a) draw the reactance diagram based on values in A busbar. U=29 S=30b) while the voltage in B busbar is 13kV, 17MW 0.85 inductive power factor in M1, 8MW 0.9 inductive power factor in M2, what should be the terminal voltage in generator?c) to have a 3 phase fault in B busbar, what should be the fault current? a) Şekilde verilen güç sisteminin A barasında Upaz [kV] ve Spaz [MVA] değerlerini baz alarak “reaktansdiyagramını" çiziniz.b) B barasında gerilim 13 kV iken motor-1 17 MW gücü 0,85 endüktif güç faktörüyle ve motor-2 ise 8 MWgücü 0,9 endüktif güç faktörü ile çekersen generatörün uç gerilimi kaç kV olur, hesaplayınız.c) Motor barasında (B barası) 3 fazlı bir arıza meydana gelmesi durumu için arıza akımı kaç kA olur,hesaplayınız.(Ubaz ve Sbaz değerleri için aşağıdaki tablodan öğrenci numaranıza karşılık verilen değerleri kullanınız.)G (generatör):30 MVA, 20 kV, X = %20oftBT1 (transformatör-1): 35 MVA, 20/220 kV, X = %10T1T2M1T2 (transformatör-2): 30 MVA, 13,2/220 kV, X = %10İletim HattıM1 (motor-1):20 MVA, 13,2 kV, X= %20М2M2 (motor-2):10 MVA, 13,2 kV, X = %20İletim hattı:X = 32 Q

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Answered: reactance diagram

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reactance diagram

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

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ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter15: Residential Air-conditioning Control Systems

Section: Chapter Questions

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Concept explainers

Fault Analysis

In an electrical engineering system, a fault is an abnormal electric current flowing through the system, and fault analysis is the study of these faults. For instance, a short-circuit is a fault where the live wire touches the ground or neutral wire. If a circuit is interrupted by a failure of a current-carrying wire then an open circuit fault occurs. The open-circuit faults are also called series faults. One or more phases or ground may be involved in a three-phase fault or may occur only between two phases. Current flows into the earth in case of a ground fault or earth fault. For most situations, the prospective short circuit current of a fault that is predictable can be calculated. To limit the loss of service because of a failure, the protective devices can detect fault conditions and operate circuit breakers and also other devices. All phases equally can be affected in a poly-phase system which is known as symmetric electrical fault. The asymmetric fault becomes more complicated to analyze if only some phases are affected. By using methods such as symmetrical components, the power system analysis of these types of faults is often simplified. The main objective of power system protection is to design, detect, and interrupt power system faults.

Question

a) draw the reactance diagram based on values in A busbar. U=29 S=30

b) while the voltage in B busbar is 13kV, 17MW 0.85 inductive power factor in M1, 8MW 0.9 inductive power factor in M2, what should be the terminal voltage in generator?

c) to have a 3 phase fault in B busbar, what should be the fault current?

a) Şekilde verilen güç sisteminin A barasında Upaz [kV] ve Spaz [MVA] değerlerini baz alarak “reaktans
diyagramını" çiziniz.
b) B barasında gerilim 13 kV iken motor-1 17 MW gücü 0,85 endüktif güç faktörüyle ve motor-2 ise 8 MW
gücü 0,9 endüktif güç faktörü ile çekersen generatörün uç gerilimi kaç kV olur, hesaplayınız.
c) Motor barasında (B barası) 3 fazlı bir arıza meydana gelmesi durumu için arıza akımı kaç kA olur,
hesaplayınız.
(Ubaz ve Sbaz değerleri için aşağıdaki tablodan öğrenci numaranıza karşılık verilen değerleri kullanınız.)
G (generatör):
30 MVA, 20 kV, X = %20
oft
B
T1 (transformatör-1): 35 MVA, 20/220 kV, X = %10
T1
T2
M1
T2 (transformatör-2): 30 MVA, 13,2/220 kV, X = %10
İletim Hattı
M1 (motor-1):
20 MVA, 13,2 kV, X= %20
М2
M2 (motor-2):
10 MVA, 13,2 kV, X = %20
İletim hattı:
X = 32 Q

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