find_y_bus

This is an algorithm that produces the Y bus matrix, deriving line data from an excel file. Just use the file name as the argument.

The algorithm assumes that each line has an R,X and a line charging susceptance, B. If your problem requires you to add a ground shunt element, change-

1. Line 10 - impedances: Store the additional data into the array
2. Line 11: multiply the additional impedance data by imaginary number if needed
3. Line 22: In the formula to calculate z (it's actually admittance), Select the additional columns that contain the additional impedance data.
4. Line 30: In the formula to calculate impedance , Select the additional columns that contain the additional impedance data.