Question

In: Electrical Engineering

For 345 KV, a three conductor per phase are to be used at 0.30 meters per...

For 345 KV, a three conductor per phase are to be used at 0.30 meters per conductor in a flat horizontal layout. The distance between the centers of each bundle is 4 meters in a delta configuration. GMR for the conductors is 0.012 m

Find:

GMD, L, and XL

Solutions

Expert Solution

Manojponduru answered 2 years ago
Next > < Previous

Related Solutions

345 kV, 50 Hz, 3-phase transmission line is 100 km long. The resistance is 0.048 Ω/km...
345 kV, 50 Hz, 3-phase transmission line is 100 km long. The resistance is 0.048 Ω/km and the inductance is 1,24 mH/km. The shunt capacitance is 0.0174 μF/km. The receiving end load is 216 MW with 0.8 power factor lagging at 325 kV. (a) Compute ABCD parameters using π equivalent circuit (b) Sending end voltage VS, (c) Sending end current IS, (d) Efficiency
Plate values of a three-phase transformer are given below: 1600 kVA, 15 kV / 0,4 kV,...
Plate values of a three-phase transformer are given below: 1600 kVA, 15 kV / 0,4 kV, 50 Hz, i0 = 1.2%; ukN= 6%, idle losses 2450 W, rated power copper losses 14500 W; Dy5 connected.. III) If there is 75% load in the power factor with 0.85 inductance and 0.85 capacity. At what times of the day can capacity loading be seen? What solution should be applied to prevent voltage change? IV) Draw the fastening group. How can this transformer...
Plate values of a three-phase transformer are given below: 1600 kVA, 15 kV / 0,4 kV,...
Plate values of a three-phase transformer are given below: 1600 kVA, 15 kV / 0,4 kV, 50 Hz, i0 = 1.2%; ukN= 6%, idle losses 2450 W, rated power copper losses 14500 W; Dy5 connected.. Calculate the secondary VOLTAGE separately at 75% load in the power factor with 0.85 inductance and 0.85 capacity. Compare and interpret the results. At what times of the day can capacity loading be seen? What solution should be applied to prevent voltage change?
A 500-kV, 60 Hz, three-phase completely transposed overhead line has three ASCR 1113-kcmil conductors per bundle,...
A 500-kV, 60 Hz, three-phase completely transposed overhead line has three ASCR 1113-kcmil conductors per bundle, with 0.5 m between conductors in the bundle. The horizontal phase spacing between bundle centers are 10, 10, and 20 m. With a length of 190 km, the line delivers 1800 MW at 475 kV and at 0.90 power factor leading to the receiving end at full load. Using the nominal π circuit, calculate the: (a) ABCD parameters, (b) sending-end voltage and current, (c)...
A three phase source supplies a building with 18 KV which has a group of four...
A three phase source supplies a building with 18 KV which has a group of four 3-phase loads as follows: LOAD 1: Wye connected; S=444 KVA and 0.84 lagging power factor LOAD 2: Delta connected; S=693.75 KVA and 0.64 leading power factor LOAD 3: Wye connected; Z= 140 + j240 Ω LOAD 4: Unbalanced wye-connected and grounded load, with  Za = 14+j3 Ω , Zb = 5-j24Ω and Zc =1+j14 Ω What is the current phasor flowing through each conductor?
A 100MVA, 400 delta / 11Y kV, 3-phase transformer has Z(eq) = 0.02+j0.05 ohm per phase...
A 100MVA, 400 delta / 11Y kV, 3-phase transformer has Z(eq) = 0.02+j0.05 ohm per phase referred to the low-voltage side, and R(c) = 1800 ohm per phase referred to the high-voltage side. If the transformer supplies rated voltage at full load at 0.8 power factor lagging. Determine its voltage regulation and efficiency.
A three-phase 60-Hz transmission line is energized with 420 kV at the sending end. This line...
A three-phase 60-Hz transmission line is energized with 420 kV at the sending end. This line is lossless and 400 km long with ? = 0.001265 rad/km and ?? = 260 Ω. a) Suppose a three-phase short-circuit occurs at the receiving end. Determine the receiving end current and the sending end current. b) Determine the reactance and MVar of a shunt reactor to be installed at the load bus to limit the no-load receiving-end voltage to 440 kV. c) When...
Diesel Generator A I MVA diesel three-phase generator is rated at 4.16 kV, 60 Hz, and...
Diesel Generator A I MVA diesel three-phase generator is rated at 4.16 kV, 60 Hz, and connected as Y its neutral is kept floating. It is directly tied to three loads, one consuming 50% of its capacity, and each of the other two consuming 25% of its capacity. A three-phase to ground fault could occur at any of the loads. Draw a one-line diagram of this system, then describe what type of faults could occur in the generator and diesel...
2) A three-phase synchronous generator is rated 16 kV and 200 MVA, has negligible losses and...
2) A three-phase synchronous generator is rated 16 kV and 200 MVA, has negligible losses and has reactance of 1.65 pu. The generator is operated on an infinite bus of 15 kV voltage and delivers 100 MVA at 0.8 Power Factor, lagging. a)Determine the internal voltage (E_i), the power angle (δ), and the line current of the machine. b)If the field current of the machine is reduced by 10%, while the mechanical power input to the machine is maintained constant,...
A three phase synchronous motor is Y-connected with the following values: 2.3 kV, 400 hp, 60...
A three phase synchronous motor is Y-connected with the following values: 2.3 kV, 400 hp, 60 Hz, 8 poles with a rated pf of 0.85 leading. It is 90% efficient at full load with an armature resistance of 0.80 Ohms and synchronous reactance of 11 Ohms. At full load calculate the output torque, and internal generated voltage (EA)
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT