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.
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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.
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This page is a summary of: Sub-synchronous oscillation in PMSGs based wind farms caused by amplification effect of GSC controller and PLL to harmonics , IET Renewable Power Generation, May 2018, the Institution of Engineering and Technology (the IET),
DOI: 10.1049/iet-rpg.2017.0740.
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