A 230-kV, three-phase transmission line has a per phase series impedance of -6 per Km and a per phase shunt admittance of y 0.05 + j0.45 siemens per km. The line is 80 km long. Using the nominal π model, determine 73.4 x 10 (a) The transmission line ABCD constants. Find the sending end voltage and cur- rent, voltage regulation, the sending end power and the transmission efficiency when the line delivers (b) 200 MVA, 0.8 lagging power factor at 220 kV. (c) 306 MW, unity power factor at 220 kV

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A 230-kV, three-phase transmission line has a per phase series impedance of .... (please see attached image).

A 230-kV, three-phase transmission line has a per phase series impedance of
-6
per Km and a per phase shunt admittance of y
0.05 + j0.45
siemens per km. The line is 80 km long. Using the nominal π model, determine
73.4 x 10
(a) The transmission line ABCD constants. Find the sending end voltage and cur-
rent, voltage regulation, the sending end power and the transmission efficiency
when the line delivers
(b) 200 MVA, 0.8 lagging power factor at 220 kV.
(c) 306 MW, unity power factor at 220 kV
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Transcribed Image Text

A 230-kV, three-phase transmission line has a per phase series impedance of -6 per Km and a per phase shunt admittance of y 0.05 + j0.45 siemens per km. The line is 80 km long. Using the nominal π model, determine 73.4 x 10 (a) The transmission line ABCD constants. Find the sending end voltage and cur- rent, voltage regulation, the sending end power and the transmission efficiency when the line delivers (b) 200 MVA, 0.8 lagging power factor at 220 kV. (c) 306 MW, unity power factor at 220 kV