影响太阳能光伏发电功率的环境气象因子诊断分析

利用华电宁夏陆家东光伏电站2010年6月1日至2011年5月31日的逐分钟光伏功率资料和同期银川国家气候现象台的气象观测资料,分析了气象要素对光伏电站功率的影响.结果表明,光伏电站逐日、逐时输出功率与日照时间、光照强度呈高度正相关,日照时间越长、光照强度越大组件输出功率越多；云量和相对湿度对光伏功率起削弱作用,且低云量的影响要大于总云量的影响,云状也有显著影响；温度对光伏电站功率的影响较为复杂,温度升高光伏功率减少,其机制需进一步深入研究.

Diagnostic Analysis of Meteorological Factors Affecting Solar Photovoltaic Generation Power

Based on one-minute interval photovoltaic generation power data of Lujiadong photovoltaic power plant in Ningxia province from July 1,2010 to May 31,2011 and the same period meteorological data in Yinchuan climate observatory, this paper analyzes the influence of meteorological factors on solar photovoltaic generation power. The results show that the daily and hourly solar photovoltaic generation power is highly positively correlated with the sunlight and the solar radiation; the longer the sunshine time is and the stronger the solar radiation intensity is, the more output power there is; the cloud amount and relative humidity play a role of weakening on the efficiency of photovoltaic power generation; the influence of lower cloud amount is larger than the total cloud amount; the cloud form has the significant influence; the influence of temperature on the efficiency is very complicated; the efficiency would decrease along with the increase of the temperature; the further research is needed.