A short transmission line with R =X= 4 Ωو is supplying a 3-phase load of 500...
A short transmission line with R =X= 4 Ωو is supplying a 3-phase load of 500 MVA, p.f 0.8 lagging from a 3-phase 400K, 50HZ source. Find, voltage at the load and the voltage drop in the supply line. Find the value of the capacitor that has to be connected parallel to the load, to reduce the voltage drop to 50%
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A short transmission line with R =X= 4 Ωو is supplying a 3-phase
load of 500...
A short transmission line with R =X= 4 Ωو is supplying a 3-phase load of 500...
A short transmission line with R =X= 4 Ωو is supplying a 3-phase load of 500 KVA, p.f 0.8 lagging from a 3-phase 400K, 50HZ source. Find, voltage at the load and the voltage drop in the supply line. Find the value of the capacitor that has to be connected parallel to the load, to reduce the voltage drop to 50%
4- - a 3-phase load of 500 MVA ,120 KV at 0.8 p.f lagging find: -...
4- - a 3-phase load of 500 MVA ,120 KV at 0.8 p.f lagging find: - The magnitude of line current I Line – Three-phase (real) power Pload - Phase a |1ine) = ? 30, 500 MVA, 0.8 pf lagging line-to-line Phaseb Phasec
Problem 3: (20 points) ase serves two balanced parallel loads. The line- A three-phase transmission line...
Problem 3: (20 points) ase serves two balanced parallel loads. The line- A three-phase transmission line with an impedance (0.2 +j1.0) 12/phase serves two balan to-line voltage at the load end of the line is 480 V (rms). Load 1: Wye-connected and absorbs a total of 200 kW with a lagging p.f. of 0.87. Load 2: Delta-connected with an impedance of (20+30) 2/phase. a. Draw the single phase representation of the circuit b. How much current flows through phase A...
A single-circuit, 50-Hz, 3-phase transmission line is 150 km long. The line is connected to supply...
A single-circuit, 50-Hz, 3-phase transmission line is 150 km long. The line is connected to supply a load of 30 MVA at 0.85 pf lag and 138 kV. The line constants are : R = 0.186 ohm/km, L = 2.60 mH/km, and C = 0.012 μF/km. Using nominal π representation calculate : (a) the ABCD constants of the line. (b) the sending end voltage when supplying (i) no load, and (ii) the above load at the receiving end at the...
A 3-phase, 50 Hz overhead transmission line has the following constants
A 3-phase, 50 Hz overhead transmission line has the following constants : Resistance/phase = 9·6 Ω Inductance/phase = 0·097 mH Capacitance/phase = 0·765 μF If the line is supplying a balanced load of 24,000 kVA 0·8 p.f. lagging at 66 kV, calculate : (i) sending end current (ii) line value of sending end voltage (iii) sending end power factor (iv) percentage regulation (v) transmission efficiency
kV/phase, 60 Hz, lossless short transmission line has a short-circuit power of 500 MVA/phase. Consider 7. A a unity power factor load connected at the receiving end. Assume that the sending end volta...
kV/phase, 60 Hz, lossless short transmission line has a short-circuit power of 500 MVA/phase. Consider 7. A a unity power factor load connected at the receiving end. Assume that the sending end voltage is equal to the nominal voltage. a. Determine the maximum active power this line can transmit (5 points) b. Determine the reactance of the line (5 points) c. Using basic equations of circuit analysis, show that the magnitude of the receiving end voltage (VR) is approximately 71%...
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...
Problem 3 Two parallel 3-phase loads are supplied from a 3-phase source with line-line voltage of...
Problem 3 Two parallel 3-phase loads are supplied from a 3-phase source with line-line voltage of 415.6922 V rms. The data of their power consumption are as follows. Load 1: 15 kVA at power factor of 0.75 lagging Load 2: 9 kW at power factor 0.82 lagging 1) 2) 3) 4) 5) Determine the complex power consumed by Load 1 Find the complex power consumed by Load 2 Calculate the total complex power consumed by the two loads. Determine the...
Good day all. I am facing the following problem and would like to seek some kind...
Good day all.
I am facing the following problem and would like to seek some
kind help, please.
Sincerely appreciate all help and input.
- Ms Tan
1. An 10 MVA, 33 kV, 34 pole, 60 Hz, three-phase wye-connected synchronous generator has a synchronous reactance of 10 and a negligible armature resistance. a. Find the synchronous speed of this generator. b. At a certain excitation, the generator delivers 50% of rated load at 0.7 leading power factor at '33' kV....
1. Solve the following three-phase problem A 3-phase line has an impedance of 0.6+j3 Q/phase. The...
1. Solve the following three-phase problem A 3-phase line has an impedance of 0.6+j3 Q/phase. The line feeds three balanced loads that are connected in parallel. The first oad is absorbing a total of 156kW+jl17kVar, the second load is A connected and has an impedance of 144-j42 Q/phase, and the third load is 115KVA at 0.6 lagging P.F. .The line to neutral voltage at the load end is 2400 volts. a. Find the line voltage at the source end b....
4- - a 3-phase load of 500 MVA ,120 KV at 0.8 p.f lagging find: - The magnitude of line current I Line – Three-phase (real) power Pload - Phase a |1ine) = ? 30, 500 MVA, 0.8 pf lagging line-to-line Phaseb Phasec
Problem 3: (20 points) ase serves two balanced parallel loads. The line- A three-phase transmission line with an impedance (0.2 +j1.0) 12/phase serves two balan to-line voltage at the load end of the line is 480 V (rms). Load 1: Wye-connected and absorbs a total of 200 kW with a lagging p.f. of 0.87. Load 2: Delta-connected with an impedance of (20+30) 2/phase. a. Draw the single phase representation of the circuit b. How much current flows through phase A...
kV/phase, 60 Hz, lossless short transmission line has a short-circuit power of 500 MVA/phase. Consider 7. A a unity power factor load connected at the receiving end. Assume that the sending end voltage is equal to the nominal voltage. a. Determine the maximum active power this line can transmit (5 points) b. Determine the reactance of the line (5 points) c. Using basic equations of circuit analysis, show that the magnitude of the receiving end voltage (VR) is approximately 71%...
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...
Problem 3 Two parallel 3-phase loads are supplied from a 3-phase source with line-line voltage of 415.6922 V rms. The data of their power consumption are as follows. Load 1: 15 kVA at power factor of 0.75 lagging Load 2: 9 kW at power factor 0.82 lagging 1) 2) 3) 4) 5) Determine the complex power consumed by Load 1 Find the complex power consumed by Load 2 Calculate the total complex power consumed by the two loads. Determine the...
Good day all.
I am facing the following problem and would like to seek some
kind help, please.
Sincerely appreciate all help and input.
- Ms Tan
1. An 10 MVA, 33 kV, 34 pole, 60 Hz, three-phase wye-connected synchronous generator has a synchronous reactance of 10 and a negligible armature resistance. a. Find the synchronous speed of this generator. b. At a certain excitation, the generator delivers 50% of rated load at 0.7 leading power factor at '33' kV....
1. Solve the following three-phase problem A 3-phase line has an impedance of 0.6+j3 Q/phase. The line feeds three balanced loads that are connected in parallel. The first oad is absorbing a total of 156kW+jl17kVar, the second load is A connected and has an impedance of 144-j42 Q/phase, and the third load is 115KVA at 0.6 lagging P.F. .The line to neutral voltage at the load end is 2400 volts. a. Find the line voltage at the source end b....
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