- Question 2 25 Marks The Single Line Diagram Of A Three Phase Power System Is Shown In Figure 1 The Manufacturer S Dat 1 (99.94 KiB) Viewed 28 times
QUESTION 2 [25 MARKS] The single-line diagram of a three-phase power system is shown in Figure 1. The manufacturer's data for each device is given in Table 2. G G: 80 MVA, T1: 50 MVA, T2: 50 MVA, T3: 60 MVA, TI (ii) T3 20 kV, 22/110 kV, 110/11 kV, 22/220 kV, T5 Line 2 Line 1 M Line 3 Figure 1 X=18% X=12% X=8% X=9% Table 2 T6 T2 T4 T4: 55 MVA, T5: 40 MVA, T6: 40 MVA, M: 60 MVA, 10.5 kV, LOAD 220/ 11 kV, 220/11 kV, 11 / 220kV, X=12% X=6% X=5% X=19.5% The load consumes 50 MVA, 0.6 power factor lagging at 10.5 kV. Line 1, 2 and 3 have reactance of 13.5 , 48.4 2 and 58.3 2 respectively. (i) Develop an equivalent impedance diagram using base value of 100 MVA and 20 kV on the generator side. Determine current drawn by the motor, IM. [25 Marks] [CO2, PO2, C3]