Study On Wind Load Characteristics And Resistant Performance Of Pillar Solar Panels

Due to the increasing shortage of energy,environmental pollution and ecological deterioration around the world,the search for clean renewable energy has become a key issue for all countries.Solar energy has attracted the attention of all countries because of its wide distribution,clean and harmless.The application of solar panels is also becoming more widespread.The functional characteristics of solar panels determine that it works outdoor,usually located in open spaces or high places,and there are no trees or building blocks around them,which also causes wind loads to be one of the main loads of solar panels.Therefore,the wind resistance research of solar panels has attracted attention from all aspects.In this thesis,the pillar solar panels erected along the Xicheng high-speed railway are taken as the research object.The five component coefficients of the structure were obtained by the full-scale model wind tunnel test.The finite element model was established by ANSYS and the modal analysis was carried out.Based on the wind tunnel test results,the static calculation of the structure and the analysis of wind resistance were carried out.The main work is as follows:Firstly,the wind tunnel test of the pillar double-block solar panels and the single-block solar panel structure was conducted in the XNJD-3 wind tunnel,the five component coefficients of the double-block solar panel system upper panel and brackets,the whole pillar double-block solar panel system and the single-block solar panel system are obtained.The wind load characteristics of the structure are analyzed based on five component coefficients.Secondly,the finite element model is established by ANSYS software,then the first 20 modes was extracted.The modal parameter such as the natural frequency,mode shape and partic factor of mode shape are given.Some brief analyses were done from characteristics of the wind load and mode shape.The maximum dynamic wind pressure on the surface of the solar panel caused by train wind is obtained by numerical analysis,the equivalent static wind load on the model under the combined action of natural wind and train wind is calculated.Finally,based on the results of wind tunnel test,the static analysis of the pillar solar panel structure is carried out by ANSYS software,and the deformation and stress under the combined action of natural wind and train wind are obtained.The results show that the stress and deformation are far less than the design tolerance in all kinds of landforms,and the wind resistance of the structure meets the design requirements.