Share Email Print

Optical Engineering

Model for correcting global solar irradiance measured with rotating shadowband radiometer
Author(s): Hongyan Xing; Wei Chong; Yizhuo Sha; Wenhua Lv
Format Member Price Non-Member Price
PDF $20.00 $25.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Global horizontal irradiance (GHI) measured with rotating shadowband radiometer (RSR) is not accurate enough due to thermal sensitivity and nonuniform spectral response of the photovoltaic detector equipped inside. The purpose of this work is to develop a multiple regressive model to correct the errors posed by the temperature and spectrum. The ratio of the reference global horizontal irradiance (RGHI) to the RSR measured GHI is defined as correction factor, based on which, the model is built via device temperature, air mass, and solar zenith angle. Evaluated from various statistical tests such as coefficient of correlation R2, mean bias deviation, root mean square deviation, t-statistic, skewness, and kurtosis, results show that the corrected RSR GHI can be comparable with the high-quality RGHI, which indicates the validity of the model.

Paper Details

Date Published: 6 April 2012
PDF: 7 pages
Opt. Eng. 51(4) 046001 doi: 10.1117/1.OE.51.4.046001
Published in: Optical Engineering Volume 51, Issue 4
Show Author Affiliations
Hongyan Xing, Nanjing Univ. of Information Science & Technology (China)
Wei Chong, Nanjing Univ. of Information Science & Technology (China)
Yizhuo Sha, China Meteorological Administration (China)
Wenhua Lv, China Meteorological Administration (China)

© SPIE. Terms of Use
Back to Top