DocumentCode :
134372
Title :
Analysis and mitigation of subsynchronous oscillations in a radially-connected wind farm
Author :
Boopathi, V.P. ; Muzamil Ahamed, R. ; Kumudini Devi, R.P. ; Ramanujam, R.
Author_Institution :
Dept. of Electr. & Electron. Eng., Anna Univ., Chennai, India
fYear :
2014
fDate :
13-15 March 2014
Firstpage :
1
Lastpage :
7
Abstract :
Subsynchronous oscillations (SSO), especially, subsynchronous resonance are potential problems in series compensated power system. A fixed speed wind farm employing single cage induction generator (IG) and double cage IG connected to series compensated line are prone to SSR problem. This paper presents some investigations on SSO resulting from induction generator effect (IGE) with the wind turbine generator (WTG) modelled either as single cage IG or double cage IG. Eigenvalue analysis is carried out for various levels of series compensation for different sizes of wind farm with varying power outputs. Eigenvalue analysis is validated by the electromagnetic transient simulations using PSCAD/EMTDC software. The possibility of steady state SSR (IGE) and transient SSR is investigated in depth using PSCAD/EMTDC for the modified IEEE first bench mark (MFBM) model. SVC is employed for mitigating SSR. A new voltage regulator (VR) model of SVC is proposed and linear state space model of SVC is developed. Eigenvalue analysis conducted with the proposed voltage regulator reveals that the proposed VR model is more effective in mitigating SSR compared to VR models that are reported in the literature.
Keywords :
asynchronous generators; eigenvalues and eigenfunctions; static VAr compensators; voltage control; wind power plants; EMTDC; PSCAD; SVC; cage induction generator; eigenvalue analysis; induction generator effect; radially connected wind farm; series compensated power system; static VAr compensator; subsynchronous oscillation mitigation; subsynchronous resonance; voltage regulator; wind turbine generator; Analytical models; EMTDC; Eigenvalues and eigenfunctions; Reactive power; Static VAr compensators; Vectors; Wind farms; double cage induction generator; single cage induction generator; static var compensator (SVC); subsynchronous resonance (SSR) and induction generator effect (IGE);
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Power and Energy Systems Conference: Towards Sustainable Energy, 2014
Conference_Location :
Bangalore
Print_ISBN :
978-1-4799-3420-1
Type :
conf
DOI :
10.1109/PESTSE.2014.6805280
Filename :
6805280
Link To Document :
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