In this exercise the data is taken from a power system with three busses. First of them is slack bus with V1=1.05|0 deg. (per unit) Second is 400 MW + 250 MVAR power load Third is 200 MW power supply with V3= 1.04 (p.u.) BUS1-2 : 0.02+j0.04 BUS2-3 : 0.0125+j0.025 BUS3-1 : 0.01+j0.03