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a) State THREE advantages of using per unit in power system Two generators, G1 and G2 are used to supply load in the pow
Posted: Mon Jun 06, 2022 7:09 pm
by answerhappygod
- A State Three Advantages Of Using Per Unit In Power System Two Generators G1 And G2 Are Used To Supply Load In The Pow 1 (45.74 KiB) Viewed 28 times
a) State THREE advantages of using per unit in power system Two generators, G1 and G2 are used to supply load in the power system shown in figure 1. Using a base MVA of 100MVA and a base voltage of 20kV, [3marks] i. Determine the base quantities in other parts of the system and evaluate the corresponding per unit values. ii. Draw an impedance and reactance diagram of the system using the p.u values. [6 marks] [6 marks] T₁ T2 G₁ 38 Line G₂ Load Figure 1 The three-phase power and line ratings are as follows: G₁ 90 MVA 20 kV X = 9% X = 16% Ti 80 MVA 20/200 kV 200/20 kV X = 20% 72 80 MVA 18 kV X = 9% G2 90 MVA 200 kV X = 120 f Line: 200 kV S 48 MW +j64 Mvar Load: