Small Signal Stability Analysis of Wind Turbine for Shaft Torsional Vibration Studies

Abstract:

One critical task in wind turbine shaft torsional vibration study involves the modelling of wind turbine and power grid. Focus on the mechanical rotational system of wind turbine, this paper provides three-mass shaft model upon which one wind turbine to infinite bus model can be developed. The model based on small signal stability analysis is used to study the wind turbine shaft torsional vibration. For this reason, this paper concentrates on the union model of stall wind turbine and power grid. The small-signal stability model includes the mechanical system and electrical system. Each of the component-blocks of the wind turbine and power grid is modelled separately so that one can easily expand and modify the model to suit their needs. Then, this is followed by one case study to explain how the small-signal stability model can be used to study wind turbine shaft torsional vibration issues.

• Periodical: Advanced Materials Research (Volumes 805-806)
• Pages: 347-363
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.805-806.347
• Online since: September 2013
• Authors: Jun Qi Feng*, Da Xie, Yu Jian Jia, Rui Lin Wang
• Keywords: Shaft Torsional Vibration, Small-Signal Stability Analysis Model, Three-Mass Shaft Model, Wind Turbine (WT)

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