28 23

2004 l2

Power System Technology

Vb128 NO23

Dec 2Oo4

10003673(2004)23005704 TM2497 A 4704044

( 100085)

DEVELoPMENT oF PoWER SYSTEM STABILIZER BASED oN PSS2A MoDEL oF m EE

YANG LiqiangWANG LiangZHAO HongguangWU YuquanFAN QianLIU Zenghuang

(China Electric Power Research InstituteHaidian DistrictBeijing 100085China)

ABSTRACTAt present in most of domestic PSSs the single

electrical power is used as their input signalwhen the po sitive

damping paramete~ ale provided for the low frequency oscillation

within 01 tO 02Hzthe antiregulation phenomenon may become

severeforthese PSSsandthereasonisthatthemechanical power

is difficult to be measured Assuming the mechanical po wer is

steady,at this time the electrical po wer is equal tO the accelerating

powerwhen the mechanical power is adjustedit is not appropriate

tO use the electrical po wer as the accelerating po werTo solve this

problemaccording to the PSS2A model of IEEEa new type of

PSS is developed in which the accelerating po wer which compo ses

revolution speed signal with electrical po wer signal is used as the

input sign althereforethedampingeffec t canbe ensuredwhilethe

an tiregulation problem is solved The results of dynam ic

simulation and that of the running tests in Dalate po wer plant in

Inner Mongolia Autonomous Region show that the developed PSS

po ssesses good damping effect an d Can effectively restrain the

an tiregulation phenomenon

KEY WoRDSPower system stabilizer fPSS)Low frequency

oscillationsAccelerating power Antiregulation Damping

Excitation system

(PSS)

0120Hz

IEEEPSS2A

PSS PSS

f

PSS

(PSS)

1

0103Hz1_2_3 (

+)

(Power System StabilizerPSS)

l40120Hz

5'6

PSS

PSS

PSS

(Automation Generation

ControlAGC)

l9mPSS

PSS

IEEE PSS2A

l1

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58 Power System Technology !

PSSPSS

2 PSS

PSS

1

PP

2 l

MN

1

1 PSS

Fig1 The block diagram of PSS model

based on accelerating power

M d co=

df

M_

dco ee (1)

(On dt

M dco+

too Uf

Sddt

=Ms + (2)

(2)

G( )

APING( )(Ms + )G( )

G( )

G=

AP

aea=APm

AP G( )

( + jG( )

(Ms +APe)G( ) (3)

PSSPSS

1PSS

3

31

PSS

1V

2

()

l

-

h-lz

U l l U lU

2

Fig2 The on-line frequency response characteristic of

excitation system without PSS being in use

32

PSS

PSS

1V

3

3 012Hz

55120PSS

)

i

P! _

i

_=

Pdz

3

Fig3 The on-line frequency respons e characteristic of

excitation system with PSS beingin nse

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28 23 59

33 PSS

PSS

L]

PSS45

PQ

4005400W

5W 38

6228205

20var 5var

22805

0V 5V

P|

Qvar

V

___ -- i 0}___

-I 1 } i i

l {

L j j

r 1 {

} j E i

4005

205

0 5 l0 l5 20 25 30 35 s

4 PSS

Fig4 The record graph of test results during tripping and

closing one transmission line without PSS being in use

P|

Qvar

U

_

L # t

J

I j

I

4005

205

0 5 l0 l5 2U 2 30 j ts

5 PSS

Fig5 The record graph of test results during tripping and

closing one transmission line with PSS being in use

4~115PSS

4PSS

1PSS

34 PSS

PSS( --00 1--00PSS

PSS)

lkW66

18kvarPSS

1Os

3kvar60s

PSS78

3kW

01kvar

(PSS

)3kW

} 015kvar

W

0 === ==== l_l_

Qvar

lOU5

305

UdV # j_ _ j

j j} ijjjj } l___ 05

6 PSS

Fig6 The record graph of antiregulation test of PSS

taking the electric power as the input signal

P|

Qvar

Ud

! Tf

L_l I -

- - l_ I j

J

r { r r r } j { _

l805

305

05

0 5 l0 l5 20 25 30 35 s

7 PSS

Fig7 The record graph of antiregulation test of PSS

taking the accelerating power as the input signal with

mechanical power suddenly increasing

Qvar

Ud

l805

305

05

0 5 l0 l5 20 25 30 35 s

8 PSS

Fig8 The record graph of antiregulation test of PSS

taking the accelerating power as the input signal with

mechanical power suddenly decreasing

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60 Power System Technology Vl0128 NO23

4

41

2004 3

PSS

9

j Hz

9

Fig9 The online frequency response characteristic of

excitation system without PSS being in Use

PSS

10

fo)

U-r1

__ l_ _____ ll_ ___l l 40 t t ? - t1 j 420 l I j =! j iI H

l0

Fig10 The online frequency response charactedsfic of

excitation system with PSS being in use

10 012Hz

55130PSS

4I2

PSS 25

1112 PSS

4 PSS 1

PSS

MW

Q|Mvar

U

h -

I_

-

I

2505

l005

05

ll PSS 25

Fig11 The record graph of 25 step response test

without PSS being in Use

MW

OMvat

U

} n

j-=- S-

l

805

5

0 2 4 6 8 l0 l2 l4 l 6 l8s

l2 PSS25

FIg12 The record graph of 25 step response test with PSS being in use

5

(1) PSS

(+)PSS

(2)PSS 0120Hz

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( 80 continued on page 80)

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Power System Technology Vb128 No23

6

IEC61850

TC57

10,111 IEC61850

IEC61850

IEC61850

IEC61850

IEC61850

IEC61850

[1 IEC61850fJ1

200125(9)815

Tan Wenshu An introduction to substation communicalion network

and system 1EC61850[J]PowerSystemTechnology200125(9)

8-l5

[2 IEC61850

200024(8)6264

Ren YanmingQin LOunYang QixunStudy on IEC61850

communication protocol architecture[JAutomation of Electric Power

Systems200024(8)62-64

f3 IEC61850

fJ1J200327(10)6165

Wu ZaijinHu MinqiangResearch on a substation automation system

based on 1EC61850[JPower System Technology200327(10)

6165

[4 1EC61580

fJ200428(10)5558

Wang KeyouZhang PeichaoYu Weiyonget a1Research on a new

fault information processing system using 1EC61580 communication

protocol[JPowerSystemTechnology200428(10)5558

[5 Andersson LBrand K PThe benefits of the coming standard

IEC61850 for communication in substations[A]Southern African

Conference on Power System Protection[C2000

6 (CSBTS

TC82)1EC61850IS12002

[7 IEC61850J

200428(11)4548

Zhang Jie Lu Dehong On the seman tic space in IEC61850

JAutomationofElectricPowerSystems200428(11)4548

[8 IEEE Std C3721996IEEE standard electrical power device function

numbers and contact designations[S

[9 57

2003[J1200428(4)1-3

[10 IECTC 57Strategic policy statement[S2003

[11 IECTC 57Coordinationofinformation objectsforelectricalpower

systems withinC based onC61850[S2003

20040917

(1969)

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system[JProceedings ofthe CSEE200222(101l2l7

[7 l5

[R12003

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Liu ZenghuangTask of generator excitation control and design idea

comparison[JPower System Technology199922(8)649

[9

fJ1200222(11)2022

ZhuFangLiuZenghuangGaoGuan ghuaTh einfluenceofPSS upo n

transient stability of the Th ree Gorges electric po wer system

[JProceedingsoftheCSEE200222(11)20-22

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Zhu Fan gLiu Zenghuan gGao GuanghuaTh e influence of po wer

system stabilizer on dynami c stability of Three Gorges electric po wer

system[JPower System Technology20