Yangi elektr uzatish liniyalari, nimstansiyalar va boshqa yuqori kuchlanishli agregatlar-bularni hammasi energetik tizimnitashkil etadi

4 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 AASHvni tanlaymiz.
Kabelni yotkizishni transheyada bajaramiz.

KTP-1:
GPP dan KTP-1gacha

S=3848 kVA, U_n=10 kV, L= 116 m = 0,166km
a) Hisobiy tok
I_p = 3848/(2 ^. 1,73 ^. 10)=111.2 A
b) Avariya rejimidagi tok
I_a = 3848/(1,73 ^. 10)=222.4 A
v) Kabelni ko‘ndalang kesim yuzasi , bunda j_e = 1,2 A/mm²
F=111.2 /1,2=92,6mm²
g) Kabel transheyada 2xAASHv (3x120) tanlanadi
I_d.d=240 A; ΔP=50 kVt/km;
d) Avariya rejimida I_d.d> I_a = 240 > 222.4 – etarli
e) YUklama koeffitsienti

K₃=111.2/240=0,46

z) Energiya isrofi

ΔW=50 ^. 0,46^2. 2 ^. 0,166=3.5 kVt
k)Linyada kuchlanish isrofi % da
ΔU= (r₀cosα+x₀*sinα)
ΔU= (0.32*0.8+0.083*0.6)=2.27%

KTP-1 dan obekt 15 gacha

S=2006kVA, U_n=0,4 kV, L= 10 m = 0,01 km
a) Hisobiy tok
I_p = 2006/(8 ^. 1,73 ^. 0,4)=362.3 A
b) Avariya rejimidagi tok
I_a = 2006/(4 ^. 1,73 ^. 0,4)=724.6A
v) Kabelni ko‘ndalang kesim yuzasi , gde j_e = 1,2 A/mm²
F=362. /1,2 ^.4 =75.5mm²
g) Kabelni yotkizishni transheyada bajaramiz 4xASB (3x95+1x50)
I_d.d=4x240 A; Δp=85 kVt/km;
d) Avariya rejimida 1^.I_d.d> I_a = 960 < 724.6– etarli
e) YUklama koeffitsienti

K₃=362.3/960=0,38
z) Quvvat isrofi
ΔW=85 ^. 0,38^2. 8 ^. 0,01=0.98 kVt
k) k)Linyada kuchlanish isrofi % da
ΔU= (r₀cosα+x₀*sinα)
ΔU= (0.326*0.8+0.06*0.6)=0.97%

KTP-1 dan obekt 13 gacha

S=356.kVA, U_n=0,4 kV, L= 40 m = 0,04 km
a) Hisobiy tok
I_p = 356/(4 ^. 1,73 ^. 0,4)=128.6A
b) Avariya rejimidagi tok
I_a = 356/(4 ^. 1,73 ^. 0,4)=257.2 A
v) Kabelni ko‘ndalang kesim yuzasi , gde j_e = 1,2 A/mm²
F=128.6. /1,2 ^.2 =53.5mm²
g) Kabelni yotkizishni transheyada bajaramiz 4xASB (3x50+1x25)
I_d.d=2x165 A; ΔR=77 kVt/km;
d) Avariya rejimida 1^.I_d.d> I_a = 330 < 257.2–
e) YUklama koeffitsienti

K₃=128.6/330=0,39
z) Quvvat isrofi
ΔW=77 ^. 0,38^2. 4 ^. 0,04=1.8 kVt
k) k)Linyada kuchlanish isrofi % da
ΔU= (r₀cosα+x₀*sinα)

ΔU= (0..62*0.8+0.061*0.6)=2.09%

KTP-1 dan obekt 12.11 gacha

S=95kVA, U_n=0,4 kV, L= 106 m = 0,106km
a) Hisobiy tok
I_p = 95/(4 ^. 1,73 ^. 0,4)=34.3 A
b) Avariya rejimidagi tok
I_a =95/(2 ^. 1,73 ^. 0,4)=68.6 A
v) Kabelni ko‘ndalang kesim yuzasi , gde j_e = 1,2 A/mm²
F=34.3. /1,2 ^. =28.6mm²
g) Kabelni yotkizishni transheyada bajaramiz 4xASB (3x25+1x16)
I_d.d=2x90 A; Δp=40 kVt/km;
d) Avariya rejimida 1^.I_d.d> I_a = 180< 68.6– etarli
e) YUklama koeffitsienti

K₃=34.3/180=0,2
z) Quvvat isrofi
ΔW=40 ^. 0,2^2. 4 ^. 0,106=0.67 kVt
k) k)Linyada kuchlanish isrofi % da
ΔU= (r₀cosα+x₀*sinα)
ΔU= (0.124*0.8+0.099*0.6)=3.47%

KTP-1 dan obekt 3 gacha

S=357.7kVA, U_n=0,4 kV, L= 5 m = 0,005km
a) Hisobiy tok
I_p = 357.7/(4 ^. 1,73 ^. 0,4)=130 A
b) Avariya rejimidagi tok
I_a =357.7/(2 ^. 1,73 ^. 0,4)=260 A
v) Kabelni ko‘ndalang kesim yuzasi , gde j_e = 1,2 A/mm²
F=130 /1,2*2 ^. =53.8mm²
g) Kabelni yotkizishni transheyada bajaramiz 4xASB (3x50+1x25)
I_d.d=2x165 A; Δp=77 kVt/km;
d) Avariya rejimida 1^.I_d.d> I_a = 330< 260– etarli
e) YUklama koeffitsienti

K₃=130/330=0.39
z) Quvvat isrofi
ΔW=77 ^. 0,39^2. 4 ^. 0,005=0.27 kVt
k) k)Linyada kuchlanish isrofi % da
ΔU= (r₀cosα+x₀*sinα)
ΔU= (0.62*0.85+0.061*0.62)=0.78%
KTP-1 dan obekt 4 gacha
S=357.7kVA, U_n=0,4 kV, L= 40 m = 0,04km
a) Hisobiy tok
I_p = 357.7/(4 ^. 1,73 ^. 0,4)=130 A
b) Avariya rejimidagi tok
I_a =357.7/(2 ^. 1,73 ^. 0,4)=260 A
v) Kabelni ko‘ndalang kesim yuzasi , gde j_e = 1,2 A/mm²
F=130 /1,2*2 ^. =53.8mm²
g) Kabelni yotkizishni transheyada bajaramiz 4xASB (3x50+1x25)
I_d.d=2x165 A; Δp=77 kVt/km;
d) Avariya rejimida 1^.I_d.d> I_a = 330< 260– etarli
e) YUklama koeffitsienti

K₃=130/330=0.39
z) Quvvat isrofi
ΔW=77 ^. 0,39^2. 4 ^. 0,04=2.5 kVt
k) k)Linyada kuchlanish isrofi % da
ΔU= (r₀cosα+x₀*sinα)
ΔU= (0.62*0.85+0.061*0.62)=2.23%

KTP-1 dan obekt 2 gacha

S=176kVA, U_n=0,4 kV, L= 130 m = 0,13km
a) Hisobiy tok
I_p = 176/(4 ^. 1,73 ^. 0,4)=64.7 A
b) Avariya rejimidagi tok
I_a =357.7/(2 ^. 1,73 ^. 0,4)=129.4A
v) Kabelni ko‘ndalang kesim yuzasi , gde j_e = 1,2 A/mm²
F=130 /1,2*2 ^. =27.4mm²
g) Kabelni yotkizishni transheyada bajaramiz 4xASB (3x35+1x16)
I_d.d=2x126 A; Δp=72 kVt/km;
d) Avariya rejimida 1^.I_d.d> I_a = 252< 129.4– etarli
e) YUklama koeffitsienti

K₃=64.7/252=0.25
z) Quvvat isrofi
ΔW=72 ^. 0,25^2. 4 ^. 0,13=2.34 kVt
k) k)Linyada kuchlanish isrofi % da
ΔU= (r₀cosα+x₀*sinα)
ΔU= (0.89*0.85+0.064*0.62)=4%

KTP-1 dan obekt 9 gacha

S=420.7kVA, U_n=0,4 kV, L= 40 m = 0,4km
a) Hisobiy tok
I_p = 420.7/(4 ^. 1,73 ^. 0,4)=152 A
b) Avariya rejimidagi tok
I_a =420.7/(2 ^. 1,73 ^. 0,4)=304A
v) Kabelni ko‘ndalang kesim yuzasi , gde j_e = 1,2 A/mm²
F=152 /1,2*2 ^. =63.3mm²
g) Kabelni yotkizishni transheyada bajaramiz 4xASB (3x70+1x35)
I_d.d=2x184 A; Δp=80 kVt/km;
d) Avariya rejimida 1^.I_d.d> I_a = 368< 304– etarli
e) YUklama koeffitsienti

K₃=152/368=0.45
z) Quvvat isrofi
ΔW=80 ^. 0,45^2. 4 ^. 0,4=2.6 kVt
k) k)Linyada kuchlanish isrofi % da
ΔU= (r₀cosα+x₀*sinα)
ΔU= (0.443*0.85+0.06*0.62)=5.8/%

KTP-2:
GPP dan KTP-2gacha

S=2029.5 kVA, U_n=10 kV, L= 168 m = 0,168km
a) Hisobiy tok
I_p = 2029/(2 ^. 1,73 ^. 10)=58.6 A
b) Avariya rejimidagi tok
I_a = 3848/(1,73 ^. 10)=117.2 A
v) Kabelni ko‘ndalang kesim yuzasi , bunda j_e = 1,2 A/mm²
F=58.6 /1,2=48,6mm²
g) Kabel transheyada 2xAASHv (3x50) tanlanadi
I_d.d=140 A; ΔP=44 kVt/km;
d) Avariya rejimida I_d.d> I_a = 140 > 117.2 – etarli
e) YUklama koeffitsienti

K₃=58.6/140=0,42

z) Energiya isrofi

ΔW=44 ^. 0,42^2. 2 ^. 0,168=3.5 kVt
k)Linyada kuchlanish isrofi % da
ΔU= (r₀cosα+x₀*sinα)
ΔU= (0.62*0.8+0.061*0.6)=2.9%
KTP-2 dan obekt 10 gacha
S=420.7kVA, U_n=0,4 kV, L= 10 m = 0,01km
a) Hisobiy tok
I_p = 420.7/(4 ^. 1,73 ^. 0,4)=152 A
b) Avariya rejimidagi tok
I_a =420.7/(2 ^. 1,73 ^. 0,4)=304A
v) Kabelni ko‘ndalang kesim yuzasi , gde j_e = 1,2 A/mm²
F=152 /1,2*2 ^. =63.3mm²
g) Kabelni yotkizishni transheyada bajaramiz 4xASB (3x70+1x35)
I_d.d=2x184 A; Δp=80 kVt/km;
d) Avariya rejimida 1^.I_d.d> I_a = 368< 304– etarli
e) YUklama koeffitsienti

K₃=152/368=0.45
z) Quvvat isrofi
ΔW=80 ^. 0,45^2. 4 ^. 0,01=065 kVt
k) k)Linyada kuchlanish isrofi % da
ΔU= (r₀cosα+x₀*sinα)
ΔU= (0.443*0.85+0.06*0.62)=1.2/%

KTP-1 dan obekt 1 gacha

S=176kVA, U_n=0,4 kV, L= 120 m = 0,12km
a) Hisobiy tok
I_p = 176/(4 ^. 1,73 ^. 0,4)=64.7 A
b) Avariya rejimidagi tok
I_a =357.7/(2 ^. 1,73 ^. 0,4)=129.4A
v) Kabelni ko‘ndalang kesim yuzasi , gde j_e = 1,2 A/mm²
F=130 /1,2*2 ^. =27.4mm²
g) Kabelni yotkizishni transheyada bajaramiz 4xASB (3x35+1x16)
I_d.d=2x126 A; Δp=72 kVt/km;
d) Avariya rejimida 1^.I_d.d> I_a = 252< 129.4– etarli
e) YUklama koeffitsienti

K₃=64.7/252=0.25
z) Quvvat isrofi
ΔW=72 ^. 0,25^2. 4 ^. 0,12=2.16 kVt
k) k)Linyada kuchlanish isrofi % da
ΔU= (r₀cosα+x₀*sinα)
ΔU= (0.89*0.85+0.064*0.62)=3.8%

KTP-2 dan obekt 5 gacha

S=357.7kVA, U_n=0,4 kV, L= 45 m = 0,045km
a) Hisobiy tok
I_p = 357.7/(4 ^. 1,73 ^. 0,4)=130 A
b) Avariya rejimidagi tok
I_a =357.7/(2 ^. 1,73 ^. 0,4)=260 A
v) Kabelni ko‘ndalang kesim yuzasi , gde j_e = 1,2 A/mm²
F=130 /1,2*2 ^. =53.8mm²
g) Kabelni yotkizishni transheyada bajaramiz 4xASB (3x50+1x25)
I_d.d=2x165 A; Δp=77 kVt/km;
d) Avariya rejimida 1^.I_d.d> I_a = 330< 260– etarli
e) YUklama koeffitsienti

K₃=130/330=0.39
z) Quvvat isrofi
ΔW=77 ^. 0,39^2. 4 ^. 0,045=2.1 kVt
k) k)Linyada kuchlanish isrofi % da
ΔU= (r₀cosα+x₀*sinα)
ΔU= (0.62*0.85+0.061*0.62)=2.36%

KTP-2 dan obekt 6 gacha

S=247kVA, U_n=0,4 kV, L= 90 m = 0,9km
a) Hisobiy tok
I_p = 247/(4 ^. 1,73 ^. 0,4)=89.2 A
b) Avariya rejimidagi tok
I_a =357.7/(2 ^. 1,73 ^. 0,4)=178.4 A
v) Kabelni ko‘ndalang kesim yuzasi , gde j_e = 1,2 A/mm²
F=89.2 /1,2*2 ^. =37.2mm²
g) Kabelni yotkizishni transheyada bajaramiz 4xASB (3x50+1x25)
I_d.d=2x126 A; Δp=77 kVt/km;
d) Avariya rejimida 1^.I_d.d> I_a = 165< 178.4– etarli
e) YUklama koeffitsienti

K₃=89.2/330=0.27
z) Quvvat isrofi
ΔW=77*0.27^2. 4 ^. 0,09=2.02 kVt
k) k)Linyada kuchlanish isrofi % da
ΔU= (r₀cosα+x₀*sinα)
ΔU= (0.62*0.85+0.061*0.62)=2.78%

KTP-2 dan obekt 7 gacha

S=247kVA, U_n=0,4 kV, L= 36 m = 0,036km
a) Hisobiy tok
I_p = 247/(4 ^. 1,73 ^. 0,4)=89.2 A
b) Avariya rejimidagi tok
I_a =357.7/(2 ^. 1,73 ^. 0,4)=178.4 A
v) Kabelni ko‘ndalang kesim yuzasi , gde j_e = 1,2 A/mm²
F=89.2 /1,2*2 ^. =37.2mm²
g) Kabelni yotkizishni transheyada bajaramiz 4xASB (3x50+1x25)
I_d.d=2x126 A; Δp=77 kVt/km;
d) Avariya rejimida 1^.I_d.d> I_a = 165< 178.4– etarli
e) YUklama koeffitsienti

K₃=89.2/330=0.27
z) Quvvat isrofi
ΔW=77*0.27^2. 4 ^. 0,036=0.8 kVt
k) k)Linyada kuchlanish isrofi % da
ΔU= (r₀cosα+x₀*sinα)
ΔU= (0.62*0.85+0.061*0.62)=1.75%

KTP-2 dan obekt 8 gacha

S=247kVA, U_n=0,4 kV, L= 80 m = 0,08km
a) Hisobiy tok
I_p = 247/(4 ^. 1,73 ^. 0,4)=89.2 A
b) Avariya rejimidagi tok
I_a =357.7/(2 ^. 1,73 ^. 0,4)=178.4 A
v) Kabelni ko‘ndalang kesim yuzasi , gde j_e = 1,2 A/mm²
F=89.2 /1,2*2 ^. =37.2mm²
g) Kabelni yotkizishni transheyada bajaramiz 4xASB (3x50+1x25)
I_d.d=2x126 A; Δp=77 kVt/km;
d) Avariya rejimida 1^.I_d.d> I_a = 165< 178.4– etarli
e) YUklama koeffitsienti

K₃=89.2/330=0.27
z) Quvvat isrofi
ΔW=77*0.27^2. 4 ^. 0,08=1.8 kVt
k) k)Linyada kuchlanish isrofi % da
ΔU= (r₀cosα+x₀*sinα)
ΔU= (0.62*0.85+0.061*0.62)=2.6%

KTP-2 dan obekt 14 gacha

S=412kVA, U_n=0,4 kV, L= 16 m = 0,016km
a) Hisobiy tok
I_p = 412/(4 ^. 1,73 ^. 0,4)=148.8 A
b) Avariya rejimidagi tok
I_a =357.7/(2 ^. 1,73 ^. 0,4)=297.6 A
v) Kabelni ko‘ndalang kesim yuzasi , gde j_e = 1,2 A/mm²
F=148.8 /1,2*2 ^. =62mm²
g) Kabelni yotkizishni transheyada bajaramiz 4xASB (3x70+1x35)
I_d.d=2x184 A; Δp=80 kVt/km;
d) Avariya rejimida 1^.I_d.d> I_a = 368< 297.6– etarli
e) YUklama koeffitsienti

K₃=148.8/368=0.4
z) Quvvat isrofi
ΔW=80*0.4^2. 4 ^. 0,016=0.82 kVt
k) k)Linyada kuchlanish isrofi % da
ΔU= (r₀cosα+x₀*sinα)
ΔU= (0.443*0.8+0.061*0.6)=1.04%

KTP-2: