16–66 In Figure P16–66, the three buses are interconnected by transmission lines with wire impedances of ZW1 = 100 +

j850 Ω=phase and ZW2 = 50 + j250 Ω=phase. The load at bus 1 draws an apparent power of j S1 j = 400 kVA at a lagging power factor of 0:8. The line voltage at bus 1 is VL1 = 138 kV ðrmsÞ. The load at bus 3 draws an apparent power of j S3 j = 475 kVA at a lagging power factor of 0:9.

The line current in line 2 is IL2 = 2:5AðrmsÞ. Find the apparent power produced by the source at bus 2, the source power factor, and the line voltages at bus 2 and bus 3.

Transcribed Image Text:

ILI Zwi Zw2 Bus 1 -VLI Bus 2 -VL2 $2 FIGURE P16-66 Bus 3 -VL3 $3