Abstract
Transposition models are widely used in the solar energy industry to simulate solar radiation on inclined photovoltaic (PV) panels. These transposition models have been developed using various assumptions about the distribution of the diffuse radiation, and most of the parameterizations in these models have been developed using hourly ground data sets. Numerous studies have compared the performance of transposition models, but this paper aims to understand the quantitative uncertainty in the state-of-the-art transposition models and the sources leading to the uncertainty using high-resolution ground measurements in the plane of array. Our results suggest that the amount of aerosol optical depth can affect the accuracy of isotropic models. The choice of empirical coefficients and the use of decomposition models can both result in uncertainty in the output from the transposition models. It is expected that the results of this study will ultimately lead to improvements of the parameterizations as well as the development of improved physical models.
Original language | American English |
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Number of pages | 6 |
State | Published - 2016 |
Event | European PV Solar Conference and Exhibition (EU PVSEC) - Munich, Germany Duration: 20 Jun 2016 → 24 Jun 2016 |
Conference
Conference | European PV Solar Conference and Exhibition (EU PVSEC) |
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City | Munich, Germany |
Period | 20/06/16 → 24/06/16 |
NREL Publication Number
- NREL/CP-5D00-66634
Keywords
- solar radiation
- transposition model