为研究光伏组件可靠性,设计室内综合环境因素的加速试验方案,通过将室内加速老化试验结果与无锡及银川户外实证结果比对,验证室内加速老化试验的可行性。经过试验发现,加速老化试验约23 d的功率衰减与无锡户外1 a衰减情况较为接近;加速老化试验约60 d的功率衰减与银川户外2 a衰减率情况较为接近;功率的衰减均与短路电流变化呈完全正相关关系;通过衰减模型进行拟合分析,组件在户外试验和室内加速老化试验中的功率衰减趋势较为接近,且与衰减模型较为吻合,即室内加速老化试验可较好地模拟组件在户外实际工作情况。
Abstract
To investigate the reliability of photovoltaic modules, this paper designs an indoor accelerated aging test scheme with combined environmental factors, and compares the indoor accelerated aging test results with outdoor empirical results in Wuxi and Yinchuan to verify the feasibility of accelerated aging test. The findings indicate that the power degradation after about 23 days of accelerated aging test is similar to the power degradation after one year of outdoor empirical in Wuxi; the power degradation after about 60 days of accelerated aging test is similar to the power degradation after two years of outdoor empirical in Yinchuan. The degradation of power is positively correlated with the change of short-circuit current. Through the fitting analysis of degradation model, the degradation trend of components in outdoor test and indoor accelerated aging test is close to each other, which is consistent with the degradation model, indicating that the indoor accelerated aging test can simulate the actual working conditions of the modules in the outdoor environment to a good extent.
关键词
光伏组件 /
衰减 /
加速老化试验 /
户外实证 /
衰减模型 /
相关性分析
Key words
photovoltaic module /
degradation /
accelerated aging test /
outdoor empirical /
degradation model /
correlation analysis
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