Reconsider Problem 3.64 with the change that now T b includes both a transformer of the same turns ratio as T a and a regulating transformer with a 4 ° phase shift. On the base of T a , the impedance of the two comp onents of T b is j O.1 per unit. Determine the complex power in per unit transmitted to the load through each transformer. Comment on how the transformers share the real and reactive pors.
Reconsider Problem 3.64 with the change that now T b includes both a transformer of the same turns ratio as T a and a regulating transformer with a 4 ° phase shift. On the base of T a , the impedance of the two comp onents of T b is j O.1 per unit. Determine the complex power in per unit transmitted to the load through each transformer. Comment on how the transformers share the real and reactive pors.
Solution Summary: The author explains the complex power in per unit supplied to the load through each transformer and the process of sharing real and reactive powers.
Reconsider Problem 3.64 with the change that now
T
b
includes both a transformer of the same turns ratio as
T
a
and a regulating transformer with a
4
°
phase shift. On the base of
T
a
, the impedance of the two comp onents of
T
b
is jO.1 per unit. Determine the complex power in per unit transmitted to the load through each transformer. Comment on how the transformers share the real and reactive pors.
Practice1
A single-phase step-down transformer of 83 kVA, nominal voltages 24kV/230 V, frequency 60 Hz is available.The following test parameters are available:Pfe = 216 W, Io = 2% Pcc = 1083 W, Vcc = 4%
Determine:a. Parameters Rcc, Xcc and Rfe of the equivalent circuit referring to the secondary.b. Relative voltage drops. εcc, εrcc, εxcc
A single-phase step-down transformer of 83 kVA, nominal voltages 24kV/230 V, frequency 60 Hz is available.The following test parameters are available:Pfe = 216W, Io = 2%, Pcc = 1083W, Vcc = 4%
Determine:
If the transformer is connected to 24 kV, a load Zc, fp = 0.866 in arrears, is installed in the secondary transformer, which consumes the nominal current. Calculate:• Transformer voltage regulation (perform calculations by PU's)• Maximum efficiency.
The magnetic circuit shown in the figure is made of TRAN-COR material, the flow magnetic power on the right arm (BCDE) is 6 x 10 -4 Wb. (disregard marginal effects anddispersion)
Calculate the current in the 200-turn coil
Chapter 3 Solutions
MindTap Engineering for Glover/Overbye/Sarma's Power System Analysis and Design, 6th Edition, [Instant Access], 1 term (6 months)
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.