EEET 4074

Question (2) Using the power flow results (voltage magnitudes and angles) and line data,
calculate the complex power generated by the swing generator. We need to show how we determine the complex power at both ends of tap changing transformer connected between buses
5 and 6. Then need to compare the calculated results with the corresponding simulation results
obtained in part 1 and find the errors in percentage.

Question (3) If I am not wrong, lecture want to run the power flow program and record the corresponding reactive power of the generation, after vary the voltage magnitude of P-V bus 2 from 0.90 pu to 1.10 pu (with a suitable increment)and the reactive power limits of the bus (say, from -500 to +500 MVAr)and then plot the variation of reactive power against terminal voltage of the generator.


Question (4) You need describe a common method of improving voltage of a load bus with suitable simulation results that what assignment was mentioned. (The voltage magnitude of a load bus (or a P-Q bus) depends on load of the bus. Select a particular load bus and increase the load of the bus at a constant power factor (0.8 lagging) in step (start at 10 MVA) and obtain the corresponding voltage from power flow solutions. Continue to increase the load until the voltage drops to 0.8 pu. Plot the load voltage against load MVA of the bus).

Question (5) We need to investigate the voltage profile of the system during peak and off peak periods after the system load is decreased by 50% during off-peak period and increased
by 75% during peak period.