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Q1. A 30-km, 34.5kV, 50Hz, three-phase line has a positive-sequence series impedance Z-0.19+j0.34 2/km. The load...
4. A 500 km, 500kV,60 Hz three-phase transmission line has a positive sequence series impedance z...
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...
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...
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.
A 230-kV, three-phase transmission line has a per phase series impedance of z = 0.05j0.45 2...
A 230-kV, three-phase transmission line has a per phase series impedance of z = 0.05j0.45 2 per km and a per phase shunt admittance ofy = j3.4 x 10-6 siemens per km. The line is 80 km long. Using the nominal r model, determine (a) The transmission line ABCD constants. Find the sending end voltage and current, voltage regulation, the sending end power and the transmission efficiency when the line delivers (b) 200 MVA, 0.8 lagging power factor at 220...
Athree-phase, 132KV, 50Hz, 200km long overhead line delivers a load of 40MVA at 0.8 power factor...
Athree-phase, 132KV, 50Hz, 200km long overhead line delivers a load of 40MVA at 0.8 power factor lagging. The per phase impedance and admittance of the line per km are (0.173 +0.667) ohms and j5 x 10mho respectively. Find the regulation of the line with the sending end voltage being held constant.
A 230kV three phase transmission line has a per phase series impedance of z=0.05+j0.45ohms per km...
A 230kV three phase transmission line has a per phase series impedance of z=0.05+j0.45ohms per km and a per phase shunt admittance of y= j3.4x10^-6 siemens per km. The line is 80km long. Using the medium line pi model: (a) Determine the transmission line model constants A, B, C, and D (b) Find the sending end (generating) voltage, current and power when the line delivers to a load of 1. 200 MVA with 0.8 lagging power factor at 220 kV...
A three-phase transmission line is 200 km long. lt has a total series impedance of 25+j110)Ω...
A three-phase transmission line is 200 km long. lt has a total series impedance of 25+j110)Ω Per Phase and a total shunt admittance ofj5x 10 Ω. It delivers 180 MW at 275 kV and 0.8 power factor lagging to a load connected at the receiving end. Using the medium π model of the line, determine the voltage, current, real power, reactive power and power factor at the sending end of the line.
Question #4 A 60-Hz, three-phase, transmission line is 210 km long. It has a total series...
Question #4 A 60-Hz, three-phase, transmission line is 210 km long. It has a total series impedance of (0.06 +0.053) 2/km and a shunt admittance of j5.6 x 10-6 S/km. The supply provides 200MW (P) at 275kV (line voltage i.e. Vs), with 0.9 power-factor lagging (i.e. pfs). Using the nominal-T approximation, (i) ABCD parameters (ii) Receiving end voltage and current (iii) Receiving end power and power factor; (iv) Line voltage regulation (v) line efficiency (vi) Propagation constant (vii) Attenuation constant
[2000] Question 3: A 500-km, 500-kV, 60-Hz, uncompensated three-phase line has a positive sequence series j4.4...
[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)...
#1, A 3-phase, 60-Hz transmission line is 50 km long and has r -o20 Ohms/km and...
#1, A 3-phase, 60-Hz transmission line is 50 km long and has r -o20 Ohms/km and x-0.50 Ohms/km. The load at the receiving end of the line is 2.5 Mw at a power factor of 0.9 leading. (i)Compute the impedance of the line, Zline * at the lad tole, the lad wi e . (ii)Find the sending end current, I, as 33nv lhe to tine Van-eerene (ii) What is the sending end voltage, V,? (iv)What is the real power, P...
A three-phase line with an impedance of (0.25+j1.25) ohms/phase supplies power to three balanced 3-phase parallel...
A three-phase line with an impedance of (0.25+j1.25) ohms/phase supplies power to three balanced 3-phase parallel connected loads: • Load 1 absorbs a total of 125 kW and 100 KVAR • Load 2 is a delta-connected impedance load with (125+j 40)ohms/phase • Load 3 absorbs 120 kVA at 0.8 power factor (lagging) Given that the line-neutral voltage at the load end of the line is 2400 V, determine the magnitude of the line-to- line voltage at the source end of...
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...
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.
A 230-kV, three-phase transmission line has a per phase series impedance of z = 0.05j0.45 2 per km and a per phase shunt admittance ofy = j3.4 x 10-6 siemens per km. The line is 80 km long. Using the nominal r model, determine (a) The transmission line ABCD constants. Find the sending end voltage and current, voltage regulation, the sending end power and the transmission efficiency when the line delivers (b) 200 MVA, 0.8 lagging power factor at 220...
Athree-phase, 132KV, 50Hz, 200km long overhead line delivers a load of 40MVA at 0.8 power factor lagging. The per phase impedance and admittance of the line per km are (0.173 +0.667) ohms and j5 x 10mho respectively. Find the regulation of the line with the sending end voltage being held constant.
A three-phase transmission line is 200 km long. lt has a total series impedance of 25+j110)Ω Per Phase and a total shunt admittance ofj5x 10 Ω. It delivers 180 MW at 275 kV and 0.8 power factor lagging to a load connected at the receiving end. Using the medium π model of the line, determine the voltage, current, real power, reactive power and power factor at the sending end of the line.
Question #4 A 60-Hz, three-phase, transmission line is 210 km long. It has a total series impedance of (0.06 +0.053) 2/km and a shunt admittance of j5.6 x 10-6 S/km. The supply provides 200MW (P) at 275kV (line voltage i.e. Vs), with 0.9 power-factor lagging (i.e. pfs). Using the nominal-T approximation, (i) ABCD parameters (ii) Receiving end voltage and current (iii) Receiving end power and power factor; (iv) Line voltage regulation (v) line efficiency (vi) Propagation constant (vii) Attenuation constant
[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)...
#1, A 3-phase, 60-Hz transmission line is 50 km long and has r -o20 Ohms/km and x-0.50 Ohms/km. The load at the receiving end of the line is 2.5 Mw at a power factor of 0.9 leading. (i)Compute the impedance of the line, Zline * at the lad tole, the lad wi e . (ii)Find the sending end current, I, as 33nv lhe to tine Van-eerene (ii) What is the sending end voltage, V,? (iv)What is the real power, P...
A three-phase line with an impedance of (0.25+j1.25) ohms/phase supplies power to three balanced 3-phase parallel connected loads: • Load 1 absorbs a total of 125 kW and 100 KVAR • Load 2 is a delta-connected impedance load with (125+j 40)ohms/phase • Load 3 absorbs 120 kVA at 0.8 power factor (lagging) Given that the line-neutral voltage at the load end of the line is 2400 V, determine the magnitude of the line-to- line voltage at the source end of...
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