Power System Analysis and Design (MindTap Course List)
Power System Analysis and Design (MindTap Course List)
6th Edition
ISBN: 9781305632134
Author: J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher: Cengage Learning
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[画像:Given the one-line diagram of a three-phase power system. By selecting a system common base of Sb = 100 MVA and Vb = 20kV on the generator side, calculate all impedances in per-unit calculated for the new system base. Show the base values for each zone. Neglect the Load. Please write the per-unit impedance on the figure or next to the original Impedance and NO credit will be given if your work is not shown PLEASE Underline or CIRCLE YOUR ANSWERS. Show the base values for each zone and which equation you use to calculate the new impedance/reactance for each item! Lines 1 and 2 have series reactances of 10 and 25 ohms respectively. The data is given as follows: G: 90 MVA TI: 50 MVA 72: 40 MVA T3: 40 MVA T4: 40 MVA 22 kV 22/220 kV 220/11 kV 22/110 kV x = 0.18 per unit x = 0.10 per unit x = 0.06 per unit x = 0.064 per unit 110/11 kV x = 0.08 per unit M: 66.5 MVA 10.45 kV x = 0.185 per unit 2 3 Line 1 220 kV t G M T1 5 6 t Lino 2 Load 110 kV]
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Transcribed Image Text:Given the one-line diagram of a three-phase power system. By selecting a system common base of Sb = 100 MVA and Vb = 20kV on the generator side, calculate all impedances in per-unit calculated for the new system base. Show the base values for each zone. Neglect the Load. Please write the per-unit impedance on the figure or next to the original Impedance and NO credit will be given if your work is not shown PLEASE Underline or CIRCLE YOUR ANSWERS. Show the base values for each zone and which equation you use to calculate the new impedance/reactance for each item! Lines 1 and 2 have series reactances of 10 and 25 ohms respectively. The data is given as follows: G: 90 MVA TI: 50 MVA 72: 40 MVA T3: 40 MVA T4: 40 MVA 22 kV 22/220 kV 220/11 kV 22/110 kV x = 0.18 per unit x = 0.10 per unit x = 0.06 per unit x = 0.064 per unit 110/11 kV x = 0.08 per unit M: 66.5 MVA 10.45 kV x = 0.185 per unit 2 3 Line 1 220 kV t G M T1 5 6 t Lino 2 Load 110 kV
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