Q1. The figure below shows a one line diagram of a three-phase power network in which a load of 4.0 MV at a power factor

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Q1 The Figure Below Shows A One Line Diagram Of A Three Phase Power Network In Which A Load Of 4 0 Mv At A Power Factor 1 (28.23 KiB) Viewed 54 times

Q1. The figure below shows a one line diagram of a three-phase power network in which a load of 4.0 MV at a power factor of 0.92 lagging is supplied from a 33 kV/11kV substation via a three-phase cable circuit. The impedance of the cable circuit is (2.1+j2.8) 92 per phase, as shown. The voltage at the 33kV bus in the substation is maintained at 33.1 kV. Calculate (1) the voltage at the 11 kV load bus, (ii) the current in the transmission line (cable circuit), and (iii) the power and reactive power flows at the substation 33 kV bus. [25 marks) 33kV/11kV 10 MVA X 0.14 pu Cable (2.1/2.8) Load S 40 MVA PF 0.92 lagging V. - 33.1 kV Answers: 9.372-7.35 KV; 246.52-30.42° A: 4.06 MW; 2.39 MVar.