Question

Q2. (a) For the following system, please draw the complete positive-sequence, negative-sequence and zero-sequence network connection (phase A) for the double line-to-ground faults (phases B and C to ground faults) at bus M. XP XLu Eaz EGs Figure Q2. (b) For double line-to-ground faults at point M, please find the positive-sequence cuurent of phase A. The parameters are as follows: Prefault voltage Egi-120, Ea-10 E-10 (Per Unit) Parameters (Per Unit): Generators: Xa-X,-X,o = 0.2 , Xa,' = X,-= XG2-0.2 Transformers. XT-X,-= X, 0.6 , X,+ = X,-= X,20 = 0.5 Yp 0.5

Answer 1

A. メし、 %" egaHve Seguene "nactarq.ofke

レ2. Sinsie Stne (J1.a)//QI.a) |Юр.Đ Jl.at)la

is Same. so and nestve Sezuecet Zero Sequence pe danc 3メ T5

木ㄚ ·クリ 003 、リリ ㄑㄧㄨ )3 o-aaa) "(ja)

b for Aouhle tine to rou faaL I-G 0.3 Jo 3 JXa Jyo Wyeni fotutve Sesuence Curest of phase A Fa au 0.42