Assignment:
Question 1. A three-phase line serves a 54MW load with a .9 lagging power factor at a line voltage of 138KV. The line constants are:
A = D = 1 at 0 degrees
B = 85 ohms At 70 degrees
C = 950 x 10^4 siemens at 90 degrees
Find the line and phase values of voltage and current at the sending end.
Question 2. For the system shown:
G1: 20KV, 250MVA, X = J10%
TI: 20/138KV, 200MVA, X=J15%
T2: A Bank of 3, 1-Phase Devices, each is rated at 15/79.77KV, 250MVA, X=J10%
Draw the per-unit diagram using the generator bases.