Influence of a Wind Farm on Power System Oscillatory Stability
Omar AL-Masari1, Musa AL-Masari2
1Omar Almasari, School of Information Technology and Electrical Engineering, University of Queensland, Brisbane, Australia.
2Musa Almasari, Electrical Engineering, University of Windsor, Windsor, Ontario, Canada.
Manuscript received on August 01, 2014. | Revised Manuscript Received on August 10, 2014. | Manuscript published on August 20, 2014. | PP: 5-10 | Volume-2, Issue-9, August 2014. | Retrieval Number: I0495082914/2014©BEIESP
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Abstract: This paper deals with the influence of wind turbine generators on oscillatory stability. Examining low-frequency oscillatory stability is important for understanding the weakest mode that leads to oscillatory problems. The performance of three types of wind generators, the doubly fed induction generator, the squirrel cage induction generator, and the permanent magnet synchronous generator, when connected to a grid was examined. Eigenvalue analysis and time-domain analysis helped to identify oscillatory instability problems in the wind farm. Moreover, the advantages of a high voltage direct current link (HVDC) for improving instability issues was studied. The simulation results show the significance of the DC link in improving the stability of the system by isolating the wind farm at the point of common couple from a fault event. The simulation software tool DIgSILENT Power Factory was used for all modelling of wind farms, HVDC, and the IEEE 14-bus test system.
Keywords: Wind Turbine Generators, Oscilatory Stability, DFIG, PMSG, SCIG, HVDC, IEEE 14-bus test system, Eigenvalue analysis, DIgSILENT Power Factory.