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categoryهندسة كهربائية
schoolبكالوريوس
event_available2026-07-13
السؤال
Transcribed Image Text:
3.6 Figure 3.27 shows a rectangle-triangle area that is being fed from a
source at point X. Both areas have a load density of 6000 kVA/mile² with
loads being uniformly distributed as denoted by the dashed laterals.
X
1 mile
1.5 miles
1.5 miles
FIGURE 3.27
Rectangular-triangular area of Problem 3.6.
Z
2000 kVA
In addition to the uniformly distributed loads, there is a "spot load" at
point Z that is 2000 kVA. The Kdrop factor for the primary main conductors
is 0.00022626% drop/kVA-mile and the Krise factor for the primary main
conductors is 0.00028436% rise/kvar-mile.
a. Determine the percent drop to point Z.
b. Determine the kvar rating (to the nearest 300 kvar/phase) for a capac-
itor bank to be placed at point Y in order to limit the voltage drop to
Z to 3%.
c. With the capacitor in place, what now is the percent drop to
point Z?
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