Repeat Problem 6.43 except with the bus 2 real power load changed to 1.0 per unit.

Problem 6.43

or a three-bus power system, assume bus 1 is the slack with a per unit voltage of $1.0\angle 0^{\circ }$, bus 2 is a PQ bus with a per unit load of $2.0+j0.5$, and bus 3 is a PV bus with 1.0 per unit generation and a 1.0 voltage setpoint. The per unit line impedances are $j0.1$ between buses 1 and $2,j0.4$ between buses 1 and 3, and $j0.2$ between buses 2 and 3. Using a flat start, use the Newton-Raphson approach to determine the first iteration phasor voltages at buses 2 and 3.