Fig Qshows the one-line diagram of a three-phase power system. As shown in Fig. Q3. the…

Fig Qshows the one-line diagram of a three-phase power system.
As shown in Fig. Q3. the two zones are connected by a 400 MVA,
240-kV/24-kV, _A three phase transformer. The Y-A three phase
transfonmer has an equivalent series impedance of ZTH – 1.2 + j1.6n
per phase referred to the high voltage side (primary side). The
three-phase power system can be studied with per unit quantities
using base values of S-500 MVA and 240 kV in zone 1.
By using the common base of 500 MVA and 240 kV in zone 1.
calculate a. The base value of the voltage in zone 2. [1 Mark] b.
The base value of the inpedance in zone 1. [1 Mark] c. The base
value of the impedance in zone 2. [1 Mark] d. All impedances
including the load impedance in per-unit. [3 Marks]. By neglecting
the American standard phase shift, and assuming that the
line-to-line load voltage Vioad is equal to 22 kV: a. Draw the
per-unit equivalent circuit. [2 Marks] b. Determine the per unit
value of the current supplied by the generator; give your answer in
polar form. [1 Mark]. c. By choosing the line-to-neutral load
voltage as a reference, find the phasor voltage

in Time 1hour. 29 minutes 10 seconds Question completos A 400-MVA, 200-V 20-5V, three phase Y-Y transformer has an equivalent series cance of Zre – 0.012 +/0.016 per phase referred to the low voltage side (secondary The transformer is supplying a three-phase load of 300-MVA. 0.8 power factor ingging at terminal voltage of 20 kV (line-to-line) on its low-voltage side (secondary side) as shown in Fig. 02. The primary is supplied from a transmission line with an impedance of 21 -0.5 +1.0 per phase The line-to-neutral load terminal voltage can be chosen as a reference 400 MVA V – 20 kV V Z , -0.5+11.02 200/20 kV GH Z-0010 + 30.016 XY 300 MVA 0.8 pf (lag) V = 20 kV Fig. Q2 a. Determine the line current load drawn by the load. Give your answer in polar. [2 Marks) b. Find the primary currently (see Fig. Q2). Give your answer in polar form. [1 Mark]. c. Find the complex equivalent impedance Zload of the load. (1 Mark] d. Find the equivalent impedance ZTwof the transformer referred to the high-voltage side (primary side) [1 Mark) c. Draw the per-phase equivalent circuit, referred to the high-voltage side (primary side) [1 Mark] f. By choosing the line-to-neutral load terminal voltage as a reference. find the generator terminal voltage V, [1 Mark) Click Save and submit to save and submit. Click Save All Answers to save all answers. Save Answers Case