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For the overloaded generator problem as mentioned before, a capacitance with Qc = 160kVAR is adde...
A 2000 kW turbine –generator of 0.85 power factor operates at the rated load. An additional load of 300kW at 0.8 power factor is added. Determine the required kVAR of capacitor to operate the turbine generator but keep it from being overloaded.
A 2000 kW turbine –generator of 0.85 power factor operates at the rated load. An additional load of 300kW at 0.8 power factor is added. Determine the required kVAR of capacitor to operate the turbine generator but keep it from being overloaded.
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....
50 Points 1- A balanced delta connected load of 15 + j18 per phase is connected...
50 Points 1- A balanced delta connected load of 15 + j18 per phase is connected at the end of a three-phase line as shown in Figure 1. The line impedance is 1 + 12 12 per phase. The line is supplied from a three-phase source with a line-to-line voltage of 207.85 V rms. Taking the phase voltage Van as reference, determine: a) Current in phase a. b) Total complex power supplied from the source. c) Total complex powers of...
1- A balanced delta connected load of 15 + j18 12 per phase is connected at...
1- A balanced delta connected load of 15 + j18 12 per phase is connected at the end of a three-phase line as shown in Figure 1. The line impedance is 1 + j2 12 per phase. The line is supplied from a three-phase source with a line-to-line voltage of 207.85 V rms. Taking the phase voltage Van as reference, determine: a) Current in phase a. b) Total complex power supplied from the source. c) Total complex powers of the...
Please show detailed steps. Thanks Problem # 1: Three Phase Power [35 points] A three-phase substation...
Please show detailed steps. Thanks
Problem # 1: Three Phase Power [35 points] A three-phase substation bus supplies three wye-connected three phase loads that are connected in parallel through a three-phase feeder with an impedance of 0.3 30 per phase Load 1 draws 75kVA at 0.866 lagging power factor, load 2 draws 45 kW at 0.70 leading power factor and load 3 draws 20 kVAR at 0.85 lagging power factor. The line-line voltage at the load is 460V Take the...
A balanced delta connected load of 15+?18 Ω per phase is connected at the end of...
A balanced delta connected load of 15+?18 Ω per phase is
connected at the end of a three-phase line as shown in Figure 1.
The line impedance is 1+?2 Ω per phase. The line is supplied from a
three-phase source with a line-to-line voltage of 207.85 V rms.
Taking the phase voltage ??? as reference, determine:
1. Total complex powers of the line and the load.
2.A delta connected capacitor bank is connected in parallel with
the load to improve...
A 60-Hz single-phase AC power network is shown in the figure below with four different loads. The source voltage ES-320 0. Prior to adding the capacitor load for power factor correction, the source c...
A 60-Hz single-phase AC power network is shown in the figure below with four different loads. The source voltage ES-320 0. Prior to adding the capacitor load for power factor correction, the source current IS-135 30 . Determine the capacitance (in μF) of the capacitive load that will make the power factor unity (pf 1.0) of the system. Enter the one best answer (as a number without the units) from the following choices: Sync 74 % 6 15 kVA 10...
Please show all work Consider the circuit shown below: 500 V RMS 25/70 ohms f =...
Please show all work
Consider the circuit shown below: 500 V RMS 25/70 ohms f = 60 Hz Determine the current (magnitude only), the real power, and the reactive power delivered to the load. |IRMS] = : What value capacitor should be added in parallel with the load in order to correct the power factor to unity? Also determine the final current (magnitude only delivered by the source after adding the capacitor. C= Trees
2) The reactive power of the balanced Y-Y connected three phase system depicted below is to be co...
2) The reactive power of the balanced Y-Y connected three phase system depicted below is to be compensated by adding shunt capacitors. The network frequency is known as 50 Hz. The load resistances are R 330ΣΩ and the load inductances are L H. The phasor of the voltage for R phase is given as V 220/2 Volts. a) Find the followings before connecting the power factor compensation capacitors: i) The effective values of the line currents IR, Is, IT, ii)...
Problem 4 A synchronous generator rated 480V, 500kVA, 0.9pf, has a synchronous impedance of 160% on...
Problem 4 A synchronous generator rated 480V, 500kVA, 0.9pf, has a synchronous impedance of 160% on the generator base rating of 500kVA. The generator requires 5A of excitation current to maintain and open circuit voltage of 480V. If the generator is operating at 400k W at 0.9 p.fleading (delivering kVAR to the system), calculate the following assuming operated connected to a 480V infinite bus: (neglect internal resistance and losses) a) Armature current, I(a): (include magnitude and angle referenced to V(a)-277/0...
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....
50 Points 1- A balanced delta connected load of 15 + j18 per phase is connected at the end of a three-phase line as shown in Figure 1. The line impedance is 1 + 12 12 per phase. The line is supplied from a three-phase source with a line-to-line voltage of 207.85 V rms. Taking the phase voltage Van as reference, determine: a) Current in phase a. b) Total complex power supplied from the source. c) Total complex powers of...
1- A balanced delta connected load of 15 + j18 12 per phase is connected at the end of a three-phase line as shown in Figure 1. The line impedance is 1 + j2 12 per phase. The line is supplied from a three-phase source with a line-to-line voltage of 207.85 V rms. Taking the phase voltage Van as reference, determine: a) Current in phase a. b) Total complex power supplied from the source. c) Total complex powers of the...
Please show detailed steps. Thanks
Problem # 1: Three Phase Power [35 points] A three-phase substation bus supplies three wye-connected three phase loads that are connected in parallel through a three-phase feeder with an impedance of 0.3 30 per phase Load 1 draws 75kVA at 0.866 lagging power factor, load 2 draws 45 kW at 0.70 leading power factor and load 3 draws 20 kVAR at 0.85 lagging power factor. The line-line voltage at the load is 460V Take the...
A balanced delta connected load of 15+?18 Ω per phase is
connected at the end of a three-phase line as shown in Figure 1.
The line impedance is 1+?2 Ω per phase. The line is supplied from a
three-phase source with a line-to-line voltage of 207.85 V rms.
Taking the phase voltage ??? as reference, determine:
1. Total complex powers of the line and the load.
2.A delta connected capacitor bank is connected in parallel with
the load to improve...
A 60-Hz single-phase AC power network is shown in the figure below with four different loads. The source voltage ES-320 0. Prior to adding the capacitor load for power factor correction, the source current IS-135 30 . Determine the capacitance (in μF) of the capacitive load that will make the power factor unity (pf 1.0) of the system. Enter the one best answer (as a number without the units) from the following choices: Sync 74 % 6 15 kVA 10...
Please show all work
Consider the circuit shown below: 500 V RMS 25/70 ohms f = 60 Hz Determine the current (magnitude only), the real power, and the reactive power delivered to the load. |IRMS] = : What value capacitor should be added in parallel with the load in order to correct the power factor to unity? Also determine the final current (magnitude only delivered by the source after adding the capacitor. C= Trees
2) The reactive power of the balanced Y-Y connected three phase system depicted below is to be compensated by adding shunt capacitors. The network frequency is known as 50 Hz. The load resistances are R 330ΣΩ and the load inductances are L H. The phasor of the voltage for R phase is given as V 220/2 Volts. a) Find the followings before connecting the power factor compensation capacitors: i) The effective values of the line currents IR, Is, IT, ii)...
Problem 4 A synchronous generator rated 480V, 500kVA, 0.9pf, has a synchronous impedance of 160% on the generator base rating of 500kVA. The generator requires 5A of excitation current to maintain and open circuit voltage of 480V. If the generator is operating at 400k W at 0.9 p.fleading (delivering kVAR to the system), calculate the following assuming operated connected to a 480V infinite bus: (neglect internal resistance and losses) a) Armature current, I(a): (include magnitude and angle referenced to V(a)-277/0...
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