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Accounting for Wind Gusts in Stability and Fault Ride- Through Studies for a Wind Power Plant

The paper discusses the effect of a wind gust with a realistic shape occurring simultaneously with a grid fault. For wind power plants with variable-speed pitch-regulated wind turbine generators, considered are fault scenarios for which no fault ride-through violation occurs in the absence of wind variation and a simultaneous gust assuming that the wind speed remains between the cut-in and cut-out values. Discussed are characteristics of wind gusts and evidence of their role, limitations of wind power plant models intended for actual stability studies and factors of influence. The effect is illustrated by PSS/E simulations for large power systems with wind power plants based on Type 2, 3 and 4 wind turbine generators. A framework for further investigations of the need to account for wind gusts in stability and fault ride-through studies is outlined.