Question 1: The long transmission line A (a line from A.A to kombolicha) is connected to 230
KV kombolicha substation through very high substation switchgear transformer impedance at
point B then the power is transmitted through another long transmission line BC and connected
to Alamata 230 KV HV substation with the aid of another high switchgear transformer
impedance. The power is then transmitted to the last point through another long transmission line
and terminated at Mekele substation and its end-terminal is connected the infinite line with surge
impedance as shown below. Find the magnitude of second voltage step occurring at the receiving
end (Vr) using the Bewley lattice diagram if a rectangular wave voltage of 30 kV magnitude
from infinite length is initiated in A and travels to the receiving end
K1=0.9 K2= 0.8 K3=0.7
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Get Help Now!Transmission line A Transformer Transmission line
ZA= 450 Ω ZAB=80 Ω ZBC=200 Ω ZCD=50 Ω ZE=450 Ω
A B C D
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