistivity (Ω·m): 100.0
Number of phase conductors (bundles): 3
Number of ground wires (bundles): 2

------------------------------------------------------------------------
 Conductor     Phase         X        Y Tower      Y Min     Conductor  
  (bundle)     Number     (meters)    (meters)    (meters)      Type    
------------------------------------------------------------------------
     p1          1         -12.80160    20.72640    20.72640     1      
     p2          2           0.00000    20.72640    20.72640     1      
     p3          3          12.80160    20.72640    20.72640     1      
     g1          0          -8.99160    32.91840    32.91840     2      
     g2          0           8.99160    32.91840    32.91840     2      
------------------------------------------------------------------------

CONDUCTOR AND BUNDLE CHARACTERISTICS:

Number of conductor types or bundle types: 2
Transposition Options: Untransposed
Conductor internal inductance evaluated from: T/D Ratio
Include conductor skin effect: true

------------------------------------------------------------------------------------------------------------
 Conductor    Outside                                DC       Relative   Conductors    Bundle      Angle    
    Type      Diameter   T/D Ratio      GMR      Resistance Permeability Per Bundle   Diameter  Conductor 1 
                (cm)                    (cm)       (Ω/km)                               (cm)     (degrees)  
------------------------------------------------------------------------------------------------------------
     1           3.55600     0.37500  0.00000000  0.04304860     1.00000     4          64.65824       45.00
     2           1.27000     0.50000  0.00000000  3.10685596     1.00000     1           0.00000        0.00
------------------------------------------------------------------------------------------------------------

LINE PARAMETERS:

Resistance matrix (ohm/km):
 107.0972e-03  97.288142e-03  94.985601e-03 
 97.288142e-03  110.49444e-03  97.288142e-03 
 94.985601e-03  97.288142e-03  107.0972e-03 

Inductance matrix (H/km):
 1.5767213e-03  751.60911e-06  616.27982e-06 
 751.60911e-06  1.5708151e-03  751.60911e-06 
 616.27982e-06  751.60911e-06  1.5767213e-03 

Capacitance matrix (F/km):
 11.661265e-09  -2.1268277e-09  -583.62337e-12 
 -2.1268277e-09  12.117397e-09  -2.1268277e-09 
 -583.62337e-12  -2.1268277e-09  11.661265e-09 


Modal parameters for: Untransposed

Transformation matrix:
 595.18362e-03  -707.10678e-03  -413.16241e-03 
 539.91787e-03  -4.2940592e-15  811.53746e-03 
 595.18362e-03  707.10678e-03  -413.16241e-03 

Modal resistances [0 1 2 3 ... N] (ohm/km)
300.43789e-03 12.111597e-03 11.281739e-03 

Modal inductances [0 1 2 3 ... N] (H/km)
2.977745e-03 960.44144e-06 775.18526e-06 

Modal capacitances [0 1 2 3 ... N] (F/km)
8.5801475e-09 12.244888e-09 14.548121e-09 

Self impedance (Zero-sequence & Positive-sequence):

Line 1
[R0 R1] =   301.27087e-03   11.708982e-03 (ohm/km)
[L0 L1] =   2.9877512e-03   868.25318e-06 (H/km)
[C0 C1] =   8.5884565e-09   13.425735e-09 (F/km)

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REFERENCES

[1] HYPERSIM Reference guide manual for software version 9.1.
[2] Dommel, H., et al., Electromagnetic Transients Program Reference Manual (EMTP Theory Book), 1986.
[3] Carson, J. R., "Wave Propagation in Overhead Wires with Ground Return," Bell Systems Technical Journal, Vol. 5, pp 539-554, 1926.

HYPERSIM Documentation

Line Generator | Line Data Log

Log tab

Example of a 735-kV three-phase line transposed.