The bus admittance matrix for a power system network is
[
−j39.9 j20 j20
j20 −j39.9 j20
j20 j20 −j39.9
]pu
There is a transmission line, connected between buses 1 and 3, which is represented by the circuit shown in figure.

If this transmission line is removed from service, what is the modified bus admittance matrix?

Question

Examsnet · Accepted Answer

Correct Answer is : [−j19.95j200j20−j39.9j200j20−j19.95]pu

GATE Electrical Engineering (EE) 2017 Shift 1 Solved Paper