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Given a three-phase load of 125 MW at power factor of 0.8 lagging, operating at 69kV, with a transmission line efficiency of 97% and voltage regulation of 95%, and the line length of 50 km, design a transmission line system and determine the best conductor configuration, conductor resistance and inductance, and conductor radius values to achieve the efficiency and voltage regulation set. Assume a two-bundled conductor configuration with GMR of 0.0496 m and bundle spacing of 30 cm.

Given a three-phase load of 125 MW at power factor of 0.8 lagging, operating at 69kV, with a transmission line efficiency of 97% and voltage regulation of 95%, and the line length of 50 km, design a transmission line system and determine the best conductor configuration, conductor resistance and inductance, and conductor radius values to achieve the efficiency and voltage regulation set. Assume a two-bundled conductor configuration with GMR of 0.0496 m and bundle spacing of 30 cm.

Power System Analysis and Design (MindTap Course List)
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
Chapter7: Symmetrical Faults
Section: Chapter Questions
Problem 7.21MCQ
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Given a three-phase load of 125 MW at power factor of 0.8 lagging, operating at 69kV, with a transmission line efficiency of 97% and voltage regulation of 95%, and the line length of 50 km, design a transmission line system and determine the best conductor configuration,
conductor resistance and inductance, and conductor radius values to achieve the efficiency
and voltage regulation set. Assume a two-bundled conductor configuration with GMR of 0.0496 m and bundle spacing of 30 cm.

TABLE A.3 Electrical characteristics of bare aluminum conductors steel-reinforced (ACSR) Resistance Ac, 60 Hz Reactance per conductor 1-ft spacing, 60 Hz Aluminum area, Stranding Layers of Outside diameter, aluminum Dc, 20"C, 20°C, a/mi 50*c, Q/mi GMR D, ft Inductive Xa, Capacitive x 10ם Code word cmil in MO.mi 2/mi 0,476 Al/St Waxwing Partridge Ostrich Merlin 266.800 266.800 18/1 0,609 0,642 0,680 0,684 0,721 0,741 0,743 0,783 0,814 0,0646 0,0640 0,0569 0,0512 0,0507 0,0504 0,0433 0,0430 0,0361 0,0359 0,0357 0,0355 0,0309 0,0308 0,0307 0,0269 0,0268 0,3488 0,3452 0,3070 0,2767 0,2737 0,2719 0,2342 0,2323 0,1957 0,1943 0,1931 0,1919 0,1679 0,1669 0,1663 0,1461 0,1454 0,1172 0,1188 0,0997 0,0988 0,0924 0,0861 0,0856 0,0762 0,0751 0,0684 0,0673 0,0623 0,0612 0,0476 0,3831 0,3792 0,3372 으3037 0,3006 0,2987 0,2572 0,2551 0,2148 0,2134 0,2120 0,2107 0,1843 0,1832 0,1826 0,1603 0,1596 0,1284 0,1302 0,1092 으1082. 0,1011 0,0941 으,0937 으0832 0,0821 0,0746 으0735 0,0678 으,0667 0,0515 0,0198 0,0217 0,0229 0,0222 0,0243 0,0255 0,0241 0,0264 0,0264 0,1090 으1074 0,1057 0,1055 0,1040 0,1032 0,1031 0,1015 0,1004 0,0992 0,0988 0,0980 0,0981 으,0969 0,0965 0,0950 0,0946 0,0912 0,0925 0,0897 0,0800 0,0885 26/7 0,465 300.000 336.400 26/7 18/1 26/7 30/7 18/1 26/7 18/1 24/7 26/7 30/7 18/1 24/7 25/7 24/7 26/7 0,458 0,462 0,451 0,445 0,452 0,441 0,441 0,432 0,430 0,424 0,432 0,423 Linnet 336.400 Oriole Chickadee Ibis Pelican Flicker Hawk Hen Osprey Parakeet Dove 336.400 397 500 397.500 477.000 477.000 0,846 0,0284 477.000 0,858 0,883 0,879 0,914 0,927 0,977 0,0289 0,0304 0,0284 0,0306 0,0314 0,0327 0,0335 0,0373 0,0352 0,0386 0,0402 0,0402 0,0415 0,0436 0,0444 0,0466 0,0470 으,0494 0,0498 0,0523 0,0586 477.000 2 556.500 556.500 556.500 636.000 636.000 795.000 795.000 954.000 0,420 Rook Grosbeak Drake 0,415 0,412 0,399 0,406 0,395 0,390 0,390 0,386 0,380 0,378 0,372 0,371 0,365 0,364 0,358 0,344 0,990 26/7 45/7 45/7 54/7 45/7 45/7 54/19 45/7 54/19 45/7 54/19 45/7 54/19 84/19 1,108 1,063 1,165 1,196 1,213 0,0215 0,0217 0,0181 0,0180 0,0167 0,0155 0,0155 0,0136 0,0135 0,0121 Tern Rail Cardinal Ortolan Bluejay Finch 954.000 1.033.500 0,0874 0,0866 0,0855 0,0847 0,0837 0,0829 0,0822 0,0814 0,0776 L113.000 1,259 1.113.000 1,293 1,345 1,382 1,427 1,465 1,502 1,545 1,762 Bittern 1.272.000 3. Pheasant Bobolink Plover Lapwing Falcon Bluebird 1.272.000 1.431.000 1.431.000 0,0120 1.590.000 0,0109 0,0108 0,0080 1.590.000 2,156.000 * Most used multilayer sizes. ** Data, by permission, trom Aluminum Association, Aluminum Electrical Conductor Handbook, 2d ed., Washington, D.C., 1982. opiado de: 1 Grainger, W.D. Stevensan, Power System Analysis, MeGraw-Hill, 199. -1/5
Transcribed Image Text:TABLE A.3 Electrical characteristics of bare aluminum conductors steel-reinforced (ACSR) Resistance Ac, 60 Hz Reactance per conductor 1-ft spacing, 60 Hz Aluminum area, Stranding Layers of Outside diameter, aluminum Dc, 20"C, 20°C, a/mi 50*c, Q/mi GMR D, ft Inductive Xa, Capacitive x 10ם Code word cmil in MO.mi 2/mi 0,476 Al/St Waxwing Partridge Ostrich Merlin 266.800 266.800 18/1 0,609 0,642 0,680 0,684 0,721 0,741 0,743 0,783 0,814 0,0646 0,0640 0,0569 0,0512 0,0507 0,0504 0,0433 0,0430 0,0361 0,0359 0,0357 0,0355 0,0309 0,0308 0,0307 0,0269 0,0268 0,3488 0,3452 0,3070 0,2767 0,2737 0,2719 0,2342 0,2323 0,1957 0,1943 0,1931 0,1919 0,1679 0,1669 0,1663 0,1461 0,1454 0,1172 0,1188 0,0997 0,0988 0,0924 0,0861 0,0856 0,0762 0,0751 0,0684 0,0673 0,0623 0,0612 0,0476 0,3831 0,3792 0,3372 으3037 0,3006 0,2987 0,2572 0,2551 0,2148 0,2134 0,2120 0,2107 0,1843 0,1832 0,1826 0,1603 0,1596 0,1284 0,1302 0,1092 으1082. 0,1011 0,0941 으,0937 으0832 0,0821 0,0746 으0735 0,0678 으,0667 0,0515 0,0198 0,0217 0,0229 0,0222 0,0243 0,0255 0,0241 0,0264 0,0264 0,1090 으1074 0,1057 0,1055 0,1040 0,1032 0,1031 0,1015 0,1004 0,0992 0,0988 0,0980 0,0981 으,0969 0,0965 0,0950 0,0946 0,0912 0,0925 0,0897 0,0800 0,0885 26/7 0,465 300.000 336.400 26/7 18/1 26/7 30/7 18/1 26/7 18/1 24/7 26/7 30/7 18/1 24/7 25/7 24/7 26/7 0,458 0,462 0,451 0,445 0,452 0,441 0,441 0,432 0,430 0,424 0,432 0,423 Linnet 336.400 Oriole Chickadee Ibis Pelican Flicker Hawk Hen Osprey Parakeet Dove 336.400 397 500 397.500 477.000 477.000 0,846 0,0284 477.000 0,858 0,883 0,879 0,914 0,927 0,977 0,0289 0,0304 0,0284 0,0306 0,0314 0,0327 0,0335 0,0373 0,0352 0,0386 0,0402 0,0402 0,0415 0,0436 0,0444 0,0466 0,0470 으,0494 0,0498 0,0523 0,0586 477.000 2 556.500 556.500 556.500 636.000 636.000 795.000 795.000 954.000 0,420 Rook Grosbeak Drake 0,415 0,412 0,399 0,406 0,395 0,390 0,390 0,386 0,380 0,378 0,372 0,371 0,365 0,364 0,358 0,344 0,990 26/7 45/7 45/7 54/7 45/7 45/7 54/19 45/7 54/19 45/7 54/19 45/7 54/19 84/19 1,108 1,063 1,165 1,196 1,213 0,0215 0,0217 0,0181 0,0180 0,0167 0,0155 0,0155 0,0136 0,0135 0,0121 Tern Rail Cardinal Ortolan Bluejay Finch 954.000 1.033.500 0,0874 0,0866 0,0855 0,0847 0,0837 0,0829 0,0822 0,0814 0,0776 L113.000 1,259 1.113.000 1,293 1,345 1,382 1,427 1,465 1,502 1,545 1,762 Bittern 1.272.000 3. Pheasant Bobolink Plover Lapwing Falcon Bluebird 1.272.000 1.431.000 1.431.000 0,0120 1.590.000 0,0109 0,0108 0,0080 1.590.000 2,156.000 * Most used multilayer sizes. ** Data, by permission, trom Aluminum Association, Aluminum Electrical Conductor Handbook, 2d ed., Washington, D.C., 1982. opiado de: 1 Grainger, W.D. Stevensan, Power System Analysis, MeGraw-Hill, 199. -1/5
TABLE AJ Electrical characteristics of bare aluminum conductors steel-reinforced (ACSR)t Reistance Reaetanse per eenduetor 1-ft apesinE 6o la Ar. 60 He Caperitive Layer of outaide aluminum dinmeter, in o00 n soc. Aluminum Sartine 20C. OMR Iaduetive emil Wawine Farteide Oatrie Marlin Limaet O. 0.042 0.064 0.0040 0.3831 0.372 0.476 0.465 0.438 0.402 0.4 0.443 0.432 0.441 0.441 0,42 0.430 0.34 0.1000 200. H00 300.000 30.400 3M. 400 a. 400 39. 0 397,300 477.000 477.000 477.000 477.000 0.342 0.0217 o.1074 0.3070 0.3372 a.0229 0.1057 a.na12 0.0307 0.0222 0.0243 0.2767 0.273 0.371 0.2342 0.3323 0.721 0.300 0.1040 Oriale Chickadee Thie Feliean Fieker 30/7 0.741 0.743 0.783 0.2987 0.2372 0.0433 0.02 0.1031 0.0430 24/7 26/7 20/7 0.1943 D. 1931 O.1919 0.1619 0.169 0.0064 0.02 0.029 0.1004 0.0992 0.098 0.516 Haw 0.0339 0.0357 0.2120 Hen 0.424 0.000 Ovpy Parskeet 0.030s 0.1843 0.432 0.0ORI 0.009 a36, 300 24/7 26/7 24/7 26/7 26/7 45/7 45/7 0.423 6. S00 Deve 0.0314 0.0027 0.0335 0.0373 0.0352 0.420 Rak Granbeak Deake 0.977 0.0 D. 160a 0.1596 O. 124 a.14 0.000 0.0946 0.0912 0.0925 G36.000 0.0209 0.0208 0.021s 0.0217 0.143 755.000 763,000 954.000 54.000 0.412 0.399 0.405 0.295 0.390 0.a00 a.1172 0.11M 0.0957 Tern Hall Candinal Ortalan ilutjay Finch 1.O3 1.165 1.196 1.213 1.20 1.293 1345 1.382 1.427 0.1302 0.1092 0.0402 0.0402 0.0180 0.0690 45/7 0.0155 0.01ss 0.0024 0.061 0.0830 0.094 0.0937 1.113.000 1.212.000 S4/19 o.a0 istern Plat 0.0 1.72.000 0.075 0.00 0.0821 0.0746 0372 0.371 0.365 45/7 Babulina Piover Lapwine Falcue Husbirt 1.431.000 1.431.000 1,390.000 1.290.000 2.156.000 0.0837 0.0820 0.0822 0.0470 a.0120 0.0073 0.063 0.0G12 0.04 43/7 1.302 0.34 0.0067 0.0513 6.03 0.358 0.0814 /19 0.05 0.344 'Most used muitilayer sizes ata, by pennitsion, trom Amin Aasialiu 4umi ieical Condecto tato 2i si Washinn DC 12
Transcribed Image Text:TABLE AJ Electrical characteristics of bare aluminum conductors steel-reinforced (ACSR)t Reistance Reaetanse per eenduetor 1-ft apesinE 6o la Ar. 60 He Caperitive Layer of outaide aluminum dinmeter, in o00 n soc. Aluminum Sartine 20C. OMR Iaduetive emil Wawine Farteide Oatrie Marlin Limaet O. 0.042 0.064 0.0040 0.3831 0.372 0.476 0.465 0.438 0.402 0.4 0.443 0.432 0.441 0.441 0,42 0.430 0.34 0.1000 200. H00 300.000 30.400 3M. 400 a. 400 39. 0 397,300 477.000 477.000 477.000 477.000 0.342 0.0217 o.1074 0.3070 0.3372 a.0229 0.1057 a.na12 0.0307 0.0222 0.0243 0.2767 0.273 0.371 0.2342 0.3323 0.721 0.300 0.1040 Oriale Chickadee Thie Feliean Fieker 30/7 0.741 0.743 0.783 0.2987 0.2372 0.0433 0.02 0.1031 0.0430 24/7 26/7 20/7 0.1943 D. 1931 O.1919 0.1619 0.169 0.0064 0.02 0.029 0.1004 0.0992 0.098 0.516 Haw 0.0339 0.0357 0.2120 Hen 0.424 0.000 Ovpy Parskeet 0.030s 0.1843 0.432 0.0ORI 0.009 a36, 300 24/7 26/7 24/7 26/7 26/7 45/7 45/7 0.423 6. S00 Deve 0.0314 0.0027 0.0335 0.0373 0.0352 0.420 Rak Granbeak Deake 0.977 0.0 D. 160a 0.1596 O. 124 a.14 0.000 0.0946 0.0912 0.0925 G36.000 0.0209 0.0208 0.021s 0.0217 0.143 755.000 763,000 954.000 54.000 0.412 0.399 0.405 0.295 0.390 0.a00 a.1172 0.11M 0.0957 Tern Hall Candinal Ortalan ilutjay Finch 1.O3 1.165 1.196 1.213 1.20 1.293 1345 1.382 1.427 0.1302 0.1092 0.0402 0.0402 0.0180 0.0690 45/7 0.0155 0.01ss 0.0024 0.061 0.0830 0.094 0.0937 1.113.000 1.212.000 S4/19 o.a0 istern Plat 0.0 1.72.000 0.075 0.00 0.0821 0.0746 0372 0.371 0.365 45/7 Babulina Piover Lapwine Falcue Husbirt 1.431.000 1.431.000 1,390.000 1.290.000 2.156.000 0.0837 0.0820 0.0822 0.0470 a.0120 0.0073 0.063 0.0G12 0.04 43/7 1.302 0.34 0.0067 0.0513 6.03 0.358 0.0814 /19 0.05 0.344 'Most used muitilayer sizes ata, by pennitsion, trom Amin Aasialiu 4umi ieical Condecto tato 2i si Washinn DC 12
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