拉萨地区太阳能资源变化特征分析及评估  

Variation characteristics and assessment of solar energy resources in Lhasa area

作　　者：杨富程[1] 孙周[1] 韩二红 

机构地区：[1]四川电力设计咨询有限责任公司,四川成都610020

出　　处：《可再生能源》2014年第12期1791-1796,共6页Renewable Energy Resources

摘　　要：利用线性回归分析法、10年滑动平均法和Mann-Kendall检验法,分析了拉萨地区太阳总辐射量和日照时数变化特征。拉萨地区太阳总辐射量呈现显著的下降趋势,一年中太阳总辐射量的分布呈现单峰型,5月最高,12月最低;年日照时数呈现微弱的下降趋势,各月日照时数差异不大,全年日照时数呈双峰型,10月日照时数最大,8月日照时数最小。对拉萨地区太阳能资源的分析和评估结果表明:拉萨地区多年平均年太阳总辐射量为7 473.3 MJ/m2,属于太阳能资源最丰富区;太阳能资源稳定程度指标为1.89,稳定程度高,且直接辐射占主导,有利于进行太阳能资源的开发利用。Linear regression, ten-year moving average method and Mann-Kendall method were used to analyze the variation characteristics of global solar irradiance and sunshine duration in Lhasa area. Results showed that the global solar irradiance had a significant downward trend, and monthly global solar irradiances had a unimodal distribution with the highest value in May and lowest value in December; the sunshine duration had a slight downward trend, monthly sunshine durations had a bimodal distribution and the values had a little difference, the maximum sunshine duration was in October and the minimum one was in August. Analysis and evaluation results of Lhasa solar energy resources show that the average value of global solar irradiance is 7 473.3 MJ/m^2. The Lhasa belongs to the most abundant solar energy resources area, and the stability of solar energy resources was 1.89,which belongs to the high degree stability, so it＇s conducive to the development of solar energy resources.

关 键 词：太阳总辐射量 日照时数 拉萨地区 太阳能资源 

分 类 号：TK511[动力工程及工程热物理—热能工程]