Sub synchronous oscillation caused by wind power
What is it about?
Sub-synchronous oscillation (SSO) has been frequently observed at the PMSG-based wind farms in the Xinjiang China. We have clarified PMSG-based SSO can be caused by controller of grid side convert and phase phaser lockerand. We have used single machine infinite model to verify conclusion.
Why is it important?
Based on recent real engineering example of PMSG-based SSO incident. Our work show that the amplification effect of grid-side converter controller and PLL to harmonics can cause cause sustained power oscillation in sub-synchronous frequence. We have given a criterion for judging dangerous frequencies of SSO by small signal analysis method.
The following have contributed to this page: Yuping Cao
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