This function Calculates bus impedance matrix of a power system

each line of input argument is a data of one line of system in form of:

number of busbar connected to the line and value of impedance and

impedance in a vector like [1 3 4 5] which means line with impedance of

4 P.U. and impedance of 5 P.U. connected between busbar number 1 and 3.

bus 0 is network s zero point.

input argument is a matrix that is formed by this vectors putted one on each

other.- This function Calculates bus impedance matrix of a power system

each line of input argument is a data of one line of system in form of:

number of busbar connected to the line and value of impedance and

　impedance in a vector like [1 3 4 5] which means line with impedance of

4 P.U. and impedance of 5 P.U. connected between busbar number 1 and 3.

bus 0 is network s zero point.

input argument is a matrix that is formed by this vectors putted one on each

other.