The accumulated dust of PV modules will block the sunlight, and make a reduction in the solar radiation energy received by the modules. Researchers at Chongqing University tested the efficiency of the modules before and after cleaning, and found that due to the shielding of dust, the conversion efficiency of modules after cleaning was 71.2% higher than before cleaning. In addition, if the ash deposition of the components is not treated, it will be unevenly distributed, which will lead to hot spots. The long-term existence of hot spots and high temperatures will cause serious safety risks such as EVA delamination and backplane burning through.
At present, solar power stations generally adopts the manual operation and maintenance method. It is low efficiency and high risk, the harsh outdoor operation and maintenance work environment makes cleaning work difficult. In addition, the operation and maintenance personnel stepped on the modules frequently, these stepping will make modules to rupture, affecting the life, and even severely causing power plant accidents.
For heavily polluted photovoltaic power plants, the most effective way to increase power generation is to clean the modules frequently. The intelligent cleaning operation and maintenance robot independently developed by Nanjing Tianchuang can realize automatic cleaning of the power station without manual intervention. Through regular cleaning, automatic moving and charging, high-frequency automatic cleaning keeps the modules basically dust-free. After years of development, this product has led the development of the intelligent operation and maintenance robot industry of photovoltaic power stations through continuous iterative upgrades. The cleaning robot can be applied to power stations in different application scenarios. At present, the product has been used in photovoltaic power plants of more than 1 GW.
Post time: Feb-26-2021