Excitation System Modelling by 069MSP716

8/12/2019 Excitation System Modelling by 069MSP716

1/38

Power System Stability & Control

MODELLING

OF

EXCITATION SYSTEM

COMPONENTS

By:- Suraj Regmi(069MSP716)


2/38

MODELLING OF EXCITATION SYSTEM COMPONENTS

Excitation System/069MSP716


3/38

Exciters



4/38

Exciters



5/38

Exciters


F

From above equations

Here,


6/38

Exciters



7/38

Exciters



8/38

Exciters


This equation represents the input

output relationship of exciter


9/38

Exciters



10/38

Exciters



11/38

Exciters



12/38

Exciters



13/38

Exciters



14/38

Exciters



15/38

Exciters



16/38

Exciters



17/38

Exciters



18/38

Exciters



19/38

Exciters



20/38

Amplifiers .



21/38

Amplifiers .


b l


22/38

Excitation System Stabilizing Circuit


i i bili i i i


23/38

Excitation System Stabilizing Circuit


i d d i d i i


24/38

Windup and Non- Windup Limits


Wi d d N Wi d Li i


25/38



Wi d d N Wi d Li i


26/38



Wi d d N Wi d Li it


27/38




28/38

G ti F ti


29/38

Gating Functions


T i l lt t d d L d C t


30/38

Terminal voltage transducer and Load Compensator


MODELLING OF COMPLETE EXCITATION SYSTEM


31/38



A



32/38



A



33/38



IEEE standardized models are intended for use in transientstability and small-signal stability studies.

The principle input signal to each of the excitation system is theoutput voltage Vc is subtracted form the voltage regulatorreference Vrefand the output Vs of the power system stabilizer, ifused , is added to produce the actuating signal which controls the

excitation system.Additional signal such as the underexcitation limiter output (VUEL),come into play only during the extreme or unusual conditions.

Under steady state, Vs =0 and Vref Takes on a value to thesynchronous machine loading condition so that the error signal

results in the required field voltage Efd .Two of them are illustrated here,

Type DC1A exciter Model

Type AC1A exciter Model

TYPE DC1A EXCITATION SYSTEM MODEL


34/38





35/38




36/38

TYPE AC1A EXCITATION SYTEM MODEL


37/38

TYPE AC1A EXCITATION SYTEM MODEL


P S t St bilit & C t l


38/38

Power System Stability & Control

!!!Thank You !!!

Any queries ???

Excitation System Modelling by 069MSP716

Documents