Using the bus impedance matrices determined in Problem 9.47.

Problem 9.47

Compute the \(3 \times 3\) per-unit zero-, positive-, and negative-sequence bus impedance matrices for the power system given in Problem 4(a). Use a base of \(1000 \mathrm{MVA}\) and \(500 \mathrm{kV}\) in the zone of line 1-2.

Problem 4

In Problem 9.1 and Figure 9.17, let \(765 \mathrm{kV}\) be replaced by \(500 \mathrm{kV}\), keeping the rest of the data to be the same. 

Figure 9.17

"X T. X 15 1 Line-3 Line 1-2. G 38 Line 2-3 (2)