Please solve it asap Q3) A three-phase line delivers 3 MW at 11 KV for a distance of 15 Km. Line loss 10% ofpower delivered, load power factor is 0.8,lagging, frequency is 50 Hz, 1.7 m equilateralspacing of conductors. Calculate the sending-end voltage and regulation. For skineffect R is greater than R. by 20%, conductor material has a resistivity p equal to1.126x10-8 2.m. (14 Pts)USRace 1-2RocQ4) A 60-Hz three phase transmission line is 195 mile long. The line inductance is 3.2mH/mi per phase and its capacitance is 0.0254 μF/mi per phase. The line delivers 100MW at 230 KV with 0.87 power factor lagging, assume the line is lossless. find theseries capacitor reactance and the percentage of compensation if a series capacitors areinstalled at midpoint of the line providing voltage regulation of 8%. The sending endvoltage magnitude is 240 KV. (14 Pts)26x2a^вол

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Q3) A three-phase line delivers 3 MW at 11 KV for a distance of 15 Km. Line loss 10% of power delivered, load power factor is 0.8,lagging, frequency is 50 Hz, 1.7 m equilateral spacing of conductors. Calculate the sending-end voltage and regulation. For skin effect R is greater than R. by 20%, conductor material has a resistivity p equal to ac 1.126x108 2.m. (14 Pts) 124 Вол US

Q3) A three-phase line delivers 3 MW at 11 KV for a distance of 15 Km. Line loss 10% of power delivered, load power factor is 0.8,lagging, frequency is 50 Hz, 1.7 m equilateral spacing of conductors. Calculate the sending-end voltage and regulation. For skin effect R is greater than R. by 20%, conductor material has a resistivity p equal to ac 1.126x108 2.m. (14 Pts) 124 Вол US

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

Chapter5: Transmission Lines: Steady-state Operation

Section: Chapter Questions

Problem 5.10P: The 500-kV, 60-Hz, three-phase line in Problems 4.20 and 4.41 has a 180-km length and delivers 1600...

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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.
Calculate the capacitance-to-neutral in F/m and the admittance-to-neutral in S/km for the three-phase line in Problem 4.18. Also calculate the line-charging current in kA/phase if the line is 110 km in length and is operated at 230 kV. Neglect the effect of the earth plane.
The 500-kV, 60-Hz, three-phase line in Problems 4.20 and 4.41 has a 180-km length and delivers 1600 M W at 475 kv and at 0.95 power factor leading to the receiving end at full load. Using the nominal circuit, calculate the (a) ABCD parameters, (b) sending-end voltage and current, (c) sending-end power and power factor, (d) full-load line losses and efficiency, and (e) percent voltage regulation. Assume a 50C. conductor temperature to determine the resistance of this line.
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?
Consider a long radial line terminated in its characteristic impedance Zc. Determine the following: (a) V1/I1, known as the driving point impedance. (b) | V2 |/V1|, known as the voltage gain, in terms of al. (c) | I2 |/| I1 |, known as the current gain, in terms of al. (d) The complex power gain, S21/S12, in terms of al. (e) The real power efficiency, (P21/P12)=, terms of al. Note: 1 refers to sending end and 2 refers to receiving end. (S21) is the complex power received at 2; S12 is sent from 1.
A 500 kV, 60 Hz uncompensated three-phase transmission line is 500 km long. The line has three ACSR 1113-kcmil (Finch) conductors per phase with parameters Current carrying capability of single ACSR 1113-kcmil (Finch) conductor is 1,110 A. Calculate the theoretical maximum (steady state stability limit) 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.
A 3-phase overhead transmission line delivers a load of 80 MW at0.8 p.f. lagging and 220 kV between the lines. Its total seriesimpedance per phase and total shunt admittance per phase are 200ohms with an angle of 80 degrees and 0.0013 mho with an angle of90 degrees per phase respectively. Using nominal-T method,determine the following:(i) A, B, C, D constants of the line(ii) Sending end voltage(iii) Sending end current(iv) Sending end power factor(v) Transmission efficiency of the line
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…
A bundled 500kv, 60Hz three phase completely transposed overhead line having three ACSR 1113kcmil(556.50mm) conductors per bundle,with 0.5m between conductors in the bundle. The horizontal phase spacings between bundle centers are 10,10,and 20m.Calculate the capacitance -to- neutral in F/m. and the admittance -to-neutral in S/km.
In three-phase short transmission line with end-of-line interphase voltage UR = 31,5kV , from the end of the line active power absorbed PR = 9000 kW, end of line power factor is cosφ = 0,70 (end) and the length of the line is l = 20km, The resistance of the line per km is R'= 0,125 Ohm/km, the reactance per km is X'= 0,375 Ohm/km.With the help of given information; a) Calculate the current drawn from the line (IR) as a phasor. b) Calculate the line-to-line-neutral voltage (VS) as a phasor, determine the effective line-to-line voltage (US) Calculate its value. c) Calculate the line head power factor, active and reactive power drawn from the line head, d) Draw the phasor diagram of the system. ..
A 3 phase, 50 Hz, 150 km line has a resistance, inductive reactance and capacitive shunt admittance of 0.1Ω, 0.5Ω, and 3 x 106 S per km per phase. If the line delivers 50MW at 110kV and 0.8 pf lagging, Assume a nominal phi circuit for the line determine: a. Sending end current b. Line value of the sending end voltage c. Transmission efficiency d. Voltage regulation e. Sending end power factor
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.