光伏标准电池室外一级标定的不确定度分析

摘要

A direct normal irradiance calibration method and test bed is established for primary reference cell calibration in Lhasa. The calibration value and uncertainty analysis of direct normal irradiance, spectral mismatch correction, and short-circuit current measurement are discussed and evaluated for photovoltaic metrology calibration reference. The calibration method is based on absolute cavity radiometer which is calibrated against world radiation scale. The calibration result has good accuracy and reproducibility for photovoltaic metrology in China.%利用拉萨地区较好的阳光辐射条件,采用室外直接辐照度标定方法建立了标准光伏电池一级标定试验平台,提出了一级标定试验的实验条件及方法.对一级标定试验入射光辐照度、光谱失配修正、电池短路电流及温度等参数进行了不确定度分析及评定,标定结果具有较高的参考价值.室外一级标定采用绝对辐射计溯源至世界辐射基准,测量结果准确可靠,且具有较好的复现性.