the question in the photoShow transcribed image text
the question in the photoShow transcribed image text The generator in Figure 3 is initially operating in the steady-state condition given by its internal voltage E = 1.155 19.73 degree per unit when a temporary three-phase to ground short circuit occurs on line 1-3 at bus 1, shown as point F in Figure 3. Determine the critical clearing time allowable for circuit breakers B13 and B22 to permanently open to clear the fault. Use the equal-area criterion. Assume p m = 1.0 per unit and omega p.s.(t)clear = 1.0 throughout the disturbance.