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Problem #1: A single-circuit, 500 kV, 60 Hz, three-phase transmission line is 250 km long. The...
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...
Problem 2: A 345 kV, 60 Hz, three-phase characteristic parameters of the transmission line are: transmission line is 130 km long. The r= 0.036 ?/km L = 0.8 x 10-3 H/km C = 0.0112 x 10-6 F/km The receiving end load is 270 MVA with 0.8 PF lagging at 325 kV. (k) What is the total series impedance of this transmission line? (5 points) () What is the total shunt admittance of this transmission line? (5 points) (m) Calculate the...
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: A 230-kV, 50 Hz, three-phase transmission line is 120 km long. The line has a per phase series impedance of z-0.05 +j0.45 Ω per km, and a per phase shunt admittance of y 3.4x10-6 Siemens per km. The line delivers (at the receiving end) 200 MVA, 0.8 lagging power factor at 220 kV. Now consider two cases: A- Assume that shunt parameters of the transmission line are ignored (i.e. even if this is a medium length transmission line, under...
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.
[2000] Question 3: A 500-km, 500-kV, 60-Hz, uncompensated three-phase line has a positive sequence series j4.4 x 10-6 S/ impedance z - j0.35 ohm/km and a positive-sequence shunt admittance y km. If at full load, the line delivers 700 MW at unity power factor and at 475 kV, Calculate The nominal voltage level for this line a) the exact ABCD parameters for this line, the sending- end voltagnb transferred, and max theoretical power that can be transferred, and c) d)...
QUESTIONS 1- A 69-kV, three-phase transmission line is 20 km long. The line has a per phase series impedance of 0,120 + 10,4325 per km. Detemine the sending end voltage, voltage regulation, the sending end power, and the transmission efficiency when the line delivers (a) 60 MVA, 0.8 lagging power factor at 60 kV. (b) 110 MW, unity power factor at 60 kV
A 200-km, 230-kV, 60-Hz three-phase line has a positive-sequence series impedance ?=0.08+?0.48 Ω/km and a positive-sequence shunt admittance ?=?3.33×10−6 S/km. At full load, the line delivers 250 MW at 0.99 pf lagging and at 220 kV. Using the nominal ? circuit, calculate: a. The ABCD parameters, b. The sending-end voltage and current, c. The percent voltage regulation.
4. A 500 km, 500kV,60 Hz three-phase transmission line has a positive sequence series impedance z =j 0.38.2/km and a shunt admittance y =j 4.0 x 10-6S/km. Line losses are neglected. a. Calculate the line's characteristic impedance Zc, the propagation constant y and the exact ABCD parameters of the line... b. Calculate the surge impedance loading (SIL) in MW and the maximum power that the line can deliver at rated voltage C. At full load the line delivers 1000 M...