3. (a) The one-line diagram of a three-phase power system is as shon in Fig. 3(a)....

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3. (a) The one-line diagram of a three-phase power system is as shon in Fig. 3(a). Impedance are 15| marked in per unit on a 100-MVA, 400-KV base. The load at bus 2 is Sz=15.93 MW - j33.4 Mvar, and at bus 3 is S3 = 77MW + j14 Mvar. It is required to hold the voltage at bus 3 at 40020° KV. Working in per unit, determine the voltage at buses 2 and 1. Vi V2 V3 j0.5 pu j0.4 pu S2 S3 Fig. 3(a). 3. (b) Form the bus admittance matrix Yous from the following power system network for power flow 51 is as shon in Fig. 3(b). Y3Q Transmission lines Z12 V3 Fig. 3(b). 3. (a) The one-line diagram of a three-phase power system is as shon in Fig. 3(a). Impedance are 15| marked in per unit on a 100-MVA, 400-KV base. The load at bus 2 is Sz=15.93 MW - j33.4 Mvar, and at bus 3 is S3 = 77MW + j14 Mvar. It is required to hold the voltage at bus 3 at 40020° KV. Working in per unit, determine the voltage at buses 2 and 1. Vi V2 V3 j0.5 pu j0.4 pu S2 S3 Fig. 3(a). 3. (b) Form the bus admittance matrix Yous from the following power system network for power flow 51 is as shon in Fig. 3(b). Y3Q Transmission lines Z12 V3 Fig. 3(b).

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The load at bus is S 2 1593 MWj334 Mvar First converting all the values in ... View the full answer