3. Consider the 4-bus transmission network on the next page. The admittance for each transmission line is 0.5 - j 10 p. u. The load at bus at bus 2 is 4.5+ j 1.5 p. u. The load at bus 4 is 4.0 + j 1.0 p. u. There is no shunt capacitor at any bus. The voltage synchrophasors are given in the table. (a) How much is the active power and reactive power generation of each generator? (b) How much is the total active power loss on transmission lines? (c) How much is the total reactive power loss on transmission lines? 1134913 V, 20 V, 20, 1124912 1142014 1342034 V 20 V20 1244924 Bus # 1 2 3 4 Hint: You need to use nonlinear AC power flow equations in this question. Voltage Phasor (p.u.) 1.0332238.8884 0.9974231.5332 1.0499237.0645 0.9755228.3416 Lab 7 - Power Flow and Voltage Regulation of a Simple Transmission Line (15 pts) 1. What happens to real and reactive power when a load is applied? Why is modeling a transmission line so important in power systems? 2. 3. What assumption about traditional circuits is not true for transmission line circuits? 4. Draw the model circuit for a transmission line and label the parts. Lab 8 - Phase Angle and Voltage Drop Between Sender and Receiver (10 pts) 1. Which active element is used for boosting power factor and why? 2. Is it economically advisable to achieve a power factor of 1.0? Why or why not? 3. Would you add capacitors or inductors along a transmission line to improve power de Why?