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EEE 471/591: Power System Analysis [Face-to-Face]
Homework #5
Problem 1 (20 Points)
A 60-Hz, 765-kV, three-phase overhead transmission line has two ACSR 900 kcmil 54/3 conductors per phase. Determine the 60-Hz resistance of this line in Ω/km per phase at 25°C
Problem 2 (20 Points)
A 230-kV, 60-Hz, three-phase completely transposed overhead line has one ACSR 954 kcmil conductor per phase and flat horizontal phase spacing, with 10m between adjacent conductors. Determine the inductance in H/m and the inductive reactance in Ω/km.
Problem 3 (20 Points)
Calculate the inductive reactance in Ω/km of a bundled 500-kV, 60-Hz, three-phase completely transposed overhead line having three ACSR 1113 kcmil conductors per bundle, with 0.5m between conductors in the bundle. The horizontal phase spacings between bundle centers are 7m, 7m, and 14m.
Problem 4 (20 Points)
A 230-kV, 60-Hz, three-phase completely transposed overhead line has one ACSR 795 kcmil conductor (the Condor conductor) per phase and flat horizontal phase spacing, with 7.7m between adjacent conductors. Calculate the capacitance-to-neutral in F/m and the admittance-to-neutral in S/km for the three-phase line.
Problem 5 (20 Points)
A bundled 500-kV, 60-Hz, three-phase completely transposed overhead line has three ACSR 1351 kcmil conductors per bundle, with 0.8m between conductors in the bundle. The horizontal phase spacings between bundle centers are 7, 7, and 14m. Calculate the capacitance-to-neutral in F/m and the admittance-to-neutral in S/km for the line.