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Small Signal Stability Assessment of Power Systems with Large-Scale Wind Farms

  • Research Article - Electrical Engineering
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Abstract

Compared to conventional synchronous generators, wind farms (WFs) have different impacts on power system small signal stability due to their physical and operational differences. In this paper, the small signal stability assessment of WF based on doubly fed induction generator (DFIG) is carried out. Control parameters are studied to investigate their impacts on the eigenvalues of a DFIG in a single machine infinite bus system. Besides, the effects of WF penetration on conventional power system-dominant modes are studied. It is shown that the DFIG-based WF would not considerably participate in electromechanical modes corresponding to the synchronous generators. It is concluded that the WF penetration into the power system has beneficial impacts on small signal stability.

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Abbreviations

A :

Turbine swap area

C DC Bus :

DC bus capacitor

c p :

Performance coefficient

d, q :

Subscriptions for d-q axis

D tg :

Shaft mutual damping

f :

Frequency

J t, J g :

Turbine and generator moment of inertias

K tg :

Shaft stiffness

L ls , L lr :

Stator and rotor leakage inductance

L m :

Mutual inductance

p :

Number of pole pairs

P e :

Electrical power

P m :

Turbine output power

R RL , L RL :

Grid coupling inductor

R s , R′ r :

Stator and rotor resistance

T e :

Electrical torque

T m :

Mechanical torque

V T :

Terminal Voltage

v w :

Wind speed

X droop :

Droop reactance

β :

Blade pitch angle

θ t ,θ g :

Angular displacement of turbine and generator

λ :

Ratio of blade tip speed to v w

ρ :

Air density

\({\varphi}\) :

Magnetic flux

ω :

Rotational speed

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Authors and Affiliations

  1. Shahid Rajaee Teacher Training University, Tehran, Iran

    Seyed Zeinolabedin Moussavi & Fazlolah Rastegar Kashkooli

  2. Department of Educational Affairs, Fars Province, Shiraz, Iran

    Fazlolah Rastegar Kashkooli

Authors
  1. Seyed Zeinolabedin Moussavi
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  2. Fazlolah Rastegar Kashkooli
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Correspondence to Seyed Zeinolabedin Moussavi.

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Moussavi, S.Z., Kashkooli, F.R. Small Signal Stability Assessment of Power Systems with Large-Scale Wind Farms. Arab J Sci Eng 38, 2493–2502 (2013). https://doi.org/10.1007/s13369-013-0562-9

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  • DOI: https://doi.org/10.1007/s13369-013-0562-9

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