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Line Generator | Line Data Log
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
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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
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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.
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