1000 KVA 11kV/415V RTR = 1.%, XTR -6.0% 200 KVAR 16 -C VLL = 11 kV, 50 Hz MVASc = 200 X/R = 2.4 Linear and nonlinear plant loads Figure Q3(c)

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(c) Figure Q3(c) shows the single-line diagram of an industrial plant. The plant is supplied
by 11 kV, 50 Hz three-phase distribution feeder from the utility. The short-circuit data
on the 11kV system indicates a three-phase short circuit availability of 20 MVA at
11 kV with an X/R ratio of 2.4. The step-down transformer is rated 2000 KVA,
11kV/415 V and has percentage resistance and reactance of RTR = 1% and XTR 6.5%,
respectively. A Y-connected 200 kVAR capacitance bank is connected to the 415 V
busbar for power factor correction. Determine the parallel resonant frequency of the
system.
Transcribed Image Text:(c) Figure Q3(c) shows the single-line diagram of an industrial plant. The plant is supplied by 11 kV, 50 Hz three-phase distribution feeder from the utility. The short-circuit data on the 11kV system indicates a three-phase short circuit availability of 20 MVA at 11 kV with an X/R ratio of 2.4. The step-down transformer is rated 2000 KVA, 11kV/415 V and has percentage resistance and reactance of RTR = 1% and XTR 6.5%, respectively. A Y-connected 200 kVAR capacitance bank is connected to the 415 V busbar for power factor correction. Determine the parallel resonant frequency of the system.
1000 KVA
11kV/415V
RTR = 1.%,
XTR =6.0%
200
KVAR
VLL = 11 kV, 50 Hz
MVASc = 200
X/R = 2.4
Linear and nonlinear
plant loads
Figure Q3(c)
Transcribed Image Text:1000 KVA 11kV/415V RTR = 1.%, XTR =6.0% 200 KVAR VLL = 11 kV, 50 Hz MVASc = 200 X/R = 2.4 Linear and nonlinear plant loads Figure Q3(c)
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