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 neutral in ohm/phase (Throughout the Line). 0.4 m795.000 cmil 26/2 ACSR10 m-10 mFig. Three-phase bundled conductor lineTable 1: Characteristics of Aluminum Cable, Steel, Reinforced (ACSR)AluminumSteclСорperEquivalentCircularMils orGeometricMeanWeightUltımate (poundsStrength(pounds)StrandStrandOutsideRad usCircutarMalsDiameter(inches)permile)CodeDiameterDiameterat 60 HzWordAluminum(inches)(inches)AWG.(feet)0 1819C 1744017350.16020.145661 70057 30049 80060 30025:5 0000.0849O 0814011570 09610 08741 8801. 8021.7351.7621 6020.06210 05950 05700.05880.053419JoreeThrasher762 312 00076192167 000722 156 000841 781 000KiwI19BlucbirdChukar48441951 0001 590 0001 000 C000 10300 10040.0977O 09490.09210.089210777102379 6999 16086218 0820.0520FalcorParrotPloverMartın0.17160.1673016280 158256 00053 20050 40047 60044 80043 10054191.5451.5061.4651.4241. 3821 338: 510500950 000900 000850 0000.05070.0493543191 431 000543191 351 0000.04790 046554191 272 0001 192 500015351919Pheasan:54800 000Grackle5430.14867500000.04501 2931 2461. 1961 1621 1461.0937 544701964791113 000O 08620.138440 20037 10034 200700 0000.04350 04200 04030 03910.03860.0368319FinchCurtewCardinal54014360.13840.13290.12911 033 5003650 000600 00054954 000900 000874 50054CenaryCrane330.13290 12910 1273566 000550 000500 000611259405 3995432 300012730121431 40028 5005433Condor795 0005401214Drake795 0002620.1749013601.108500 00031 20057700 0375

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Answered: 0.4 m 795.000 cmil 26/2 ACSR b' 10 m-…

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 4.28P: For the case of double-circuit, bundle-conductor lines, the same method indicated in Problem 4.27...

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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 neutral in ohm/phase (Throughout the Line).

0.4 m
795.000 cmil 26/2 ACSR
10 m-
10 m
Fig. Three-phase bundled conductor line
Table 1: Characteristics of Aluminum Cable, Steel, Reinforced (ACSR)
Aluminum
Stecl
Сорper
Equivalent
Circular
Mils or
Geometric
Mean
Weight
Ultımate (pounds
Strength
(pounds)
Strand
Strand
Outside
Rad us
Circutar
Mals
Diameter
(inches)
per
mile)
Code
Diameter
Diameter
at 60 Hz
Word
Aluminum
(inches)
(inches)
AWG.
(feet)
0 1819
C 1744
01735
0.1602
0.1456
61 700
57 300
49 800
60 300
25:5 000
0.0849
O 0814
01157
0 0961
0 0874
1 880
1. 802
1.735
1.762
1 602
0.0621
0 0595
0 0570
0.0588
0.0534
19
Joree
Thrasher
76
2 312 000
76
19
2167 000
72
2 156 000
84
1 781 000
KiwI
19
Blucbird
Chukar
4
84
4
19
51 000
1 590 000
1 000 C00
0 1030
0 1004
0.0977
O 0949
0.0921
0.0892
10777
10237
9 699
9 160
8621
8 082
0.0520
Falcor
Parrot
Plover
Martın
0.1716
0.1673
01628
0 1582
56 000
53 200
50 400
47 600
44 800
43 100
54
19
1.545
1.506
1.465
1.424
1. 382
1 338
: 510500
950 000
900 000
850 000
0.0507
0.0493
54
3
19
1 431 000
54
3
19
1 351 000
0.0479
0 0465
54
19
1 272 000
1 192 500
01535
19
19
Pheasan:
54
800 000
Grackle
54
3
0.1486
750000
0.0450
1 293
1 246
1. 196
1 162
1 146
1.093
7 544
7019
6479
1113 000
O 0862
0.1384
40 200
37 100
34 200
700 000
0.0435
0 0420
0 0403
0 0391
0.0386
0.0368
3
19
Finch
Curtew
Cardinal
54
01436
0.1384
0.1329
0.1291
1 033 500
3
650 000
600 000
54
954 000
900 000
874 500
54
Cenary
Crane
3
3
0.1329
0 1291
0 1273
566 000
550 000
500 000
6112
5940
5 399
54
32 300
01273
01214
31 400
28 500
54
3
3
Condor
795 000
54
01214
Drake
795 000
26
2
0.1749
01360
1.108
500 000
31 200
5770
0 0375

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