北京城区积灰对光伏发电量的影响

以北京建筑大学光伏并网发电系统为试验平台,A组为积灰对照组,B组为定时定比例清洁的试验组,利用相关性理论和SPSS统计分析软件,完成2015年3月10~29日期间内不同天气、不同积灰比例、不同太阳辐射量及组串发电量的试验数据统计和相关性分析。结果表明,积灰清洁比例与光伏发电量呈现正相关和非线性关系;在雾霾、多云、晴天天气条件下积灰对光伏发电量影响由大到小;在太阳中辐射量区间内最大。

Impact of Dust on Photovoltaic Power Generation in Beijing Urban Area

Taking the PV grid-connected power generation system of Beijing University of Civil Engineering and Architecture as the experimental platform, group A was the dust control group and the group B was a test group that was cleaned at specified time and specified ratio. Using the correlation theory and SPSS statistical analysis software, the test data statistics and correlation analysis of different weather, different dust ratio, different solar radiation and PV string power generation were completed during the period from March 10 to March 29, 2015. It was found that the dust ratio was positively correlated and nonlinear relationship with the PV power generation. In the haze, cloudy, sunny weather conditions, the impact of dust on the PV power generation was gradually reduced from large to small. The greatest effect was in the range of solar medium radiation.