Q2. (total marks 20) a) Describe the type of faults which may occur on a power system network and state if they are symm

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Q2 Total Marks 20 A Describe The Type Of Faults Which May Occur On A Power System Network And State If They Are Symm 1 (59.35 KiB) Viewed 16 times

Q2. (total marks 20) a) Describe the type of faults which may occur on a power system network and state if they are symmetrical or unsymmetrical. (5 Marks) b) Sketch and explain the symmetrical components phase sequence and define and explain the purpose of the operator 'a'. (7 Marks) c) Obtain the symmetrical components Vao, Va1, Va2 for the set of unbalanced voltages: Va = 250 115°, Vo = 200 270°, Vc = 100 _ -20°. (5 Marks) d) Obtain the original unbalanced phasors la, Ib, Ic for the symmetrical components of a set of unbalanced three phase currents: lao, la1, la2. I ao = 25 2-25°, lai= 15 262°, la2= 8 245° (3 Marks)