A method for evaluating irradiation gain of a double-sided double-glass photovoltaic module based on regression analysis

Abstract

The invention discloses a method for evaluating irradiation gain of a double-sided double-glass photovoltaic module based on regression analysis. The method includes separately analyzing the installation conditions of the double-sided double-glass photovoltaic module (the lowest height of the module from the ground, the module inclination angle, the ground reflectivity and the local scattering coefficient) and the module irradiation gain data obtained from the experiment at the test site over a period of time unit, obtaining the linear and nonlinear regression models between the installation conditions and the irradiation gain, finally, predicting the irradiation gain of the double-sided double-glass photovoltaic module in the required time unit by inputting the values of the installationconditions into the regression model, and obtaining the optimal installation mode of the double-sided double-glass photovoltaic module system in the required place. The method realizes the predictionand evaluation of the irradiation gain of the double-sided double-glass photovoltaic module under a certain installation condition in a period of time by quantitatively installing the influence of theheight from the ground, the inclination angle, the ground reflectivity and the local scattering coefficient on the irradiation gain.

Description

technical field [0001] The invention relates to a method for evaluating the radiation gain of a double-sided double-glass photovoltaic module based on regression analysis, and belongs to the technical field of radiation analysis of photovoltaic systems. Background technique [0002] With the development of the photovoltaic industry becoming more and more perfect, the focus of research has expanded from simply improving the conversion efficiency of photovoltaic modules to improving the overall performance of photovoltaic systems. In recent years, double-sided double-glass photovoltaic modules have attracted widespread attention due to their outstanding durability, reliability, safety and high power generation characteristics. However, due to the difference in electrical performance between double-sided double-glass photovoltaic modules and conventional single-sided modules, the installation method of conventional single-sided modules cannot be fully applied to double-sided do...

AI Technical Summary

Problems solved by technology

However, due to the difference in electrical performance between double-sided double-glass photovoltaic modules and conventional single-sided modules, the installation method of conventional single-sided modules cannot be fully applied to double-sided double-glass photovoltaic modules. The surface radiation of photovoltaic modules is maximized, and the research in this area at home and abroad has not yet been fully developed at this stage. The existing installation conditions and radiation gain models of double-sided double-glass photovoltaic modules only include installation conditions that are off the ground. The three factors of height, inclination, and ground reflectivity do not take into account the influence of scattering, resulting in large deviations in the model, and most of them are qualitative analysis between installation conditions and radiation gain, which is inconvenient in practical applications

Images