Cleaning simulation method for photovoltaic module

Abstract

The invention provides a cleaning simulation method for a photovoltaic module, and the method is used for obtaining generating efficiency of the photovoltaic module. The simulation method comprises the steps as follows: measuring generating efficiency eta1 of the photovoltaic module; enabling the photovoltaic module to be detected to contact with brushing hairs of a rolling brush; rotating the rolling brush to clean the photovoltaic module, wherein the rotating speed of the rolling brush is the rotating speed when the rolling brush is in practical work; the rotating time of the rolling brush T equals to t plus n plus y, wherein t represents the one-time cleaning time while the photovoltaic module is cleaned, and n represents the times of cleaning the photovoltaic module every year, and y represents the using years of the photovoltaic module; measuring the generating efficiency eta2 of the photovoltaic module at this time after the rolling brush rotates for t hours. The cleaning simulation method for the photovoltaic module of the invention could simulate the generating efficiency of the photovoltaic module after using the photovoltaic module for some years by rotating the rolling brush for appointed time and judging the influence of rolling brush to the cleaning of the photovoltaic module.

Description

technical field [0001] The invention relates to a simulation test method, in particular to a photovoltaic module cleaning simulation method. Background technique [0002] For photovoltaic power plants in Northwest China, dust shadowing is an important factor affecting power generation. Northwest China is arid, water-short, and windy and sandy, and modules are seriously covered by dust. Dust shading reduces the amount of light radiation received by modules, affecting system efficiency and reducing power generation. Partial shading will cause hot spot effect, resulting in loss of power generation, affecting the life of components, and causing safety hazards at the same time. Dust shading will weaken the intensity of solar radiation received by the module, and at the same time cause unevenness of solar radiation, which will affect the output power of the module. [0003] According to the previous analysis, dust shading will seriously affect the output power of the components,...

AI Technical Summary

Problems solved by technology

The current cleaning method mainly uses a roller brush to clean, but it will scratch the surface of the photovoltaic module and affect the light transmittance

How to evaluate the damage of rolling brush cleaning to photovoltaic modules has always been a research topic in the industry, and there is a lack of a related testing equipment and method for rolling brush cleaning in the prior art

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