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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
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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A radial transmission line system can be represented by a generating source connected to a three-phase transformer - (11KV/132k, 50MVA, 10 % reactance) to which an overhead transmission line (100 Q) is connected. Connected to the other end of the transmission line is another three-phase transformer (132kV/33KV,50MVA, 12% reactance). This three-phase transformer located at a 33kV substation supplies a load of 30MW at a power factor of 0.8 lagging. The voltage level of the substation is to be maintained at 30kV. Use a base of 100MVA and 33kV. Use the above information to answer Q12 – Q16 12. Calculate the per unit value of reactance of the sending end transformer. c) 0.30 13. Calculate the per unit value of reactance of the receiving end transformer. a) 0.20 b) 0.25 d) 0.343 e) none a) 0.32 b) 0.24 c) 0.41 d) 0.51 e) none 14. Calculate the per unit value of the reactance of the transmission line. a) 0.864 b) 0.575 c) 0.768 d) 0.683 e) none
Transcribed Image Text:A radial transmission line system can be represented by a generating source connected to a three-phase transformer - (11KV/132k, 50MVA, 10 % reactance) to which an overhead transmission line (100 Q) is connected. Connected to the other end of the transmission line is another three-phase transformer (132kV/33KV,50MVA, 12% reactance). This three-phase transformer located at a 33kV substation supplies a load of 30MW at a power factor of 0.8 lagging. The voltage level of the substation is to be maintained at 30kV. Use a base of 100MVA and 33kV. Use the above information to answer Q12 – Q16 12. Calculate the per unit value of reactance of the sending end transformer. c) 0.30 13. Calculate the per unit value of reactance of the receiving end transformer. a) 0.20 b) 0.25 d) 0.343 e) none a) 0.32 b) 0.24 c) 0.41 d) 0.51 e) none 14. Calculate the per unit value of the reactance of the transmission line. a) 0.864 b) 0.575 c) 0.768 d) 0.683 e) none
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