Abstract: How to construct detailed models,with accurate transient response characteristics,for wind turbines and cluster them reasonably are two main issues for dynamic equivalent modeling of wind farms.Based on a large amount of low voltage ride through field data and consultations with manufacturers,this paper presented the power control schemes of doubly-fed induction generator wind turbines during fault,possessing the power ramp recovery abilities.A good consistency between the simulation and field test results has validated the effectiveness of the proposed models.The transient response characteristics of a wind turbine working on various wind speeds were simulated under a three-phase short-circuit fault at the point of connection.Using typical distributions of wind speeds,the clustering indexes were studied.Thus,an active power response based practical equivalent method was proposed for wind farms,and case studies have been conducted to verify the proposed method with multiple groups of actual wind speed data.Simulation results showed that the proposed method has good adaptability to various wind speeds and fault locations.