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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

=

=