:
A .
, , .
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2
1
. . . .
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3
. D , . D , .
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2
. . . . C .
:
, .
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5
. :
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3
3
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4
, , (, , , .) ( , , ), ( , A, , .) , .
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5
T1
1
G1
Linha
2
T2
G2
Carga
G1
T1
1
Linha
2 T2
G2
Carga 19/03/2013
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, . . . ( ).
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6
, : Valor actual valor en pu
=
Valor base
; ( , , ).
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4 . B: ( 3φ), . B: ( ), . B B B B.
B: C .
B:
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7
Spu
Ipu
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S S B
=
Vpu
I
=
Zpu
I B
=
=
V V B Z Z B
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, , 3φBA ( ( 100 A). A).
S φ BASE =
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S 3φ BASE
3
⇔
S 3φ BASE = 3 ⋅ S φ BASE (MVA)
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8
, BA, : V φ BASE =
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V L BASE
3
⇔ V L BASE =
3 ⋅ V φ BASE
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, BA, , BA, . I B Z B
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=
S B
3 ⋅ V B =
V B
3 ⋅ I B
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=
(V B )2 S B
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9
B
∗
() B ( ):
I L I PU = = I B
Z PU
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3 ⋅ V B
∗
S PU
=
S B
3V P2 Z P S = = Z B V B2 S B
V L2 2 V B = S S B
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∗
V PU
=
2 V PU
S PU
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.. : S = V ⋅ I
PU
V PU
S 3 ⋅ V L
PU
∗
PU
= Z PU ⋅ I PU
.. . V PU ( L )
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=
V L V B ( L )
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=
3 ⋅ V P 3 ⋅ V B ( P )
= V PU ( P )
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10
. , (%), .
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V Z PU
=
Z V Z B
(V )
Z N = Z PU N Z B .
V
=
V
Z PU ⋅ Z B N
Z B
V
= Z PU ⋅
V 2 B V B N 2
S
(V ) B N B
S
S B N V BV N V Z PU = Z PU ⋅ V ⋅ N S B V B 19/03/2013
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11
% .. , ( ) . .. .
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.. . 3 φ ..,
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12
1. D
B . . 2. 3. D . 4. . 5. C (, ) B B . 19/03/2013
6. 7. 8.
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C .. . C .. .
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13
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14
2
V S C
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Z pu 2
=
Z pu1
((V B1 ))2 B 2
B2
S B1
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30
15
. 100 A. , , .
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