大凌河朝阳县城区段风速特征分析

Analysis of Wind Speed Characteristics of Dalinghe River Section in Chaoyang County

摘要为了新能源开发利用，掌握区域性风能资源变化特征，采用朝阳气象站1953--2014年气候资料，运用气候分析诊断技术，研究大凌河朝阳县城区段近62年风速变化趋势。结果表明，年、季节平均风速明显减小。其中，年平均风速线性减小0．7m／s，春、夏、秋、冬4季分别减小1．2…020．6、0．8m／s。有效风速（3～25m／s）小时数每年减少约20h。风速减小对风能开发不利，但2006----2014年风速有所回升，接近历史平均水平。研究结果可为新能源开发、风电场设计提供参考。

In order to development and utilization of new energy sources, master regional wind energy resources change characteristics, this paper takes Chaoyang weather station 1953--2014 years climate data, the trend of the wind speed in the past 62 years of Dalinghe River section in Chaoyang County by us- ing climate analysis and diagnosis tech- nology was studied.The results show that the annum and seasonal average wind speed decreased significantly.Among them, the annum average wind speed de- creased linearly with 0.7 m/s, four sea- sons decreased 1.2 ,0.2,0.6,0.8 m/s,re- spectively. The number of hours of ef- fective wind speed （3 - 25 m/s） reduced about 20 hours per year. The decrease of wind speed is unfavorable to the devel- opment of wind energy, but the wind speed picked up from 2006 to 2014, close to the historical average. The re- search results can provide reference for the development of new energy and de- signing of wind farm.