Problem 2. A 150-MVA, 220/22-kV, three-phase has the following parameters (in 2): R, = 0.1 R2 = 0.001 Xm= 7800 X, = 0.25 X, = 0.002 R = 30250 %3D The transformer is operating in step-down mode and...

Problem 2. A 150-MVA, 220/22-kV, three-phase has the following parameters (in 2):<br>R, = 0.1<br>R2 = 0.001<br>Xm= 7800<br>X, = 0.25<br>X, = 0.002<br>R = 30250<br>%3D<br>The transformer is operating in step-down mode and delivering hafl of rated load at 22.5kV and 0.86 power<br>factor lagging.<br>a) Determine the equivalent circuit referred to the high-voltage side;<br>b) Find the primary voltage and current;<br>c) Determine the voltage regulation.<br>d) Determine the efficiency.<br>

Extracted text: Problem 2. A 150-MVA, 220/22-kV, three-phase has the following parameters (in 2): R, = 0.1 R2 = 0.001 Xm= 7800 X, = 0.25 X, = 0.002 R = 30250 %3D The transformer is operating in step-down mode and delivering hafl of rated load at 22.5kV and 0.86 power factor lagging. a) Determine the equivalent circuit referred to the high-voltage side; b) Find the primary voltage and current; c) Determine the voltage regulation. d) Determine the efficiency.

Jun 10, 2022

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Problem 2. A 150-MVA, 220/22-kV, three-phase has the following parameters (in 2): R, = 0.1 R2 = 0.001 Xm= 7800 X, = 0.25 X, = 0.002 R = 30250 %3D The transformer is operating in step-down mode and...

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