On Dinh He Thong Dien P2
of 12
Embed Size (px)
description
Ổn định hệ thống điện
Transcript of On Dinh He Thong Dien P2
-
Chng 2: NG C TNH CNG SUT
2.1 HT tng qut:- Khi nim-Phng php tnh ton
=
=
+=
+=n
kikik
ik
kiii
ii
ii
n
kikik
ik
kiii
ii
ii
ik
ik
ZEE
ZEQ
ZEE
ZEP
1
2
1
2
)cos(.cos
)sin(.sin
F1Fn
Fi
Fk
Si
-
Chng 2: NG C TNH CNG SUT
2.2 HT gm hai nh my:
F1 B1 D B2 F2PT
E1 XF1XB1 ZD
ZB2 XF2 E2YD/2ZPT
-
Chng 2: NG C TNH CNG SUT
2.2 HT gm hai nh my:s dng nguyn l xp chng
Z12Z10 Z20E1
P1, Q1 P2, Q2
E2
121212
2111
11
21
12
2
11
11
11111
Z.
Z
..
+=
=
+==
EEE
Z
E
Z
EE
QjPIES
)cos(Z.cos
Z
)sin(Z.sin
Z
)cos(Z.cos
Z
121212
2111
11
21
1
121212
2111
11
21
1
121212
2111
11
21
1
=
+=
+=
EEEQ
EEEP
EEEP
-
Chng 2: NG C TNH CNG SUT
2.2 HT gm hai nh my:s dng nguyn l xp chng
Z12Z10 Z20E1
P1, Q1 P2, Q2
E2
121212
2122
22
22
12
1
22
22
22222
Z.
Z
..
+=
=
+==
EEE
Z
E
Z
EE
QjPIES
)cos(Z.cos
Z
)sin(Z.sin
Z
121212
2111
22
22
2
121212
2122
22
22
2
+=
+=EEEQ
EEEP P1 + P2 = PPT Q1 + Q2 = QPT P,Q = f (12 ) v cc ng TCS
-
Chng 2: NG C TNH CNG SUT2.3 H thng in n gin:1. HT c tn tht v ph ti
F B1 D B2 HPT
EF XFXB1 ZD
ZB2 XH UHYD/2ZPT
-
Chng 2: NG C TNH CNG SUT2.3 H thng in n gin:1. HT c tn tht v PTs dng nguyn l xp chng
EF Z12 UHZ10 Z20EF
P1, Q1 P2, Q2
1212
F11
11
2F
1211
1111
Z.
Z
..
+=
=
+==
UEE
Z
U
Z
EE
QjPIES
FF
F
)cos(Z.cos
Z
)sin(Z.sin
Z
1212
F11
11
2F
1
1212
F11
11
2F
1
=
+=UEEQ
UEEP
-
Chng 2: NG C TNH CNG SUT2.3 H thng in n gin:2. HT khng tn tht
F B1 D B2 H
EF XF XB1 XD XB2 XH UH
EFXH UHXF UF
-
Chng 2: NG C TNH CNG SUT2.3 H thng in n gin:2. HT khng tn tht
MP cc n: Xd = Xq ; EF = Eq .
E X UI,
HF
U
E
qE
UUP
UEP
UEP
F
q
q
sinX
.
sinX.
sinX.
H
'
d
'd
'
'
=
=
= Eq
U
I
I.Xdcos
d
q
EEq
I.Xdcos
I.XHcos
H
UF
-
Chng 2: NG C TNH CNG SUT2.3 H thng in n gin:2. HT khng tn tht _ MP cc n:
E X UI,
2sin.2
sinX
.
2sin'.'
2sin
X.
2sin'.'
2sin
X.
'cos.'
''
sin.
sin.cos.
)cos(..cos..
2
H
2
d
'
2
d
'
'
'
'
'
=
=
=
===
=====
Hd
dFqU
dd
ddqE
dd
ddqE
d
q
d
qqd
dq
dq
XXXUUUP
XXXXUUEP
XXXXUUEP
XUE
XUE
II
XU
XUII
IUIUP
F
q
q
P
-
Chng 2: NG C TNH CNG SUT2.3 H thng in n gin:2. HT khng tn tht _ MP cc li:
EQ
U
I
I.Xq
d
q
EqI(Xd-Xq)
2sin.2
sinX
.
2sin'.'
2sin
X.
2sin.2
sinX.
2sin.2
sinX.
cos.sin.
sin.cos.
)cos(..cos..
2
H
2
d
'
2
d
2
d
'
'
=
=
+=
=
===
=====
Hq
qFqU
dq
dqqE
dq
qdqE
dq
dqqE
d
q
d
qqd
qq
dq
XXXUUUP
XXXXUUEP
XXXXUUEP
XXXXUUEP
XUE
XUE
II
XU
XUII
IUIUP
F
q
q
q
-
Chng 2: NG C TNH CNG SUT
2.4 c tnh tnh ph ti:P, Q = f ( U )
PT c nh gi qua h s hiu ng iu chnhdP/dU ; dQ/dU
C 2 loi :- c tnh tnh thc t
P,Q
U
1
1
Ugh
-
Chng 2: NG C TNH CNG SUT
2.4 c tnh tnh ph ti:- c tnh tnh thay th:ZPT = hsU = U0 : PPT = P0 ; QPT = Q0mc ni tip
mc song song
U0
RPT
XPT
U0
RPTXPT
)sin.(cos.0
2
jSUXjRZ mptptpt +=+=
0
20
2
QUZ
PUR
mpt
mpt
=
=
pt
pt
XUQ
RUP
2
2
=
=
