A Quantification Method for Spectral Distribution Differences in Different Climatic Regions

Abstract

The invention discloses a method for quantifying spectral distribution difference in different climate regions. The method comprises the following steps: performing one-dimensional linear interpolation processing on spectral distribution data on an upper bound of an ASTM E-490AM0 atmosphere to obtain spectral irradiance of any wavelength of the upper bound of the atmosphere layer, calculating thedirect spectral distribution data at somewhere and at certain time by combining air temperature, ground relative humidity, ozone optical quality, nitrogen dioxide optical quality, aerosol solubility and air concentration parameter meteorological data, measuring the ratio of the direct spectrum to the scattered spectrum at the moment by combining an irradiatometer, and performing analysis processing on the spectral distribution difference by the cloudage parameter of the place to acquire the direct spectrum correction coefficient of any wavelength taking the cloudage as index, so that the prediction uncertainty of the spectral distribution is reduced and the spectral distribution difference in different regions can be quantified under high precision.

Description

technical field [0001] The invention relates to a quantification method for spectral distribution differences in different climate regions, and belongs to the technical field of photovoltaic system design. Background technique [0002] In recent years, with the increasing awareness of environmental protection, the utilization of renewable energy such as wind energy, tidal energy, and solar energy has increased year by year, and the installation of solar photovoltaic power stations has increased dramatically year by year. In the design of photovoltaic power plants, the total annual radiation of the installation site, power plant power, etc. are often considered, and local climate factors are less considered. Changes in climatic factors have an impact on the power output of photovoltaic power plants and affect the stability of the power plant. Among all climatic factors, the cloud layer is in the troposphere of the atmosphere, and all weather phenomena such as: wind, rain, th...

AI Technical Summary

Problems solved by technology

In the study of the spectrum, only the effects of direct absorption and diffuse absorption of relatively stable components in the atmosphere during the day, such as ozone, nitrogen dioxide, aerosol, water vapor, etc., have not been studied on the spectral difference after sunlight passes through the clouds

It is impossible to accurately consider the specific influence of clouds on the design of photovoltaic power plants

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