Relay

He thong SNmax 1500 Snmin/Snmax 0.8 1200 XOH/X1H 1.1 May bien ap S 15 U1/U2 115/24 Uk% 12.5 Duong day D1 D2 L 15 25 Loai day AC-75 AC-175 Z1 0.36+0.41j 0.15+0.37j Z0 0.56+1.02j 0.35+0.97j Phu tai 1 2 P 5 4 cos fi 0.9 0.8 tpt 0.5 1.5 Dac tinh relay 4 Tử số Mũ's mẫu

So cap Thu cap 115 24

80 2

Phan tinh toan Chon ty so cho BI1 va BI2 Ipt2 Ilvmax2 isdd2 Ipt1 Ilxmax1 Isdd1

120.28 168.39 200 253.93 355.50 400 He thong

Scb X1htmax X2htmax X0htmax

15 0.0100 0.0100 0.0110 MBA

Xb*

0.13 D1

Xd L Xd* X0d X0d*

Diem X1∑ I(3)Ni* I(3)Ni* X2∑ X0∑

D2

0.41 15 0.1602 1.02 0.3984 Imax

0.37 25 0.2409 0.97 0.6315

1 0.0725 13.793 4.977 0.0725 0.0735

2 0.1125 8.886 3.206 0.1125 0.1731

3 0.1526 6.554 2.365 0.1526 0.2727

4 0.1926 5.192 1.873 0.1926 0.3723

5 0.2327 4.298 1.551 0.2327 0.4719

6 0.2929 3.414 1.232 0.2929 0.6298

7 0.3531 2.832 1.022 0.3531 0.7877

8 0.4133 2.419 0.873 0.4133 0.9456

X(1)Δ m(1) I(1)1Ni* I(1)Ni* I(1)Ni* I(1)0Ni* I(1)0Ni X(1,1)Δ m(1,1) I(1,1)1Ni* I(1,1)Ni* I(1,1)Ni I(1,1)0Ni* I(1,1)0Ni

X1htmin Xohtmin X1∑ X2∑ X0∑ X(1)Δ I(1)1Ni I(1)Ni* I(1)Ni I(1)0Ni* I(1)0Ni X(1,1)Δ m(1,1) I(1,1)1Ni* I(1,1)Ni* I(1,1)Ni I(1,1)0Ni* I(1,1)0Ni X(2)Δ I(2)1Ni* I(2)Ni* I(2)Ni

0.1460 3 4.5767 13.730 4.9544 4.5767 1.6515 0.0365 1.5000 9.1745 13.7618 4.9659 4.5558 1.6439

0.2856 3 2.5114 7.5341 2.7186 2.5114 0.9062 0.0682 1.5112 5.5328 8.3612 3.0171 2.1798 0.7866

0.4253 3 1.7305 5.1914 1.8733 1.7305 0.6244 0.0978 1.5198 3.9933 6.0691 2.1900 1.4326 0.5170

0.5649 3 1.3200 3.9601 1.4290 1.3200 0.4763 0.1269 1.5251 3.1293 4.7724 1.7221 1.0669 0.3850

0.7046 3 1.0670 3.2009 1.1550 1.0670 0.3850 0.1558 1.5286 2.5741 3.9346 1.4198 0.8500 0.3067

0.9227 3 0.8227 2.4680 0.8906 0.8227 0.2969 0.1999 1.5330 2.0293 3.1108 1.1225 0.6441 0.2324

1.1408 3 0.6694 2.0082 0.7246 0.6694 0.2415 0.2438 1.5359 1.6753 2.5730 0.9285 0.5185 0.1871

1.3589 3 0.5643 1.6928 0.6108 0.5643 0.2036 0.2876 1.5379 1.4267 2.1941 0.7917 0.4339 0.1566

Imin 0.0125 0.0138 1 0.1375 0.1375 0.1388 0.2763 2.4169 7.2508 2.6164 2.4169 0.8721 0.0691 1.5000 4.8412 7.2618 2.6204 2.4096 0.8695 0.1375 3.6364 6.2984 2.2727

2 0.1775 0.1775 0.2384 0.4159 1.6851 5.0553 1.8242 1.6851 0.6081 0.1018 1.5053 3.5805 5.3899 1.9449 1.5284 0.5515 0.1775 2.8163 4.8779 1.7602

3 0.2176 0.2176 0.3380 0.5555 1.2935 3.8804 1.4002 1.2935 0.4667 0.1324 1.5117 2.8576 4.3198 1.5588 1.1192 0.4038 0.2176 2.2980 3.9803 1.4363

4 0.2576 0.2576 0.4376 0.6952 1.0495 3.1486 1.1361 1.0495 0.3787 0.1622 1.5167 2.3823 3.6131 1.3038 0.8828 0.3185 0.2576 1.9409 3.3617 1.2130

5 0.2977 0.2977 0.5372 0.8348 0.8830 2.6490 0.9559 0.8830 0.3186 0.1915 1.5204 2.0442 3.1081 1.1215 0.7288 0.2630 0.2977 1.6798 2.9095 1.0499

6 0.3579 0.3579 0.6951 1.0529 0.7088 2.1264 0.7673 0.7088 0.2558 0.2362 1.5254 1.6832 2.5675 0.9265 0.5721 0.2064 0.3579 1.3971 2.4199 0.8732

7 0.4181 0.4181 0.8529 1.2710 0.5920 1.7761 0.6409 0.5920 0.2136 0.2806 1.5290 1.4313 2.1884 0.7897 0.4708 0.1699 0.4181 1.1959 2.0713 0.7474

8 0.4783 0.4783 1.0108 1.4891 0.5083 1.5248 0.5502 0.5083 0.1834 0.3247 1.5316 1.2453 1.9074 0.6883 0.4000 0.1443 0.4783 1.0453 1.8106 0.6533

Bảo vệ cắt nhanh INngmaxD2 0.7620 Ikd2 0.9144 INngmaxD1 1.551 Ikd1 1.861 Bảo vệ cắt nhanh TTK INngmaxD2 0.5279 Ikd2 0.6335 INngmaxD1 1.1550 Ikd1 1.3860 Bảo vệ quá dòng có thời gian

Imax

D2 Ikđ1 Ikđ2 I(i) I*(i) tpt2(9) Tp2 t2(i) D1 t1(5) Tp1

9 0.5688 0.2694 0.7620 2.8282 1.8 0.1575

0.8000 0.0644 5 1.5510 2.7268

8

7

6

5

0.8730 3.2403

1.0219 3.7929

1.2321 4.5729

1.5510 5.7565

1.3262

0.9411

0.6327

0.3920

4 1.8734 3.2936 0.5228

2 3.2064 5.6371 0.1673

1 4.9772 8.7503 0.0681

6

5

8

Ikđ1 Ikđ2 I(i) I*(i)

9 0.5688 0.2694 0.4820 1.7891

3 2.3650 4.1579 0.3161 Imin 7

0.5502 2.0422

0.6409 2.3786

0.7673 2.8479

0.9559 3.5478

Tp2 t2(i)

0.1575 5.7244

3.9736

2.7046

1.7718

1.0873

0.0644 5 0.9559 1.6805 2.8222

4 1.1361 1.9975 1.7219

3 1.4002 2.4617 1.0174

2 1.7602 3.0946 0.6003

1 2.2727 3.9957 0.3440

I(i) I*(i) t1(i) D2

D1 Tp1 I(i) I*(i) t1(i)

Bảo vệ quá dòng TTK 120 0.12 60 0.06 1.8 2.1 Kiểm tra độ nhạy cắt nhanh kn1 1.6805 k0n1 6.5750 Ikd(1) Ikd(2) t02 t01

D1

D2 kn1 k0n1

1.7891 6.2735

Đề bài 9 0.4735 2.112 0.762 0.4735 1.1034

1.5770 3 0.4877 1.4630 0.5279 0.4877 0.1760 0.3313 1.5394 1.2424 1.9125 0.6901 0.3731 0.1346

9 0.5385 0.5385 1.1687 1.7072 0.4453 1.3358 0.4820 0.4453 0.1607 0.3687 1.5337 1.1023 1.6906 0.6100 0.3477 0.1255 0.5385 0.9284 1.6081 0.5803

Imax Dạng NM (3) IN(3)(kA) IN(1,1)(kA) (1,1) I0∑(1,1)(kA) IN(1)(kA) (1) I0∑(1)(kA) INmax(kA) 3I0∑max(kA)

1 4.9772

2 3.2064

3 2.3650

4 1.8734

5 1.5510

6 1.2321

7 1.0219

4.9659 1.6439 4.9544

3.0171 0.7866 2.7186

2.1900 0.5170 1.8733

1.7221 0.3850 1.4290

1.4198 0.3067 1.1550

1.1225 0.2324 0.8906

0.9285 0.1871 0.7246

1.6515 4.9772 4.9544

0.9062 3.2064 2.7186

0.6244 2.3650 1.8733

0.4763 1.8734 1.4290

0.3850 1.5510 1.1550

0.2969 1.2321 0.8906

0.2415 1.0219 0.7246

Imin Dạng NM IN(1,1)(kA) (1,1) I0∑(1,1)(kA) IN(1)(kA) (1) I0∑(1)(kA) (2) (2) IN (kA) INmin(kA) 3I0∑min(kA)

INmax(kA) t(2)(s)

INmax(kA) t(1)(s)

INmin(kA) t(2)(s)

INmin(kA) t(1)(s)

1

2

3

4

5

6

7

2.6204 0.8695 2.6164

1.9449 0.5515 1.8242

1.5588 0.4038 1.4002

1.3038 0.3185 1.1361

1.1215 0.2630 0.9559

0.9265 0.2064 0.7673

0.7897 0.1699 0.6409

0.8721 2.2727 2.2727 2.6085

0.6081 1.7602 1.7602 1.6546

0.4667 1.4363 1.4002 1.2115

0.3787 1.2130 1.1361 0.9556

0.3186 1.0499 0.9559 0.7890

0.2558 0.8732 0.7673 0.6193

0.2136 0.7474 0.6409 0.5097

N5

N6

N7

N8

N9

1.5510 0.39

1.2321 0.63

1.0219 0.94

0.8730 1.33

0.7620 1.8

N1

N2

N3

N4

N5

4.9772 0.07

3.2064 0.17

2.3650 0.32

1.8734 0.52

1.5510 0.8

N5

N6

N7

N8

N9

0.9559 1.09

0.7673 1.77

0.6409 2.7

0.5502 3.97

0.4820 0

N1

N2

N3

N4

N5

2.2727 0.34

1.7602 0.6

1.4002 1.02

1.1361 1.72

0.9559 0

N1 0.0681

N1 0.34

N1 0.91

8 0.8730

9 0.7620

0.7917 0.1566 0.6108

0.6901 0.1346 0.5279

0.2036 0.8730 0.6108

0.1760 0.7620 0.5279

8

9

0.6883 0.1443 0.5502

0.6100 0.1255 0.4820

0.1834 0.6533 0.5502 0.4330

0.1607 0.5803 0.4820 0.3764

N2 N3 N4 N5 N6 N7 N8 N9 0.1673 0.3161 0.5228 0.8000 0.39 0.63 0.94 1.33 1.8 N2

N3 0.6

N2

N4 1.02

N3 0.91

N5 1.72

N4 0.91

N6 2.82 1.09

N5 0.91

N7 1.77

N6 0.91

N8 2.7

N7 0.91

N9 3.97

N8 0.91

5.72 N9

0.91

0.91

Dòng ngắn mạch 5.00

4.98

4.50 4.00 3.50

3.21

3.00 IN 2.50

2.36

2.27

2.00

1.76

1.50

Ro Ro

1.87 1.55

1.40 1.14

1.00

1.23 0.96

0.77

0.50

1.02 0.64

0.00 Colu Colu Colu Colu Colu Colu Colu mn C mn D mn E mn F mn G mn H mn I

0.87 0.55

0.76 0.48

Colu mn J

Colu mn K

L

Dòng thứ tự không 5.00

4.95

4.50 4.00 3.50 3.00 3I0 2.50

2.61

2.00

2.72

Ro Ro

1.87 1.65

1.50

1.43 1.21 0.96

1.00

1.16 0.79

0.50

0.89 0.62

0.72 0.51

0.00 Colu Colu Colu Colu Colu Colu Colu mn C mn D mn E mn F mn G mn H mn I

0.61 0.43

0.53 0.38

Colu Colu mn J mn K

L

Đặc tính thời gian làm việc 6.00 5.50 5.00 4.50 3.97

Đặc tính thời gian làm việc 6.00 5.50 5.00 4.50 4.00 3.50 t(s) 3.00 2.50 2.00 1.50 1.00 0.50

3.97

2.82

1.77

1.72 1.09 0.80

1.02 0.34 0.07

0.60 0.17

0.32

0.52

2.70

0.39

1.33 0.94 0.63

0.00 Colum Colum Colum Colum Colum Colum Colum Colum nI nJ nK nL nM nN nO nP L

5.00 4.50 4.00 3.50

max

3.00 IN 2.50 2.00

min

1.50 1.00

Ikđ50=Kat*IN9max

0.50 4 4

0.2 2.8

15

25 16.3 32.5

0.00 Colum Colum Colum Colum Colum Colum Colum Colum nC nD E nF nG nH nI nJ lnmin CN

min max

m a x lC N

L(km)

Dòng thứ tự không 5.00 4.50 4.00 3.50 3.00

max

3*I0 2.50

min max

3.2 4

0 0.95

15

25 12.0 20.9

2.00

min

1.50 1.00 0.50 0.00 Colum Colum Colum Colum Colum Colum Colum nC nD nE nF nG nH nI m in lCN 01 L(km)

l CmNax 01

2

4

lu nI

2 1

lu I

Row 8 Row 17 0.87 0.55

0.76 0.48

Colu mn J

Colu mn K

Row 9 Row 18

0.61 0.43

0.53 0.38

Colu Colu mn J mn K

m việc 5.72

3.97

m việc 5.72

3.97

2.70

1.80

1.77 1.33 0.94 0.63

Colum Colum Colum Colum nN nO nP nQ

IN9max

Colum Colum Colum Colum nH nI nJ nK

không

Ikđ50=Kat*IN9max

olum Colum Colum Colum Colum G nH nI nJ nK

km)