Simulate distance protection in simulink

[minhduc515]

Hi, I'm learning Electrical engineering, and I'm trying to Simulate distance protection, using matlab/simulink
I searched google and it has many documents about this problem, but those only show the result, and also i can't find any simulation file

So i have many questions :
1. how to calculate the line impedance ? in simulink distribiuted line model, it only have option for R,L and C :

Spoiler: image

2.how to plot quadrilateral characteristic (or mho ) and locus of R and X of impedance line, like that :

Spoiler: image

Thanks for your help !

 

[NateD]

1. To calculate the line impedance, you can use the distributed line model in Simulink. This model allows you to specify the R, L, and C values for each segment of the line. You can then use the model to calculate the total impedance of the line. 2. To plot the quadrilateral characteristic and locus of R and X of impedance line, you can use the Simulink model to calculate the impedance of the line at different frequencies and then plot the magnitude and phase of the impedance as a function of frequency. This can be done using the Bode plot tool in Simulink.