- A 400kv 50hz 600km Long Symmetrical Line Is Operated At The Load Voltage A What Is The Theoretical Maximum Power Ca 1 (126.57 KiB) Viewed 51 times
A 400kV, 50Hz, 600km long symmetrical line is operated at the load voltage. (a) What is the theoretical maximum power carried by the line? What is the midpoint voltage corresponding to this condition? (b) A series capacitor is connected at the midpoint of the line to double the power transmitted. What is its reactance? (c) A shunt capacitor of value 450 ohms is connected at the midpoint of the line. If the midpoint voltage is 0.9, compute the power flow in the line corresponding to this operating point Data: 1 mH/km, c= 11.1x10-° F/km 1 1 1 1 A SSSC is connected the midpoint of the lossless, 600km long described. At operating angle of 8 = 30', the current in the line (at the midpoint) is same as the current in the line when a series capacitor of the magnitude calculated is connected. (a) Compute the reactive voltage (Vr) injected (b) With the constant reactive voltage calculated in (a) what is the maximum power flow in the line? what is the value of 8 at which this 1 1 1 1 1 occurs? 1 1 1 1 (c) Compute the power flow at 8 =0. What are the line voltage at the two i 1 1 1 terminals of the SSC ?