A preliminary study of weather turbulence model on the performance of wind turbines
| Autor: | Wei-Ling Lin, 林韋伶 |
|---|---|
| Rok vydání: | 2018 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 106 Sustainable energy has always been an issue of concern to everyone. In Taiwan, wind energy is currently the most renewable energy source with potential for development. Since Taiwan Strait is one of the best wind farms in the world, there are also many countries that have developed wind power strongly want to invest in Taiwan in recent years. Although high wind speeds will result in high wind energy efficiency, the turbulence disturbances generated between the wind turbines will result in a reduction in power generation and cause wind turbine in damage, especially on the blades. There are mesoscale and microscale simulation data for discussion in this study. The mesoscale simulation by conducting the Weather Research and Forecast model (WRF model). The reconstruction of wind conditions in the Fuhai area was performed during September 2015 when the northeast monsoon occurred, and GFS-FNL was used as the initial data to forecast the output power of the wind turbines. The micro-scale simulation by conducting TurbSim which is a kind of statistical based on Kaimal model. In order to make relation between two different scale simulator, several important variables (wind speed, turbulent intensity at the hubheight, and wind shear ) from the mesoscale WRF simulation results are used as micro-scale TurbSim input parameters to simulate the wind turbulence that is similar to the actual weather conditions. The turbulent inflow field combine with wind turbine module by conducting FAST to simulate the effect of this inflow field on the wind turbine. In this report, the main study is on the blades of wind turbine, is a small scale observation, and make the data to spectrum distribution for understanding its meaning more clearly. In conclusion, it is hoped that this report will forecast wind power output in the Fuhai area and study the wind turbulence characteristics and focus on the impact of turbulence on root of blades. From the atmospheric scale to the engineering scale and combined to achieve consistent wind energy simulation. Furthermore, attempting to provide the basis for installation of wind turbines, and further discuss how to achieve the minimum wind turbine damage caused by turbulence. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
| Externí odkaz: |
|