A long transmission line has the following parameters: ? = 0.9413?ÑÖ.:ÖÜ = ?, ? = ?á...
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A long transmission line has the following parameters:
? = 0.9413?ÑÖ.:ÖÜ = ?, ? = ?á...
Problem #1: A single-circuit, 500 kV, 60 Hz, three-phase transmission line is 250 km long. The...
Problem #1: A single-circuit, 500 kV, 60 Hz, three-phase transmission line is 250 km long. The characteristic parameters of the transmission line are: x0.4 0/km At full load, the line delivers 1000 MVA at 500 kV with 0.80 PF lagging y j4 x 10 S/km r0.045 /km a. Assume that identical shunt reactors (inductors) are connected from each phase conductor to neutral at both ends of the line during light-load conditions, providing 50% total shunt compensation. The reactors are removed...
Q2. Draw the nominal π circuit that is used to represent the medium-length transmission line model with total series impedance Z and total shunt admittance Y. Then derive the equations to express the...
Q2. Draw the nominal π circuit that is used to represent the medium-length transmission line model with total series impedance Z and total shunt admittance Y. Then derive the equations to express the ABCD parameters (a) 20% (b)A 200 km, 230 kV, 50 Hz three-phase overhead transmission line has a positive-sequence series impedance z (0.08 + j0.48) Ω/km, and a positive-sequence shunt admittance y-j3.33 x 10T° S/km. At full load, the line delivers 250 MW at 0.99 power factor lagging...
#2. A 3-phase, 60-Hz transmission line is 140 miles long and has r :0.30 Ohms/mile, x...
#2. A 3-phase, 60-Hz transmission line is 140 miles long and has r :0.30 Ohms/mile, x =1.5 Ohms/mile, and the shunt admittance is 7.8 x 100900 mho /mile. The load at the receiving end of the line is 36 MVA at 220 kV and a power factor of 0.90 lagging (i)Find the ABCD parameters of the line. (i)Find the sending end phasor voltage, Vs and phasor current, Is iv)What is the real power, P and the reactive power Q at...
A short 3-phase, 33-kV power transmission line delivers a load of 7-MW at a power factor...
A short 3-phase, 33-kV power transmission line delivers a load of 7-MW at a power factor of 0.85 lagging and 33-kV. If the series impedance of the line is 20+j30 Ohms/phase, calculate The ABCD constants (parameters) The sending end voltage The load angle The voltage regulation The transmission efficiency
PROBLEM: A 230-kV, 50 Hz, three-phase transmission line is 120 km long. The line has a per phase ...
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...
Problem 2: A 345 kV, 60 Hz, three-phase characteristic parameters of the transmission line are: transmission...
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...
Question 2: A 120 miles long medium length transmission line operating at 60 Hz delivers 46MW...
Question 2: A 120 miles long medium length transmission line operating at 60 Hz delivers 46MW of power to a load with 0.707 power factor lagging. If the receiving end voltage is 69 KVLL, and line parameters are: r= 0.15 S2/Km, x=0.70 S2/Km, and y= 5.2 uS/Km, use nominal a model for the line and calculate the following values: a) Series impedance and shunt admittance of the line, b) Sending end voltage and current (Vs, Is) c) The voltage regulation...
power system A single-circuit 60-Hz high voltage power transmission line is 370 km (230 mi) long....
power system
A single-circuit 60-Hz high voltage power transmission line is 370 km (230 mi) long. The conductors are Rook with flat horizontal configuration and 7.25 ms=(23.8 ft.) conductor spacing. The load on the line is 125 MW at 100% power factor. Use attached Tables A3 to A3to determine; The sending end voltage Vs The sending end current Is The sending end power Ps The percentage voltage regulation The transmission efficiency Given that Ds for the Rook conductor is 0.0327...
A 60 km-long three-phase 60-Hz transmission line has per phase line inductance of 1.554 mH/km and...
A 60 km-long three-phase 60-Hz transmission line has per phase line inductance of 1.554 mH/km and per phase line resistance of 10.33 mΩ/km. It supplies a three-phase Y connected 100 MW 0.9 lagging power factor load at 215 kV line-line voltage. Calculate the voltage regulation and efficiency of transmission.
Show the solution for the following problem 1. A short, 230 kV transmission line has an...
Show the solution for the following problem 1. A short, 230 kV transmission line has an impedance of 5 cis 78 ohms. The load at the receiving end is 100 MW at 230 kV, 85% lagging power factor. What is the voltage at the sending end? a. 235.43 kV b. 226.3 kV c. 231.78 kV d. 238.21 kV 2. A 66 kv medium length transmission line delivers a load of 10 MW at 66 kv and 80% lagging P.F. the...
Problem #1: A single-circuit, 500 kV, 60 Hz, three-phase transmission line is 250 km long. The characteristic parameters of the transmission line are: x0.4 0/km At full load, the line delivers 1000 MVA at 500 kV with 0.80 PF lagging y j4 x 10 S/km r0.045 /km a. Assume that identical shunt reactors (inductors) are connected from each phase conductor to neutral at both ends of the line during light-load conditions, providing 50% total shunt compensation. The reactors are removed...
Q2. Draw the nominal π circuit that is used to represent the medium-length transmission line model with total series impedance Z and total shunt admittance Y. Then derive the equations to express the ABCD parameters (a) 20% (b)A 200 km, 230 kV, 50 Hz three-phase overhead transmission line has a positive-sequence series impedance z (0.08 + j0.48) Ω/km, and a positive-sequence shunt admittance y-j3.33 x 10T° S/km. At full load, the line delivers 250 MW at 0.99 power factor lagging...
#2. A 3-phase, 60-Hz transmission line is 140 miles long and has r :0.30 Ohms/mile, x =1.5 Ohms/mile, and the shunt admittance is 7.8 x 100900 mho /mile. The load at the receiving end of the line is 36 MVA at 220 kV and a power factor of 0.90 lagging (i)Find the ABCD parameters of the line. (i)Find the sending end phasor voltage, Vs and phasor current, Is iv)What is the real power, P and the reactive power Q at...
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...
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...
Question 2: A 120 miles long medium length transmission line operating at 60 Hz delivers 46MW of power to a load with 0.707 power factor lagging. If the receiving end voltage is 69 KVLL, and line parameters are: r= 0.15 S2/Km, x=0.70 S2/Km, and y= 5.2 uS/Km, use nominal a model for the line and calculate the following values: a) Series impedance and shunt admittance of the line, b) Sending end voltage and current (Vs, Is) c) The voltage regulation...
power system
A single-circuit 60-Hz high voltage power transmission line is 370 km (230 mi) long. The conductors are Rook with flat horizontal configuration and 7.25 ms=(23.8 ft.) conductor spacing. The load on the line is 125 MW at 100% power factor. Use attached Tables A3 to A3to determine; The sending end voltage Vs The sending end current Is The sending end power Ps The percentage voltage regulation The transmission efficiency Given that Ds for the Rook conductor is 0.0327...
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