All questions please. Thank you Question 1a) Draw impedance diagram in per unit, by using 100-MVA base. Select 20kV as thebase voltage for generator section. Use parameter of equipment for the singlediagram shown in Figure 1, and specification as per Table 1. Assume the length oftransmission line is in the range of value in the table.T1T2VmLineGMFigure 1: Single line DiagramTable 1: Equipment Rating SpecificationNo EquipmentSpecification1Motor Load18 kV, 50 MW, power factor = 0.8 ~ 0.92Transformer 2200/20 kV, 50 MVA, X = 10%Transmission Line200 kV, Length = 4km - 15km, Z = 0.06 + j0.06 Q/m4Transformer 120/200 kV, 100 MVA, X = 5%5Generator 120 kV, 70 MVA, X = 9%b) The motor is drawing 45 MVA with lagging power factor in the range of 0.8~0.9 ata line-to-line terminal voltage of 18 kV. Determine the terminal voltage and theinternal emf of the generator in per unit and in kV.c) As an electrical engineer in one of the utility companies, you have been given asingle line diagram shown in Figure 2. Your specific task is to determine the phasorvalues of the voltage at load buses 2 (P-Q buses) accurate to 4 decimal valuesusing Gauss-Siedel iteration up to three iterations in. Assume the power factor forload at bus 2 is in the range of 0.85 ~ 0.95.Z12 = 0.02 + j0.04Slack1S2 = 280 MWFigure 2: Single line diagram

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a) Draw impedance diagram in per unit, by using 100-MVA base. Select 20kV as the base voltage for generator section. Use parameter of equipment for the single diagram shown in Figure 1, and specification as per Table 1. Assume the length of transmission line is in the range of value in the table. T1 T2 Vm 1 Line 2 G M Figure 1: Single line Diagram Table 1: Equipment Rating Specification No Equipment Specification 1 Motor Load 18 kV, 50 MW, power factor = 0.8 - 0.9 2 Transformer 2 200/20 kV, 50 MVA, X = 10% Transmission Line 200 kV, Length = 4km - 15km, Z = 0.06 + j0.06 Q/m 4 Transformer 1 20/200 kV, 100 MVA, X = 5% Generator 1 20 kV, 70 MVA, X = 9% b) The motor is drawing 45 MVA with lagging power factor in the range of 0.8~0.9 at a line-to-line terminal voltage of 18 kV. Determine the terminal voltage and the internal emf of the generator in per unit and in kV.

a) Draw impedance diagram in per unit, by using 100-MVA base. Select 20kV as the base voltage for generator section. Use parameter of equipment for the single diagram shown in Figure 1, and specification as per Table 1. Assume the length of transmission line is in the range of value in the table. T1 T2 Vm 1 Line 2 G M Figure 1: Single line Diagram Table 1: Equipment Rating Specification No Equipment Specification 1 Motor Load 18 kV, 50 MW, power factor = 0.8 - 0.9 2 Transformer 2 200/20 kV, 50 MVA, X = 10% Transmission Line 200 kV, Length = 4km - 15km, Z = 0.06 + j0.06 Q/m 4 Transformer 1 20/200 kV, 100 MVA, X = 5% Generator 1 20 kV, 70 MVA, X = 9% b) The motor is drawing 45 MVA with lagging power factor in the range of 0.8~0.9 at a line-to-line terminal voltage of 18 kV. Determine the terminal voltage and the internal emf of the generator in per unit and in kV.

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter9: Unsymmetrical Faults

Section: Chapter Questions

Problem 9.33P

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