Abstract:A wind power output model considering wake effects is proposed for power systems reliability evaluation.By analyzing the influence of partial occlusion and the wake effect on the complex wind turbines,a model of partial shield wake effect considering complex terrain is established.By using MATLAB,the input wind speed is calculated under different wind speeds,wind direction and fan arrangement,and the fast modeling of wind farm under the change of wind speed and direction is simulated.The model can more accurately describe the change when the wind speed and direction of wind farms output power.The correctness of the method is verified by simulation.The method is transplantable and can be used to calculate the input wind speed model of wind farms in various scales and is useful in adjusting the intermittency and randomness of the integrated output of offshore wind farms.