Frequency Scan–Based Mitigation Approach of Subsynchronous Control Interaction in Type-3 Wind Turbines

Integration of wind energy resources into the grid creates several challenges for power system dynamics. More specifically, Type-3 turbines are susceptible to subsynchronous control interactions (SSCIs) when they become radially connected a series-compensated transmission line. SSCIs can cause disruptions in generation and result significant damage farm (WF) components equipment. This paper proposes an approach mitigate using online frequency scan, with optimized phase angles voltage harmonic injection maintain steady-state operation, modify controllers or operating conditions turbine. The proposed strategy is simulated PSCAD/EMTDC software on IEEE second benchmark model resonance. Simulation results demonstrate effectiveness this by ensuring oscillations do not grow.