Question

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The bus admittance matrix of a three-bus three-line system is
y-jf-15,8,6;8,-18,10;6,10,-13}
If each transmission line between the two buses is represented by an
equivalent a network, the magnitude ofthe shunt susceptance of the
line connecting bus 2 and 3 is
A
3j
B 2)
C 1j​

Answer 1

Answer:

B) 2j

FOR 3 BUS SYSTEM

Y11 = Y11 + Y12 + Y13

Y12 = – Y12 = 10j, Y13 = – Y13 = 5j

⇒ Y11 = – 13j = Y11 + Y12 + Y13

⇒ – 13j = Y11 – 10j – 5j

⇒ Y11 = 2j

Equivalent π network between Bus 1 and Bus 2

Shunt-susceptance, y11 = 2

Explanation:

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