Two balanced three-phase loads that are connected in parallel are fed by a three-phase line having a series impedance of ( 0.4 − j 2.7 ) Ω per phase. One of the loads absorbs 560 kVA at 0.707 power factor lagging, and the other 132 kW at unity power factor. The line-to-line voltage at the load end of the line is 220 3 V . Compute (a) the line-to-line voltage at the source end of the line. (b) the total real and reactive power losses in the three-phase line, and (c) the total three-phase real and reactive power supplied at the sending end of the line. Check that the total three-phase complex power delivered by the source equals the total three-phase comp lex power absorbed by the line and loads.
Two balanced three-phase loads that are connected in parallel are fed by a three-phase line having a series impedance of ( 0.4 − j 2.7 ) Ω per phase. One of the loads absorbs 560 kVA at 0.707 power factor lagging, and the other 132 kW at unity power factor. The line-to-line voltage at the load end of the line is 220 3 V . Compute (a) the line-to-line voltage at the source end of the line. (b) the total real and reactive power losses in the three-phase line, and (c) the total three-phase real and reactive power supplied at the sending end of the line. Check that the total three-phase complex power delivered by the source equals the total three-phase comp lex power absorbed by the line and loads.
Solution Summary: The author explains the line-line voltage at the source end and the expression for the per phase current.
Two balanced three-phase loads that are connected in parallel are fed by a three-phase line having a series impedance of
(
0.4
−
j
2.7
)
Ω
per phase. One of the loads absorbs 560 kVA at 0.707 power factor lagging, and the other 132 kW at unity power factor. The line-to-line voltage at the load end of the line is
220
3
V
. Compute (a) the line-to-line voltage at the source end of the line. (b) the total real and reactive power losses in the three-phase line, and (c) the total three-phase real and reactive power supplied at the sending end of the line. Check that the total three-phase complex power delivered by the source equals the total three-phase comp lex power absorbed by the line and loads.
Home Works
the following networks, determine the total current:-
4k
Ω
12ΚΩ
24ΚΩ
8k
72V
9k
3k
Ω
Ω
Ω
120
6k
Ω
Answer the question one and two step by step with drawing both of using by hand not Ai
I need expe
Part c Assuming no leakage current, calculate the V
min
OH of the inverter. If,
instead, there is a leakage current with equivalent resistance of 3 MΩ
when VGS < VT , determine the adjusted V
min
OH . Calculate the power lost
when Vi =
VT
2
in these circumstances.
Chapter 2 Solutions
Power System Analysis and Design (MindTap Course List)
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