How is the default line parameter calculated in Simulink?

In almost simulink parameter models, they use below default value

Resistance per unit length (Ohms/km) = [0.01273 0.3864]

Inductance per unit length (H/km) = [0.9337e-3 4.1264e-3]

Capacitance per unit length (F/km) = [12.74e-9 7.751e-9]

I want to know how it is calculated.

Thank you for your help in advance!

[Hyunuk Ha]

If you want to assign R/L/C parameters to 'Three-Phase PI Sectin Line',

please refer to :

https://kr.mathworks.com/help/sps/powersys/ref/threephasepisectionline.html#f3-2407896

https://kr.mathworks.com/help/sps/powersys/ref/power_lineparam.html#mw_b5809719-f51f-4934-a5b2-4b48623726cb

You may describe more detailed requirements for specific support.

[JunHyeok Jang]

First of all, thank you for your answer.

But I still can't find where default values come from. I want to know what these values refer to.

ex) IEEE standard or specific transmission line values

Answer 1

[Ayush Singh]

Hi JunHyeok

I understand you want to know where are these default values coming from for different parameters you mentioned above:

You can refer to following link:

https:/www.mathworks.com/help/sps/powersys/ref/pisectionline.html

Hope it helps!