Question

3.6 Show a source at point X. Both areas have a load density of 6000 kVA/mile, with loads being uniformly distributed as denoted by the dashed Jaterals, In addi- tion to the uniformly distributed loads, there is a "spot load" at point Z that is 2000 kV A. The dep factor for the primary main conductors is 000 2262696 n in Figure 3.27 is a rectangle-triangle area that is being fed from drop/kVA-mile, 1.5 mile 1.5 mile 2000 2000 KVA ICURE 3.27n formla decrease Rectangular-triangular area of Problem 3.6. 1. Determine the percent drop to point Z.

Answer 1

Given diagram is a rectangle triangle area that is being fed from a source at point x. Both areas have a load density of 6000 kvA/mile^2 In addition to the uniformly distributed loads, there is a spot load at point Z that is 2,000 KVA The loop factor for the primary conductors = 0.00022626% Total KVA up to Z can be determined by the formula KVA factor [Area of rectangle + Area of triangle] Area of rectangle = A = wl = 15 times 1 rightarrow 1.5 Area of triangle 1/2 hh = 1.5 times 1 times 1/2 = 0.75 KvA factor [1.5 + 0.75] k_VA rightarrow 6000[1.5 + 0.75] k_VA rightarrow 6000 [2.25] k_VA rightarrow 13,500 KvA we already know that percent drop to point Z = k drop * KvA mile rightarrow (a) But Total spot load Z = 2000 KvA KvA factor + spot load 13,500 + 2000 = 15,500.

Therefore the percent drop for point Z = 9.16353.