BUS ADMITTANCE MATRIX - PART - 06 - FORMATION OF Y-BUS - ONE PROBLEM

PROBLEM - 01

For the system shown in the figure write the elements of Y-bus directly by inspection method. Neglect line charging admittance of lines connected between buses (4-1); (4-3) and (4-2), while the half line charging admittance of lines between buses 1-2 and 3-2 is j0.25 p.u.

CASE – 01 – Remove the line between bus 2-4 and find the new admittance matrix.

CASE – 02 – Remove the line between bus 3-4 and find the new admittance matrix.