The Study On Wind Characteristic Simulation System Based On Wind Power

Wind turbine is a kind of device which can convert the kinetic energy of wind into mechanical energy, so the impeller is the most important components of wind turbine and the loads of the other components are mainly caused by impeller loads. There are some factors effect atmospherical force such as wind speed, wind direction distribution, the conditions of topography, weather conditions .There is a need to master the wind characteristics of the distribution for its significance to wind turbine design and wind resource assessment. The statistical characteristics of wind in accordance with'The Method of Wind Resource Estimation'(GB/T 18710-2002), Calculate average wind speed, wind power density where is the height of hub of wind turbine .It also contains to draw wind speed curve and wind power changed curve at different times; wind direction rose diagram curve and wind power rose diagram at different times and so on; Influencing factors calculated, the main consideration factors contain: Surface roughness, Altitude, Undulating terrain etc.Based on the powerful Mathematical calculated function of MATLAB and GUI which can run independently, Preliminary designed a Simulation system about wind characteristic in atmosphere boundary layer and wind turbine aerodynamitic calculation .Provide the basis for wind resource estimation and analysis the force affect on the impeller .the system contains four parts: Statistical computing of wind, Influencing factors calculated, and base on these to calculated Indicators of wind power , Judge Wind resources concentration in some area. Make Simulate Results to contrast with WASP .The results show that the average wind speed is very close to WASP, but effective wind power density there is still a error . Wind turbine pneumatic calculated, calculating the Axial-inducible factor and tangential-inducible factor, and further calculate the impeller forces, and for the wind turbine blade design.