You need to give some sensible tags. Your question seems to have nothing to do with 'matlab code' as you have currently tagged it.
It is fine to ask questions not explicitly about Matlab if you are using Matlab to solve a problem, but if the question requires expertise that is not connected to Matlab you need to indicate that in the Tags so people with the relevant expertise will find your question and the rest of us can pass on.
I know about 'Matlab code', but I know nothing about connections between buses, lines and impedance!
