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3.15. The three-phase power and line-line ratings of the electric power system shown in Figure 3.34 are given below. Ti V₂ OBE G FIGURE 3.34 1 Line 2 T2 Vm 38 M

3.15. The three-phase power and line-line ratings of the electric power system shown in Figure 3.34 are given below. Ti V₂ OBE G FIGURE 3.34 1 Line 2 T2 Vm 38 M

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
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3.15. The three-phase power and line-line ratings of the electric power system shown in Figure 3.34 are given below. Τ V₂ OBE G 1 FIGURE 3.34 One-line diagram for Problem 3.15 G₁: 60 MVA T₁: 50 MVA 50 MVA T2: M: 43.2 MVA Line: Line 20 kV 20/200 kV 200/20 kV 18 KV 200 kV 2 X = 9% X = 10% X = 10% X = 8% Z= 120+ j200 T2 38 Vm M (a) Draw an impedance diagram showing all impedances in per-unit on a 100-MVA base. Choose 20 kV as the voltage base for generator.
Transcribed Image Text:3.15. The three-phase power and line-line ratings of the electric power system shown in Figure 3.34 are given below. Τ V₂ OBE G 1 FIGURE 3.34 One-line diagram for Problem 3.15 G₁: 60 MVA T₁: 50 MVA 50 MVA T2: M: 43.2 MVA Line: Line 20 kV 20/200 kV 200/20 kV 18 KV 200 kV 2 X = 9% X = 10% X = 10% X = 8% Z= 120+ j200 T2 38 Vm M (a) Draw an impedance diagram showing all impedances in per-unit on a 100-MVA base. Choose 20 kV as the voltage base for generator.
d) TRANSFORMER ANALYSIS Type of parameters for input To obtain equivalent circuit from tests To input individual winding impedances To input transformer equivalent impedance To quit Select number of menu --> 2 Shunt branch ref. to LV side Shunt branch ref. to HV side Rc = 10.000 ohm Rc = 1000.000 ohm Xm = 15.000 ohm Xm = 1500.000 ohm Enter Transformer rated power in kVA, S = 150 Enter rated low voltage in volts = 240 Enter rated high voltage in volts = 2400 Enter LV winding series impedance R1+j*X1 in ohm=0.002+j*.0045 Enter HV winding series impedance R2+j*X2 in ohm=0.2+j*0.45 Enter 'Iv' within quotes for low side shunt branch or enter 'hv' within quotes for high side shunt branch -> 'hv' Shunt resistance in ohm (if neglected enter inf) = 1000 Shunt reactance in ohm (if neglected enter inf) = 1500 Series branch ref. to LV side Series branch ref.to HV side Ze = 0.0040 + j 0.0090 ohm Ze = 0.4000 + j 0.90 ohm Select Hit return to continue Enter load KVA, S2 = 150 Enter load power factor, pf = 0.8 1230
Transcribed Image Text:d) TRANSFORMER ANALYSIS Type of parameters for input To obtain equivalent circuit from tests To input individual winding impedances To input transformer equivalent impedance To quit Select number of menu --> 2 Shunt branch ref. to LV side Shunt branch ref. to HV side Rc = 10.000 ohm Rc = 1000.000 ohm Xm = 15.000 ohm Xm = 1500.000 ohm Enter Transformer rated power in kVA, S = 150 Enter rated low voltage in volts = 240 Enter rated high voltage in volts = 2400 Enter LV winding series impedance R1+j*X1 in ohm=0.002+j*.0045 Enter HV winding series impedance R2+j*X2 in ohm=0.2+j*0.45 Enter 'Iv' within quotes for low side shunt branch or enter 'hv' within quotes for high side shunt branch -> 'hv' Shunt resistance in ohm (if neglected enter inf) = 1000 Shunt reactance in ohm (if neglected enter inf) = 1500 Series branch ref. to LV side Series branch ref.to HV side Ze = 0.0040 + j 0.0090 ohm Ze = 0.4000 + j 0.90 ohm Select Hit return to continue Enter load KVA, S2 = 150 Enter load power factor, pf = 0.8 1230
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