An Australian power transmission line is designed to deliver 100 MVA at 6.6 kV over a distance of 100 km. The total transmission line loss is not to exceed 2.5% of the rated line MVA. The magnitude of the leakage current due to the capacitive effect is 0.291 A. In this transmission system, you need to reduce this capacitive effect at least by 50%. In this situation, what type of compensation do you need? At the same time, you need to calculate the value of the compensator in terms of its original unit.
An Australian power transmission line is designed to deliver 100 MVA at 6.6 kV over a...
A three-phase overhead transmission line is designed to deliver 100 MVA at 220 kV line voltage over a distance of 100 km. If the I2R losses need to be kept to max of 3% of the rated line MVA, given the resistivity of the conductor material to be 2.84 x 10-8 W-m, determine the required conductor diameter and the conductor size in circular mils
note that
1) single phase system
2) base values at transmission line circuit
A 100 MVA, 12 kV Single-phase generator has a sub transient reactance of 20%. The generator supplies a two synchronous motors over 25-km transmission line having transformers at both ends. The motors, all rated 6.0 kV, 66 MVA and 50 MVA for Mi and M2, respectively. For both motors X" = 15%. The single phase transformer T is rated 150 MVA, 132/12 kV with leakage reactance of...
A 132 kV, 55 MVA, 60 Hz, three-phase, power transmission line is 100 km (62. 1 mi) long, and has the following characteristics: r = 0.25 Ω/km x = 0.5 Ω/km y = j*S/km What is the per phase total series impedance and shunt admittance of the line? Should the line be modeled as a short, medium or long line? Calculate the ABCD constants of the line. Calculate the sending end voltage and current if the line is supplying rated...
A 220-kV, 150 MVA, 60-Hz, three-phase transmission line is 140 km long with the characteristic parameters of r = 0.09 Ohm/km, x = 0.88 Ohm/km, y = 4.1*10^-6 S/km. What is the sending end voltage if the line is supplying rated voltage and apparent power at 0.85 PF lagging? What is the voltage regulation of the transmission line for the conditions in question 11.
A 220-kV, 150 MVA, 60-Hz, three-phase transmission line is 140 km long with the characteristic parameters of r = 0.09 Ohm/km, x = 0.88 Ohm/km, y = 4.1 * 10^-6 s/km. Calculate the ABCD constants of this transmission line. What is the sending end voltage if the line is supplying rated voltage and apparent power at 0.85 PF lagging? What is the voltage regulation of the transmission line for the conditions in question 11. What is the efficiency of the...
A 220-kv, 150 MVA, 60-Hz three phase transmission line is 50 km long. The characteristic parameters of the transmission line are r-0.05 2/km x-0.88 /km 1. The voltag at the reeioransmisson line is215 kV What is the suppling end voltage if the line is supplying rated voltage at unity PF? What is the voltage regulation of the transmission line? What is the efficiency of the transmission line? a. b. c.
A 220-kV, 150 MVA, 60-Hz, three-phase transmission line is 140 km long with the characteristic parameters of r = 0.09 ohm/km, x = 0.88 ohm/km, y = 4.1 * 10^-6 S/km. 10. Calculate the ABCD constants of this transmission line. 11. What is the sending end voltage if the line is supplying rated voltage and apparent power at 0.85 PF lagging? 12. What is the voltage regulation of the transmission line for the conditions in question 11. 13. What is...
Problem #1 Part I (50 points) Consider the following one-line diagram of a three-phase power system. Assume that the system has the following base quantities: S3 100 MVA, and VbaselL 38 kV at the generator side. The rated line-to-line terminal voltage of the generator (BUS 1) is 38 kV. A single-circuit three-phase transposed overhead line composed by one ACSR Partridge conductor per phase with vertical configuration. The transmission line length is 50 km and the distance between phases a-b, b-c...
Show the solution and determine the best answer A short transmission line supplies power to a load of 30 MVA at 230 kV, 0.8 lagging power factor. Calculate the percent regulation for a line impedance of (12+j36) ohms. a. 1.78% b. 1.87% c. 2.18% d. 2.52% The shunt capacitive reactance of a 40km 34.5 kv line is 90 Kohms per km. What is the total capacitive reactance of the line, a. 3.5 M ohms b. 2.25 Kohms c. 6.75 Kohms...
A 3-phase, 50 Hz, long 300 Km transmission line delivers 60 MVA at 124 kV and 0-8 p.f. lagging. The total resistance 25.3 ohm and total reactance is 66.5 ohm and the admittance due to capacitance is 0.442*10-3 mho. Determine: (i) (ii) (iii) A,B, C and D constants of long T.L Sending end voltage, current and power factor Transmission efficiency, Voltage regulation