大连地区风能资源评估及分布

Assessment and Distribution of Wind Energy Resources in Dalian

利用大连地区1971～2000年基本气象站和2006～2009年自动气象站风速观测资料,估算了风能的主要特征指标:风速、有效小时数、平均风功率密度、有效风功率密度。根据风能特征指标分析了大连地区风能资源状况和分布特征。结果表明:大连地区风能资源丰富,大部分地区年有效风功率密度在80W/m2以上,其中旅顺最大,为191.7W/m2,长海、大连、瓦房店都在150W/m2以上,金州为104.2W/m2,庄河、普兰店不足100W/m2。大连地区的风速有效时数大部分在4500h/a以上,其中大连、长海在6500h/a以上,旅顺、瓦房店、金州在4800～5500h/a之间。大连地区风能主要呈现沿海(海岛)大于内陆区域、南部地区大于北部地区、西海岸大于东海岸的空间分布。

Based on the 30-year wind data of basic observation stations from 1971 to 2000 and the wind data of automatic weather stations from 2006 to 2009 in Dalian,the wind speed,valid hours,mean wind power density,and effective wind power density are computed,and the spatial characteristics of wind power in Dalian are analyzed.The results show that the wind power resources are very abundant in Dalian,and the annual effective wind power density is greater than 80 W/m2 in most areas of Dalian,Lushun Station having the highest value of 191.7 W/m2;the values of Changhai,Dalian and Wafangdian are above 150 W/m2.The effective wind power density of Jinzhou is 104.2 W/m2,Zhuanghe and Pulandian less than 100 W/m2.Valid hours for most areas are above 4500 hours per year,above 6500 hours per year for Dalian and Changhai,and between 4800 and 5500 hours per year for Lushun,Wafangdian,and Changhai.The wind power resources in Dalian have the following spatial distribution features：more abundant in the coast and island areas than in the inland areas,in the south parts than in the north parts,and in the western coast than eastern coast.