As the capacity of wind farm increases, the power of wind farm is increasingly affected by the grid. Therefore, the importance of wind farm control system is increasing. The wind farm control system must be validated with sufficient testing before actual operation. In order to demonstrate the control system, there are many practical constraints such as cost and stability. Therefore, the control system can be verified through a simulator simulating real wind farm in real time. In order to effectively replicate wind farm, various types of wind turbines must be located in the wind farm. It should also be able to deliver the wind with wake effect to the wind turbine in real time. In this paper, we design and implement a real-time wind farm simulator using common data model of wind turbine, Ainslie's Eddy Viscosity wake model, and parallel processing technology.