Question

A 1500-kVA, 6.6 kV, 50 Hz, 6-pole, three-phase, star-connected synchronous generator has a resistance 0.5Q/phase and a synchronous reactance of 5Q/phase. The generator is supplying its rated power at its rated voltage and at a power factor lagging. The rotational loss is 2 kW. Calculate:

(a) the power developed,

(b) the power angle,

(c) the voltage regulation, and

(d) the shaft torque.

A 1500-kVA, 6.6 kV, 50 Hz, 6-pole, three-phase, star-connected synchronous generator has a resistance 0.50/phase and a synchronous reactance of 52/phase. The generator is supplying its rated power at its rated voltage and at a power factor of 0.8 lagging. The rotational loss is 2 kW. Calculate (a) the power developed (b) the power angle, (c) the voltage regulation, and (d) the shaft torque.

Answer 1

Giver-j Rating: 5oo KVA 6,6 KV Y-conhecked = 5.62184. 了 = 131.22 A Pewe facto angle 36·27

Geevted Vollage, 1 - xec 42 83、82-38b"6" xs 12.42 % 와,22'-65 S o2 S.O2 : 688272.62 289278.31 = 399994.3) w 344, 444 KW

(e) Developed pee Cxotatital lossesy) (400-2 318 KK) GO Tsh 72