Effect of Different Turbine-generator Shaft Models on the Sub-synchronous Resonance Phenomenon in the Double Cage Induction Generator Based Wind Farm

This paper focuses on the turbine-generator shaft models of double-cage induction generator (ig) based wind farm and its impact on the sub-synchronous resonance phenomenon. for this purpose, six different shaft models as 6-mass, 4-mass, 3-mass i, 3-mass ii, 2-mass and 1-mass models are considered for double-cage ig wind-turbine. by using the linear modal analysis method, the effects of the different multi mass model of double-cage ig wind-turbine on the ssr phenomenon are studied. the results obtained by eigenvalue analysis show that the model of double-cage ig wind- turbine has an important effect on the detecting of subsynchronous resonance (ssr) phenomenon. the analytical results are validated by detailed electromagnetic transient simulation using pscad/emtdc software.