Q. 74 The initial accelerating power (in pu) will be A generator feeds power to an infinite bus through a double circuit transmission line. A 3-phase fault occurs at the middle point of one of the lines. The infinite bus voltage is 1 pu, the transient internal voltage of the generator is 1.1 pu and the equivalent transfer admittance during fault is 0.8 pu. The 100 MVA generator has an inertia constant of 5 MJ/MVA and it was delivering 1.0 pu power prior of the fault with rotor power angle of
. The system frequency is 50 Hz
(A) 1.0
(B) 0.6
(C) 0.56
(D) 0.4
Answer:(C)
Explanation:
