Sensitivity of shading calculations to horizon uncertainty
Solar Energy(2017)
Abstract
•Solar calculations are more sensitive to errors in measured obstacle altitude than azimuth.•Overall worst case sensitivity to obstacle position is relatively low (around 2% per degree error or less).•Both beam and diffuse irradiance calculations are similarly sensitive to horizon errors.•Combined uncertainty of irradiance for practical shading measurements is around 3%.
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Key words
Shading,Horizon measurement,Irradiance uncertainty
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