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Quiz_4 - per unit on 100 MVA base for the entire system...

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The Ohio State University Department of Electrical and Computer Engineering ECE 740  Autumn 2007 Quiz # 4 November 1, 2007 Name (print) ____________________________________________                                          Notice:  There is one problem on the following pages.   Please read the problem carefully. Draw diagrams wherever necessary and show all the steps.  “No aid is given, received or observed”            Signature_____________ 1
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 Grade_____________ Problem # 1: (10 points) Consider the power system given below:  Assume  .  Also, assume transmission line impedances are given in 
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Unformatted text preview: per unit on 100 MVA base ( for the entire system) Assume generation and load schedules are as follows: Bus 1: Load # 1: 4 MVA, pf=0.85 (lagging) Bus 2: G2: 2 MW, pf=0.95 (lagging), X d ”=10% Load # 2: 4 MVA, pf=0.90 (leading) Bus 3: G3: 1 MW, pf=0.95 (leading), X d ”=25% Load # 3: 2 MVA, pf=0.90 (leading) 2 Compute: A) Compute the voltages at Bus 2 and 3 using Gauss-Seidel method assuming initial bus voltages for these buses to be 1 p.u. (Perform only one iteration). B) Mismatch at bus 1 3...
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