e changes the system was simulated without any problem during the two hours. The diagram of the second solution after two hours simulation is : Second solution after two hours simulationComparison and DiscussionThe main point that the engineers care about is the cost. My comparison will consider this point. We can say that solution one better than solution two because:1- we removed complete transmission line that was in the original system(2-4).this means we loss the cost of that line.2- By removing line 2-4 the power will be supplied to bus 2 and 4 by the other lines, which means more power will be transmitted by these lines, which my overloaded them.3- In the second solution the capacitor banks have higher rating value (100 MVAR) then the first one (80 MVAR)4- If we want to change the simulation time ,we will find the first solution till take more time to stop working than the second.Conclusion:The power flow studies are very important for any power system that will be built. And the best way to get the right solution is the computer program such as (PWSP).This way we can save a lot of many and time. ...
