Numerical Study Of Wind Power Assessment In Hongze Lake Based On WRF

(1) Confirmed the suitable parameterization scheme for the Hongze Lake with choosing and adjusting the parameters of WRF mode, thus for WRF mode in the area of use, provides the basis.(2) The state of wind energy resource of representative month (January,April,July,October) in Hongze Lake is numerical simulated by this WRF model. The simulation result and the actual data are compared; the results show the simulated results are reliable. Simulation value in some extent could show the characteristics of the wind resources in Hongze Lake, and the diurnal variation of simulation result and real wind data are consistent, it can reflect the changes of wind speed better. The simulation results of seasonal variation law of wind showed that, spring is the largest and the smallest is in summer; wind speed around the lake is faster than the wind speed on the land, and the gradient along the lakeshore changes significant. Vertical Wind speed change rules is wind speed increases with the increased height, when adding to a certain height, wind speed growth weakened. The wind field simulation results for January and October is northeast; and for April and July is southeast.(3) In this paper,numical simulation research is processed on land-lake breeze and the increase wind effects of the lake. The result shows that, during the conversion of the land-lake breeze, wind is weakest, during which the wind direction is changeful. The characters of land-lake breeze are significant on the west bank of Hongze Lake. The time for the land wind changes to the lake wind is 11 a.m., and the time for the lake wind changes to the land wind is 19 p.m..Through the comparison of cloudy sunny\typical example of land-lake breeze, it is concluded that the land-lake breeze is more significant on sunny weathers. The result of the research on the wind increase effect shows that the wind increase effect is the most significant in April. Besides, the popular wind direction is often blow from the east to the west, so the wind speed is faster on the west bank by the wind increase effect, it is concluded that the west bank is appropriate for the wind farm location.(4) Analyzed the wind resources of Hongze Lake, and the wind division of Hongze Lake is proceeded. The wind power density is similar to the law of wind speed in the simulation results:spring is the largest and the smallest is in summer. Wind power density around the lake is faster than the wind power density on the land, and the gradient along the lakeshore changes significant. According to relevant state standard and technical regulations, the wind resources of Hongze Lake area belongs to abundant and relatively abundant areas.