Q: For the following OLD, take Sg = 50 MVA and VB = 22 kV at thetransmission line to find the short circuit current if a 3-ph fault occurs atthe middle of transmission line.15 MVA20 MVAX = j0.6 pu(15:35) kVG-EX = j0.3 pu25 MVA(40:15) kV15 MVA(6+j8) Q23 kVM18 kVT.LX = j0.5 puT1T2´x = j0.3 pu Q: For the following OLD, take Sp = 50 MVA and VB = 22 kV at the%3Dtransmission line to find the short circuit current if a 3-ph fault occurs atthe middle of transmission line.15 MVA20 MVAX = j0.6 puX = j0.3 pu(40:15) kV25 MVA(15:35) kV15 MVA(6+j8) N23 kV (GX = j0.5 puM) 18 kVx = j0.3 puT.LT1T2

Answered: Image /qna-images/answer/d14cbbfc-f5dd-4891-8c66-9fa1b0302d83.jpg

Q: For the following OLD, take SB 50 MVA and VB = 22 kV at the %3D transmission line to find the short circuit current if a 3-ph fault occurs at the middle of transmission line. 15 MVA 20 MVA X = j0.6 pu X = j0.3 pu (40:15) kV 25 MVA (15:35) kV 15 MVA (6+j8) Q 23 kV (G X = j0.5 pu 18 kV (м X = j0.3 pu T.L T1 T2

Q: For the following OLD, take SB 50 MVA and VB = 22 kV at the %3D transmission line to find the short circuit current if a 3-ph fault occurs at the middle of transmission line. 15 MVA 20 MVA X = j0.6 pu X = j0.3 pu (40:15) kV 25 MVA (15:35) kV 15 MVA (6+j8) Q 23 kV (G X = j0.5 pu 18 kV (м X = j0.3 pu T.L T1 T2

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 5.9P: The 100-km, 230-kV, 60-Hz, three-phase line in Problems 4.18 and 4.39 delivers 300 M VA at 218 kv to...

See similar textbooks

Similar questions

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.
Transmission line conductance is usually neglected in power system studies. True False
The 500-kV, 60-Hz, three-phase line in Problems 4.20 and 4.41 has a 300-km length. Calculate: (a) Zc, (b) (l), and (c) the exact ABCD parameters for this line. Assume a 50C conductor temperature.
The 100-km, 230-kV, 60-Hz, three-phase line in Problems 4.18 and 4.39 delivers 300 M VA at 218 kv to the receiving end at full load. Using the nominal circuit, calculate the ABCD parameters, sending-end voltage, and percent voltage regulation when the receiving-end power factor is (a) 0.9 lagging, (b) unity, and (c) 0.9 leading. Assume a 50C conductor temperature to determine the resistance of this line.
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
A three phase 220KV, 50Hz transmission line supplies a power of 100MW at a power factor of 0.8 lag at the receiving end. The Series resistance, reactance, and shunt susceptance per phase per Km are 0.082, 0.8 2, and 6 x 10-6mho respectively. Determine the efficiency and regulation for transmission line lengths of 60Km and 200Km (use π)
Refer to Figure 1. Using its equivalent reactance diagram, what is the total impedance of the system up to the fault point at the end of the receiving line (in per unit)? Below are the parameters: G1 : 9 MVA, 13 kV, j0.11 p.u. G2 : 8 MVA, 13 kV, j0.06 p.u. T1 : 9 MVA, 13/69 kV, j0.042 p.u. TL : 262 km, 0.031 ohm per km, 0.3 ohm per km, operates at 69 Base values are that of G1. Round your answer to 2 decimal places. what is the fault MVA of the system when a three-phase fault occurs at the receiving end?
A three-phase transposed line is composed of one ACSR 1,431,000 cmil, 47/7 Bobolink conductor per phase with flat horizontal spacing of 11 meters as shown in Figure (a). The conductors have a diameter of 3.625 cm and a GMR of 1.439 cm. The line is to be replaced by a three-conductor bundle of ACSR 477,000 cmil, 26/7 Hawk conductors having the same cross-sectional area of aluminum as the single-conductor line (Figure (b)). The conductors have a diameter of 2.1793 cm and a GMR of 0.8839 cm. The new line will also have a flat horizontal configuration, but it is to be operated at a higher voltage and therefore the phase spacing is increased to 14 m as measured from the center of the bundles as shown in Figure (b). The spacing between the conductors in the bundle is 45 cm. Determine the inductance and capacitance for both lines. Calculate the percentage change in the capacitance and inductance for both lines. Interpret these changes.
From the system as shown below with base of 100 MVA by neglecting all parallel admittance. (a) Determine [Ybus] Newton Raphson Method
A 3-phase overhead transmission line has a total series impedance per phase of 200 ∠80º ohms and a total shunt admittance of 0·0013∠90º siemen per phase. The line delivers a load of 80 MW at 0·8 p.f. lagging and 220 kV between the lines. Determine the sending end line voltage and current by rigorous method.
The parameters of transposed overhead transmission line are given as: self reactance Xs=0.4 ohm/km and mutual reactance Xm=0.1 ohm/km. The positive sequence reactance X1 and zero sequence reactance X0, respectively, in ohm/km are (A) 0.3, 0.2 (B) 0.5, 0.2 (C) 0.5, 0.6 (D) 0.3, 0.6
A 3-phase, overhead transmission line has a total series impedance per phase of 200 ohms and a total shunt admittance of 0.0013 siemens per phase. The line delivers a load of 80 MW at a 0.8 pf lagging and a 220 kV between the lines. Determine the sending end line voltage and current by Rigorous method.