Navoiy kon-metallurgiya kombinati navoiy davlat konchilik instituti


Variant 1. Kabel liniyalarni tanlash


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5.3. Variant 1. Kabel liniyalarni tanlash.
0,4 kV uchun alyuminiy tomirli uch fazali ASB, AOSB markali turtta tomirli kabel tanlaymiz

10 kV kuchlanish uchun uch fazali kabel AASHV ni tanlaymiz.

Kabelni yotqizishni transheyada bajaramiz.
KTP-1:

GPP dan KTP-1gacha



S=726+356.1=1082.1 kVA, Un=10 kV, L= 285 m = 0,285km

a) Hisobiy tok



Ip = 1082.1/(2 . 1,73 . 10)=31.2 A

b) Avariya rejimidagi tok



Ia = 1082.1/(1,73 . 10)=62.5 A

v) Kabelni ko‘ndalang kesim yuzasi , bunda je = 1,2 A/mm2



F=31.2 /1,2=26 mm2

g) Kabel transheyada 2xAASHv (3x25) tanlanadi



Id.d=90 A; ΔR=40 kVt/km ; K=31.35 mln. so‘m /km

d) Avariya rejimida Id.d> Ia = 90 > 62.5 – etarli

e) YUklama koeffitsienti



K3=31.2/90=0.34

j) Kabelni narxi K`=K . L . n



K`=31.35 . 0.285 . 2 = 17.18 mln. so‘m

z) Energiya isrofi



ΔW=40 . 0,342. 2 . 0.285=2.63 kVt

k) Bir yil uchun elektr energiya isrofi narxi



UPE=2.63 .180100=0.47 mln. so‘m / yil

KTP-1 danRU1 gacha



S=356.1kVA, Un=0,4 kV, L= 15 m = 0,015 km

a) Hisobiy tok



Ip = 356.1/(4 . 1,73 . 0,4)=128.6 A

b) Avariya rejimidagi tok



Ia = 356.1/(2 . 1,73 . 0,4)=257.2 A

v) Kabelni ko‘ndalang kesim yuzasi , gde je = 1,2 A/mm2



F=128.6 /1,2 .2 =53.6mm2

g) Kabelni yotkizishni transheyada bajaramiz 4xASB (3x95+1x50)



Id.d=2x240 A; ΔR=85 kVt/km; K=36.5 mln. so‘m /km

d) Avariya rejimida 1,3 .Id.d> Ia = 624 < 514.4– etarli

e) YUklama koeffitsienti



K3=257.2 /480=0.53

j) Kabelni narxi K`=K . L . n



K`=36.5 . 0,015 . 4 = 2.19 mln. so‘m

z) Quvvat isrofi



ΔW=85 . 0,532. 4 . 0,015=1.43 kVt

k) Bir yil uchun elektr energiya isrofi narxi



UPE=1.43 . 180100=0.258 mln. so‘m / yil
KTP-2:

GPP dan KTP-2gacha



S=979.29+443.9+83+390.1=1896.29 kVA, Un=10 kV, L= 170 m = 0,17 km

a) Ip = 1896.29/(2 . 1,73 . 10)=54.8 A

b) Ia = 1896.29/(1,73 . 10)=109.6 A

v) Kabelni ko‘ndalang kesim yuzasi F=54.8 /1,2=45.6mm2

g) Kabelni yotqizishni transheyada bajaramiz 2xAASHv (3x50)

Id.d=140 A; ΔR=44 kVt/km; K=1,61 mln. so‘m /km

d) Avariya rejimida Id.d> Ia = 140 > 109,6 – etarli

e) K3=54,8 /140=0,39

j) K`=1,61 . 0,17 . 2 = 0,54 mln. so‘m

z) ΔW=44 . 0,392. 2 . 0,17=2,27 kVt

k) UPE=2,27. 180100=0,4 mln. so‘m / yil

KTP-2 dan RU2 gacha

S=443.9kVA, Un=0,4 kV, L= 65 m = 0,065 km

a) Ip = 443.98/(4 . 1,73 . 0,4)=160.3 A

b) Ia = 443.9/(2 . 1,73 . 0,4)=320.7 A

v) Kabelni ko‘ndalang kesim yuzasi F=160.3 /1,2 =133.58mm2

g) Kabelni yotqizishni transheyada bajaramiz 4xASB (3x120+1x70)

Id.d=2x305 A; ΔR=88 kVt/km; K = 54 mln. so‘m /km

d) Avariya rejimida 1,3 .Id.d> Ia = 793 > 641.4 – etarli

e) K3=320.7/610=0,52

j) K`=54 . 0,065 . 4 = 14,04 mln.so‘m

z) ΔW=88 . 0,522. 4 . 0,065=6,18 kVt

k) UPE=6,18 . 180100=1,11 mln. so‘m / yil


KTP-2 dan RU3 gacha

S=83 kVA, Un=0,4 kV, L= 105 m = 0,105 km

a) Ip = 83/(2 . 1,73 . 0,4)=60 A

b) Ia = 83/( 1,73 . 0,4)=120A

v) Kabelni ko‘ndalang kesim yuzasi F=60 /1,2 =50 mm2

g) Kabelni yotqizishni transheyada bajaramiz 4xASB (3x50+1x25)

Id.d=165 A; ΔR=77 kVt/km; K = 23,5 mln. so‘m /km

d) Avariya rejimida 1,3 .Id.d> Ia = 214,5 > 120 – etarli

e) K3=60/214,5=0,28

j) K`=77 . 0,105 . 4 = 32,34 mln.so‘m

z) ΔW=77 . 0,282. 4 . 0,105=2,53 kVt

k) UPE=2,53 . 180100=0,455 mln. so‘m / yil

KTP-2 dan RU4 gacha

S=390,1 kVA, Un=0,4 kV, L= 140 m = 0,140 km

a) Ip = 390,1/(4 . 1,73 . 0,4)=141 A

b) Ia = 390,1/(2 . 1,73 . 0,4)=282A

v) Kabelni ko‘ndalang kesim yuzasi F=141 /1,2 =117,5 mm2

g) Kabelni yotqizishni transheyada bajaramiz 4xASB (3x120+1x70)

Id.d=2x305 A; ΔR=88 kVt/km; K = 54 mln. so‘m /km

d) Avariya rejimida 1,3 .Id.d> Ia = 793 > 564 – etarli

e) K3=141/305=0,46

j) K`=54 . 0,14 . 4 = 49,28 mln.so‘m

z) ΔW=88 . 0,462. 4 . 0,14=2,53 kVt

k) UPE=2,53 . 180100=0,455 mln. so‘m / yil


KTP-3:
GPP dan KTP -3gacha

S=834.9+403.8=1238.7 kVA, Un=10 kV, L= 25 m = 0,025 km

a) Ip = 1238.7 /(2 . 1,73 . 10)=35.8 A

b) Ia = 3344,2 /(1,73 . 10)=71.6 A

v) Kabelni ko‘ndalang kesim yuzasi F=35.8/1,2=30 mm2

g) Kabelni yotqizishni transheyada bajaramiz 2xAASHv (3x35)

Id.d=2*115 A; ΔR=42 kVt/km; K=36 mln. so‘m / km

d) Avariya rejimida Id.d> Ia = 115> 71.6 – etarli

e) K3=35.8/115=0,31

j) K`=36 . 0,025 . 4 = 3.6 mln.so‘m

z) ΔW=42 . 0,312. 4 . 0,025=0.4 kVt

k) UPE=0.4 . 180100=0.72 mln. so‘m / yil


GPP dan RP-1 gacha

S=2338 kVA, Un=10 kV, L= 140 m = 0,140 km

a) Ip = 2338/(2 . 1,73 . 10)=67.5 A

b) Ia = 904,2/(1,73 . 10)=135.1 A

v) Kabelni ko‘ndalang kesim yuzasi F=67.5/1,2=55mm2

g) Kabelni yotkizishni transheyada bajaramiz 2xAASHv (3x50)

Id.d=140 A; ΔR=44 kVt/km; K=1,61 mln. so‘m /km

d) Avariya rejimida Id.d> Ia = 140 > 135.1 – etarli

e) K3=67.5/140=0,48

j) K`=1,61 . 0,14 . 2 = 0.45 mln. so‘m

z) ΔW=44 . 0,482. 2 . 0,14=2.83 kVt

k) UPE=2.83 . 180100=5.11 mln. so‘m / yil


KTP-3 dan RU-5 gacha

S=403.8 kVA, Un=0,4 kV, L= 85 m = 0,085 km

a) Ip = 403.8/(4 . 1,73 . 0,4)=145.8 A

b) Ia = 403.8/(2 . 1,73 . 0,4)=291.7A

v) Kabelni ko‘ndalang kesim yuzasi F=145.8 /1,2 =121.56 mm2

g) Kabelni yotqizishni transheyada bajaramiz 4xASB (3x120+1x70)

Id.d=2x305 A; ΔR=88 kVt/km; K = 54 mln. so‘m /km

d) Avariya rejimida 1,3 .Id.d> Ia = 793 > 583.4 – etarli

e) K3=145.8/305=0.47

j) K`=54 . 0,085 . 4 = 18.36 mln.so‘m

z) ΔW=88 . 0,472. 4 . 0,085=6.6 kVt

k) UPE=6.6 . 180100=1.19 mln. so‘m / yil

KTP-4:

KTP-4 RP2 dan ta’minlanadi, shunday RP2 dan 6- sexni sinxron dvigatellari ta’minlanadi.



GPP danRP2 gacha

S=1485+1411=2896 kVA, Un=10 kV, L= 70 m = 0,07 km

a) Ip = 2896 /(4 . 1,73 . 10)= 41.8A

b) Ia = 2896 /(2*1,73 . 10)=83.6 A

v) Kabelni ko‘ndalang kesim yuzasi F=41.8/1,2=34.8mm2

g) Kabelni yotkizishni transheyada bajaramiz 2xAASHv (3x35)

Id.d=2*115 A; ΔR=42 kVt/km; K=36 mln. so‘m / km

d) Avariya rejimida Id.d> Ia = 115 > 83.6 – etarli

e) K3=41.8/115=0,36

j) K`=36 . 0,07 . 4 = 10.08 mln. so‘m

z) ΔW=42 . 0,362. 4 . 0,07=1.52 kVt

k) UPE=1,52 . 180100=0.27mln. so‘m / yil

RP2 danKTP-4gacha

S=1411 kVA, Un=10 kV, L= 10 m = 0,01 km

a) Ip = 1411/(2 . 1,73 . 10)=40.7 A

b) Ia = 1411/(1,73 . 10)=81.5 A

v) Kabelni ko‘ndalang kesim yuzasi F=40.7/1,2=33.9mm2

g) Kabelni yotkizishni transheyada bajaramiz 2xAASHv (3x35)

Id.d=115 A; ΔR=42 kVt/km; K=36 mln

d) Avariya rejimida Id.d> Ia = 115 > 81.5 – etarli

e) K3=40.7/115=0.35

j) K`=36 . 0,01 . 2 = 0,72 mln. so‘m

z) ΔW=42 . 0,352. 2 . 0,01=0.1 kVt

k) UPE=0,1 . 180100=0.018 mln. so‘m / yil

KTP-5:

GPP dan KTP-5 gacha



S=867.3+576.8=1444.1 kVA, Un=10 kV, L= 195 m = 0,195 km

a) Ip = 1444.1 /(2 . 1,73 . 10)=41.7A

b) Ia = 1233.6 /(1,73 . 10)=83.4 A

v) Kabelni ko‘ndalang kesim yuzasi F=41.7/1.2=34.7mm2

g) Kabelni yotkizishni transheyada bajaramiz 2xAASHv (3x35)

Id.d=115 A; ΔR=42 kVt/km; K=36 mln

d) Avariya rejimida Id.d> Ia = 115 > 83.4 – etarli

e) K3=41.7/115=0.36

j) K`=36 . 0.195 . 2 = 14.04 mln. so‘m

z) ΔW=42 . 0,362. 2 . 0.195=2.1 kVt

k) UPE=2.1*180100=0.38 mln. so‘m / yil

KTP-5 dan RU6 gacha

S=576.8kVA, Un=0,4 kV, L= 65 m = 0,065km

a) Ip = 576.8/(4 . 1,73 . 0,4)=208.3 A

b) Ia = 576.8/(2 . 1,73 . 0,4)=416.7 A

v) Kabelni ko‘ndalang kesim yuzasi F=208.3/1,2 .2 =86.8 mm2

g) Kabelni yotkizishni transheyada bajaramiz 4xASB (3x95+1x50)

Id.d=2x240 A; ΔR=85 kVt/km; K=36.5 mln. so‘m /km

d) Avariya rejimida 1,3 .Id.d> Ia = 624> 416.7 – etarli

e) K3=416.7/480=0.85

j) K`=36.5. 0,065 . 2 = 4.7 mln. so‘m

z) ΔW=85 . 0,852. 2 . 0,065=7.9 kVt

k) UPE=7.9. 180100=1.43 mln. so‘m / yil

1-variant kabel liniyani texnik iqtisodiy ko‘rsatkichlarni tanlash.

a) Kapital mablag‘i:



K`l=17.18+2.19+0.54+14.04+32.34+49.28+3.6+18.36+0.45+10.8+0.72+14.04+4.7=170 mln. so‘m

b) Kabel liniyada bir yillik elektr energiya isrofi narxi:



Upel`=0.47+0.258+0.4+1.11+0.455+0.455+0.72+1.19+5.11+0.018+0.27+0.38+1.43 =12.2 mln. so‘m /yil

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