Two power system areas operating at a nominal frequency of 60 Hz are connected with a tie line, and have the following characteristics: Area 1: R1 = 0.015 pu and D1 = 0.8 pu on a base of 1500 MVA Area 2: R2 = 0.03 pu and D2 = 0.9 pu on a base of 500 MVA The power flow direction on the tie line is from Area 1 to Area 2. Using a common base of 1500 MVA, what is the per-unit steady-state frequency change (Aw) for a load increase of 150 MW in Area 1? Select one: O a. 1.4822 x 10-³ pu O b.-0.8763 x 10-² pu O c. None of these O d. - 1.2677 x 10-³ pu

Two power system areas operating at a nominal frequency of 60 Hz are connected with a tie line, and have the following characteristics: Area 1: R1 = 0.015 pu and D1 = 0.8 pu on a base of 1500 MVA Area 2: R2 = 0.03 pu and D2 = 0.9 pu on a base of 500 MVA The power flow direction on the tie line is from Area 1 to Area 2. Using a common base of 1500 MVA, what is the per-unit steady-state frequency change (Aw) for a load increase of 150 MW in Area 1? Select one: O a. 1.4822 x 10-³ pu O b.-0.8763 x 10-² pu O c. None of these O d. - 1.2677 x 10-³ pu

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

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.9MCQ: Match the following: (i) Hysteresis loss (a) Can be redud by constructing the core with laminated...

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Two power system areas operating at a nominal frequency of 60 Hz are connected with a tie line, and have the following characteristics: Area 1: R1 = 0.01 pu and D1 = 0.8 pu on a base of 1200 MVA Area 2: R2 = 0.02 pu and D2 = 1 pu on a base of 600 MVA The power flow direction on the tie line is from Area 1 to Area 2. Using a common base of 1000 MVA, what is the change in prime mover power (in MW) in Area 2 (APmech2) for a load increase of 125 MW in Area 1? Select one: O a. 51.67 MW O b. None of these c. 24.74 MW O d.204.24 MW
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Two power system areas operating at a nominal frequency of 60 Hz are connected with a tie line, and have the following characteristics: Area 1: R1 = 0.02 pu and D1 = 1 pu on a base of 1200 MVA Area 2: R2 = 0.03 pu and D2 = 0.8 pu on a base of 700 MVA The power flow direction on the tie line is from Area 1 to Area 2. Using a common base of 1000 MVA, what is the change in tie flow (in MW) for a load increase of 200 MW in Area 1? Select one: a.-56.16 MW O b. None of these O c.-143.84 MW O d.-38.02 MW <
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