Answer Happy

a=1, b=9,c=7
km Figure 2 shows a online diagram of a system in which three-phase generator is rated (300+abc) MVA, 20 KV with a subtransient reactance of 0.2 per-unit and with ts neutral grounded through a 0.4 0 reactor. The transmission line is 64 Km long with a series reactance of 0.5 The three-phase transformer T, is rated 350 MVA, 230:20 Kv with a leakage reactance of 0.1 per unit. Transformer T₂ is composed of three signle-phase transformers, each rated 100 MVA, 127:13.2 KV with a leakage reactance of 0.1 per unit. Two 13.2 KV motors M₁ and M₂ with a subtransient reactance of 0.2 per unit for each motor represent the load. M₁ has a rated input of 200 MVA with its neutral grounded through 0.4 Q current limiting reactor. M₂ has a rated input of 100 MVA with its neutral not connected to ground. Neglect phase shifts associated with the transformers. Choose the generator rating as base in the generator circuit and: a. Draw the positive sequence reactance diagram showing all reactances in per unit b. The M₁ and M₂ have inputs of (120+ab) and (60+ab) MW, respectively at (132+ab) KV, and both operate at unity power factor. Deermine the generator terminal voltage and voltage regulation of the line. (20 kV) (13.8 kV) M₁ (230 kV) O T₁ K३६ । 38 AYI M₂ T₂ men 38 Y1