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%
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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 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%
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
A 60-Hz short transmission line, having R = 0.62 ohms per phase and L = 93.24...
A 60-Hz short transmission line, having R = 0.62 ohms per phase and L = 93.24 millihenrys per phase, supply a three-phase, wye-connected 100 MW load of 0.9 lagging power factor at 215 kV line-to-line voltage. Calculate the sending-end voltage per phase. Determine the voltage regulation of the transmission line. Determine the efficiency of transmission of the transmission line.
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...
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...
The impedance of a three-phase line is 0.3 + j 2.4 per phase. The line feeds...
The impedance of a three-phase line is 0.3 + j 2.4 per phase. The line feeds two balanced three- phase loads connected in parallel. The first load takes 600 kVA at 0.7 p.f. lagging. The second takes 150 kW at unity power factor. The line to line voltage at the load end of the line is 3810.5 V. Find a) The magnitude of the line voltage at the source end of the line. b) The total active and reactive power...
A thee-phase short transmission line is supplying a load of 250 MW at 0.8 power factor lagging. The voltage at the receiving end is kept constant at 230 kV. The resistance and reactance per phase of the line are 5 2 and 15 Ω respectively. (i) Calculate th
A thee-phase short transmission line is supplying a load of 250 MW at 0.8 power factor lagging. The voltage at the receiving end is kept constant at 230 kV. The resistance and reactance per phase of the line are 5Ω and 15 Ω respectively. (i) Calculate the voltage regulation. (ii) At what value of the power factor is the voltage regulation zero? Derive the expression used
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 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
A 60 Hz, balanced three-phase source is connected to a balanced load of 2815 kVA at...
A 60 Hz, balanced three-phase source is connected to a balanced load of 2815 kVA at 0.95 pf lagging through a short transmission line with negligible resistance and a series inductive reactance of 13 12. The load is operated at 25 kV. Compute: (a) the line current magnitude (b) the line voltage magnitude at the source (c) the line-to-neutral source voltage (d) the power factor of the source
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...
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 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 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
A 60 Hz, balanced three-phase source is connected to a balanced load of 2815 kVA at 0.95 pf lagging through a short transmission line with negligible resistance and a series inductive reactance of 13 12. The load is operated at 25 kV. Compute: (a) the line current magnitude (b) the line voltage magnitude at the source (c) the line-to-neutral source voltage (d) the power factor of the source
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