1. Schemat zastępczy sieci do obliczeń zwarciowych
Gałąź |
Pocz |
Kon XI |
X0 |
Teta | ||
- |
- |
Ohm |
Ohm |
- | ||
LI |
PAK214 |
PLE214 28 |
.700 |
86.100 | ||
L2 |
PAK214 |
KOZ211 57 |
.400 |
172.200 | ||
L3 |
PAK214 |
MIL211 65 |
. 600 |
196.800 | ||
L4 |
KOZ211 |
MIL211 106 |
.600 |
319.800 | ||
L5 |
KOZ211 |
PLE214 41 |
.000 |
123.000 | ||
L6 |
KOZ411 |
MIL411 82 |
.500 |
247.500 | ||
MIL-T1 |
MIL411 |
T*1 36 |
.950 |
36.950 | ||
MIL-T1 |
T*1 |
MIL211 36 |
.950 |
36.950 |
1.818 | |
MIL-Tl |
T*1 999 |
.000 |
0.001 | |||
KOZ-Tl |
KOZ411 |
T*2 36 |
.950 |
36.950 | ||
KOZ-Tl |
T*2 |
KOZ211 36 |
.950 |
36.950 |
1.818 | |
KOZ-Tl |
T*2 999 |
.000 |
0.001 | |||
KOZ_GO |
KOZ411 160 |
.000 |
52.000 | |||
KOZ_Gl |
KOZ211 21 |
.511 |
6.991 | |||
PAK_G0 |
PAK214 60 |
.500 |
19.663 | |||
2. Macierz Zl (impedancyjna zwarciowa) | ||||||
MIL411 |
KOZ41 MIL211 KOZ211 PAK214 |
PLE214 T*1 |
T*2 | |||
0.00 |
0.00 |
0.00 0.00 |
0.00 |
0.00 0.00 |
0.00 | |
MIL411 |
108.91 |
55.55 |
45.54 18.38 : |
20.11 |
19.40 95.85 |
44.48 |
0.00 |
0.00 |
0.00 0.00 |
0.00 |
0.00 0.00 |
0.00 | |
KOZ411 |
55.55 |
66.07 |
25.37 17.66 ! |
14.92 |
16.04 50.84 |
49.09 |
0.00 |
0.00 |
0.00 0.00 |
0.00 |
0.00 0.00 |
0.00 | |
MIL211 |
45.54 |
25.37 |
34.98 10.46 : |
13.62 |
12.32 54.57 |
22.20 |
0.00 |
0.00 |
0.00 0.00 |
0.00 |
0.00 0.00 |
0.00 | |
KOZ211 |
18.38 |
17.66 |
10.46 13.84 |
9.43 |
11.25 18.70 |
21.41 |
0.00 |
0.00 |
0.00 0.00 |
0.00 |
0.00 0.00 |
0.00 | |
PAK214 |
20.11 |
14.92 |
13.62 9.43 ! |
23.72 |
17.84 22.44 |
16.03 |
0.00 |
0.00 |
0.00 0.00 |
0.00 |
0.00 0.00 |
0.00 | |
PLE214 |
19.40 |
16.04 |
12.32 11.25 : |
17.84 |
32.01 20.90 |
18.25 |
0.00 |
0.00 |
0.00 0.00 |
0.00 |
0.00 0.00 |
0.00 | |
T*1 |
95.85 |
50.84 |
54.57 18.70 : |
22.44 |
20.90 116.01. |
42.42 |
0.00 |
0.00 |
0.00 0.00 |
0.00 |
0.00 0.00 |
0.00 | |
T*2 |
44.48 |
49.09 |
22.20 21.41 ! |
16.03 |
18.25 42.42 |
62.48 |
3. Poziomy mocy zwarciowych
Szyny |
Vn |
Sz3F |
Iz3F |
Iz2F |
IzlF |
310 |
XI |
X0 |
- |
kV |
MVA |
kA |
kA |
kA |
kA |
Ohm |
Ohm |
MIL411 |
400.00 |
1616 |
2.333 |
2.020 |
3.045 |
3.045 |
108.91 |
32.49 |
KOZ411 |
400.00 |
2664 |
3.845 |
3.330 |
5.007 |
5.007 |
66.07 |
20.08 |
MIL211 |
220.00 |
1522 |
3.994 |
3.459 |
5.223 |
5.223 |
34.98 |
10.29 |
KOZ211 |
220.00 |
3846 |
10.094 |
8.742 |
13.191 |
13.191 |
13.84 |
4.09 |
PAK214 |
220.00 |
2244 |
5.890 |
5.101 |
6.691 |
6.691 |
23.72 |
15.20 |
PLE214 |
220.00 |
1663 |
4.365 |
3.781 |
3.466 |
3.466 |
32.01 |
56.92 |
Test Nr: 2
2. Dla zwarcia 3f w węźle:
PLE211 Oblicz:
' a) prądy płynące podczas zwarcia w linii:
L3
b) prądy płynące podczas zwarcia w transformatorze: KOZ-Tl
a) napięcia w węzłach:
PAK214,K0Z411
Dane są impedancje gałęzi i macierz impedancyjna zwarciowa.
Obliczenie prądów i napięć podczas trójfazowego zwarcia w węźle PLE214
Prąd w miejscu zwarcia:
* = .....= J'1’1'220 =: 4,365 TtA
Prąd w linii L3 (w sieci po zastosowaniu twierdzenia Thevenina):
Ji3 = -^PAK214 ~ ~^MIL211 _ j 77,872 - j 53,777 _ q 367 kA
« ixtJ......... ; Tj65,60 -
Prąd w linii L3 w sieci rzeczywistej:
jL3(rzecz) = = _q,367
• z Z
U = Z •/ = j 17,84-4,365 = j 77,872 kV
•*T*AK214 ~PAK214.PLE214 “zPLE214 J J
U = Z - •/ = j 12,32-4,365 = j 53,777 kV
■^TyULZII ~MIL211,PLE214 ~zPLE214 J ’ J
7 r