Knowledge in Operation and Control of Modern Power Systems.
Given a single line diagram of a 14 BUS system and the power flow data given answer 5 questions.
1)Obtain the base-case power flow solution using Newton-Raphson (NR) method and
show the voltage profile of the system.
2)Using the power flow results (voltage magnitudes and angles) and line data,
calculate the complex power flow at both ends of the tap changing transformer
connected between buses 4 and 7. Compare the calculated results with the
corresponding simulation results obtained in part 1 and find the errors in
3)The reactive power of a voltage-controlled bus (or a P-V bus) depends on the
specified voltage magnitude of the bus. Vary the voltage magnitude of P-V bus 3
from 0.90 pu to 1.10 pu (with a suitable increment) and run the power flow program
and record the corresponding reactive power of the generation. You may relax the
reactive power limits of the bus (say, from -500 to +500 MVAr), if necessary. Plot the
variation of reactive power against terminal voltage of the generator. At the end of
this part, reset the reactive power limits of the bus to the original values.
4)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 (0.85 lagging) in step (start at 10 MVA) and obtain the corresponding voltage
from power flow solutions. Continue to increase the load until the voltage of the bus
decreases to 0.8 pu. Plot the load voltage against load MVA of the bus. Suppose a
100 MVAr shunt capacitor bank is connected to the load bus when its voltage is
decreased to 0.8 pu, determine the improvement of voltage of bus using suitable
simulations. At the end of this part, reset the data to the original values.
5)Consider the system load is decreased to 60% during off-peak period and increased
to 140% during peak period. Compare the voltage profile of the system during peak
and off-peak periods.
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Hi, I am an electrical engineer with specialization in power engineering. I can do this using Power World Simulator software. Looking forward to hearing from you. Regards
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