With increasing wind power penetration, impact of intermittent wind speed on power system operation should not be neglected. Intermittent wind speed is important for power system planning and operation. Intermittent wind speed model proposed in this paper is used to determine fast changing wind speed during intermittent wind speed periods. The proposed intermittency-related wind turbine output model is used to evaluate wind farm output during wind speed changing process. Firstly, intermittent wind speed mod...