A 3-ph, double circuit O.H.T.L, 420 kV, 350 km, 50 Hz has a configuration as shown in the figure below where each phase in the double circuit has a double bundle with a spacing of 24 cm between the two conductors in the bundle Each conductor in the bundle has a diameter of 0.115 ft and a geometric mean radius (Ds = 1.7 cm). Calculate: [10] 1- Inductance per phase per km and total inductive reactance of this T.L. 2- Capacitance per phase per km and total capacitive reactance of this T.L. 3- Total charging current.
A 3-ph, double circuit O.H.T.L, 420 kV, 350 km, 50 Hz has a configuration as shown in the figure below where each phase in the double circuit has a double bundle with a spacing of 24 cm between the two conductors in the bundle
Each conductor in the bundle has a diameter of 0.115 ft and a geometric mean radius (Ds = 1.7 cm). Calculate: [10]
1- Inductance per phase per km and total inductive reactance of this T.L.
2- Capacitance per phase per km and total capacitive reactance of this T.L.
3- Total charging current.
4- Total MVAR generated by the capacitive effect.
5- This T.L. is required to supply 260MVA at 0.85 lag P.f. at 420 kV, assuming that this load is divided equally between these two circuits, find the voltage drop across this T.L (ignore capacitive effect in the calculation).
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