A 500-kV, 60-Hz, three-phase line has per-distance parameters of z= 0.02 + j0.335 2/km and y-...
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A 500-kV, 60-Hz, three-phase line has per-distance parameters of z= 0.02 + j0.335 2/km and y- j4.807 µS/km. It is 300-km long. Calculate: (a) The characteristic impedance Ze (b) The yl (c) The exact (distributed model) ABCD parameters for this line. Assume a 50C° conductor temperature. (d) The lump model ABCD parameters. Using exact ABCD and at full load, the line delivers 1500 MW at 0.9 power factor and at 480 kV. Calculate (e) The sending-end voltage, (f) The sending-end current, (g) The full-load line losses (h) The percent voltage regulation. When identical shunt reactor are installed at both ends of the line, providing 50% total shunt compensation. The reactors are removed at full load. Recalculate: (i) The sending-end voltage (i) The percent voltage regulation A 500-kV, 60-Hz, three-phase line has per-distance parameters of z= 0.02 + j0.335 2/km and y- j4.807 µS/km. It is 300-km long. Calculate: (a) The characteristic impedance Ze (b) The yl (c) The exact (distributed model) ABCD parameters for this line. Assume a 50C° conductor temperature. (d) The lump model ABCD parameters. Using exact ABCD and at full load, the line delivers 1500 MW at 0.9 power factor and at 480 kV. Calculate (e) The sending-end voltage, (f) The sending-end current, (g) The full-load line losses (h) The percent voltage regulation. When identical shunt reactor are installed at both ends of the line, providing 50% total shunt compensation. The reactors are removed at full load. Recalculate: (i) The sending-end voltage (i) The percent voltage regulation
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