One conductor of a three phase line is open. The current flowing to the A connected load through line "a" is 10 A. With the current in line "a" as reference and assuming that line "e" is open, find the symmetrical components of the line currents. (Refer Fig.) ao bo- hould Ia-1020 Ib-10 A IC=0 Open www www www

One conductor of a three phase line is open. The current flowing to the A connected load through line "a" is 10 A. With the current in line "a" as reference and assuming that line "e" is open, find the symmetrical components of the line currents. (Refer Fig.) ao bo- hould Ia-1020 Ib-10 A IC=0 Open www www www

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter4: Transmission Line Parameters

Section: Chapter Questions

Problem 4.24P

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Similar questions

A 40-km, 220-kV, 60-Hz, three-phase overhead transmission line has a per-phase resistance of 0.15/km, a per-phase inductance of 1.3263 mH/km, and negligible shunt capacitance. Using the short line model, find the sending-end voltage, voltage regulation, sending-end power, and transmission line efficiency when the line is supplying a three-phase load of (a) 381 MVA at 0.8 power factor lagging and at 220 kV and (b) 381 MVA at 0.8 power factor leading and at 220 kV.
A single-phase overhead transmission line consists of two solid aluminum conductors having a radius of 3 cm with a spacing 3.5 m between centers. (a) Determine the total line inductance in mH/m. (b) Given the operating frequency to be 60 Hz, find the total inductive reactance of the line in /km and in/mi. (c) If the spacing is doubled to 7 m, how does the reactance change?
A balanced three-phase load is connected to a 4.16-kV, three-phase, fourwire, grounded-wye dedicated distribution feeder. The load can be mode led by an impedance of ZL=(4.7+j9)/phase, wye-connected. The impedance of the phase conductors is (0.3+j1). Determine the following by using the phase A to neutral voltage as a reference and assume positive phase sequence: (a) Line currents for phases A, B, and C. (b) Line-to-neutral voltages for all three phases at the load. (c) Apparent. active, and reactive power dissipated per phase, and for all three phases in the load. (d) Active power losses per phase and for all three phases in the phase conductors.
A 60-Hz, single-phase two-wire overhead line has solid cylindrical copper conductors with a 1.5 cm diameter. The conductors are arranged in a horizontal configuration with 0.5 m spacing. Calculate in mH/km (a) the inductance of each conductor due to internal flux linkages only, (b) the inductance of each conductor due to both internal and external flux linkages, and (c) the total inductance of the line.
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In the power system whose single line diagram is shown below, the line cross section is 95 mm2, the intrinsic conductivity coefficient is 34m/ohm.mm2 and the inductive reactance of the line is given as 0.4 ohm/km. According to these values; a) Calculate the active, reactive and visible components of the currents passing through each line segment.b) Find the location and value of the largest voltage drop.
The line in Problem 5.14 has three ACSR 1113 kcmil conductors per phase. Calculate the theoretical maximum real power that this line can deliver and compare with the thermal limit of the line. Assume VS= VR =1.0 per unit and unity power factor at the receiving end. Problem 5.14 is the following in the picture.
the air-filled two-wire line has a characteristic impedance of 50 Ω and is operated at f = 3GHz .the load is ZL= 100 +j40Ω . for the line above, calculation ZL on the chart the line impedance 2.5 cm from the load , the admittance, the VSWR on the line, and distance from the load to the first voltage minimum and maximum.
Suppose a completely transposed 60-Hz three-phase line has flat horizontal phase spacing with 10 m between adjacent conductors. The conductors are 1,590,000 cmil ACSR with 54/3 stranding. Line length is 200 km. Assume the line voltage is 345 kV, at 60 Hz. i) Calculate the inductance in H/m. ii) The inductive reactance in ohm/m.
In the power system whose single line diagram is shown below, the line cross-section is 95 mm2, the intrinsic conductivity coefficient is 34 m/ohm.mm2 and the inductive reactance of the line is 0.4 ohm/km. According to these values; Calculate the active, reactive and visible components of the currents passing through each line segment.
Please solve part (b) (a) Suppose a completely transposed 60-Hz three-phase line has flat horizontal phase spacing with 10 m between adjacent conductors. The conductors are 1,590,000 cmil ACSR with 54/3 stranding. Line length is 200 km. Assume the line voltage is 345 kV, at 60 Hz. i) Calculate the inductance in H/m. ii) The inductive reactance in ohm/m. b) Now let’s replace the conductors of the 1,590,000 cmil conductors with two 795,000 cmil ACSR 26/2 conductors, as shown in Figure below. Bundle spacing is 0.40 m. Flat horizontal spacing is retained, with 10 m between adjacent bundle centers. Investigate that what will be the impact on transmission line parameter by changing the radius of conductor. And by applying the bundle conductors concept calculate the following; i) The inductive reactance of the line and compare it with part (a). iii) Also calculate the capacitive reactance line -to-neutral in ohm/m/phase. iv) The capacitive reactance line to…