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In the Recent Years with Large Portion of the Power is Being Generated with Renewable Energy Sources. The only problem with the wind is that it can't be maintained constant as the wind speed changes with Time with the changing of the wind Pattern Multiple Frequencies Come into Picture which Stabilizes the System Environment. This Paper Analyze the Such Multi Frequency Oscillations as they Cause the Large-scale Wind Power Integration with the Wind Turbines I.E. Shafting Torsional Oscillation, Sub/Super-Synchronous Oscillation and High Frequency Resonance. The State of the Art Is Systematically Summarized from The Aspects of Oscillation Mechanism, Analysis Methods and Mitigation Measures, and the Future Research Directions Are Prospected.