普陀区风能分析

Analysis of Wind Energy in Putuo Region

利用沈家门30年风速资料及近几年建设的8个自动气象站风速资料,对普陀区的风能资源特征量进行计算分析。结果表明,普陀区属于风能资源丰富区,具有很高的开发价值。年平均风速3.9～6.7 m/s,风速分布自西向东逐渐增大。风速≥3 m/s的年有效风速时为5 568～7 708 h,风速≥6 m/s的年有效风速时为2 206～4 699 h。平均风能密度最大值达298.5W/m2,最小值为130.4 W/m2。风能随高度而明显增加,而50～70 m这层厚度上风能变化不大。并分析了4个最佳风能区风速和风向频率,可以极大提高风能的利用率。

Based on the 30 years wind velocity data at Shengjiameng and the wind velocity data of auto meteorological observational stations in recent years, caeulating analysis is made on the characters of wind energy in Putuo region. The main results show that, the Putuo is a district with great wind energy sources, so there is a high-value for developing wind energy. The year average wind velocity is between 3.9 and 6.7 m/s, and the wind velocity increase from west to east in this area. The hours of annual valid wind velocity is between 5 568 and 7 708 hours for wind velocity being great or equal 3 m/s, but between 2 206 and 4 699 hours for wind velocity being great or equal 6 m/s. The maximum （minimum） of mean wind energy density is 298.5 （130.4） W·m^-2. Generally, the wind energy increases with height, but it varies little on the level between 50 and 70 m. In this paper, the wind velocity and direction frequency of best wind energy area is analyzed, which can improves greatly the use of wind energy.