Simulation And Research Of Large-scale Photovoltaic Power Station

With the large-scale popularization and utilization of photovoltaic power generation as a typical new renewable energy in recent years,people are more and more aware of the close relationship between environmental protection and renewable energy utilization,so how to better and more effectively develop and utilize solar energy resources has become the key.Nowadays,there are many ways to use solar energy resources,such as photothermal,photovoltaic and so on.Among them,the photovoltaic power generation,which is directly converted from solar energy to electric energy,is not limited by the terrain.It can be either connected to the grid or independently generated with energy storage.There are more and more forms of multi energy complementary utilization,such as photovoltaic,wind energy and energy storage,which have become the mainstream.Based on pvsyst simulation software,this paper introduces the general situation of the 10 MW agricultural photovoltaic power station in Peixian County,Jiangsu Province.In the second chapter,the geographic location is established in the software to obtain meteorological data,solar energy and light resource analysis and project geological description.At present,there are two kinds of common installation methods: fixed type and tracking type.Combined with the actual situation of the project,this paper selects the flat single axis tracking type bracket for installation.In the third chapter,two different installation types of fixed and single shaft are compared and analyzed,including the determination of the design scope,the selection of main equipment,the design and layout of photovoltaic array,and the prediction of power generation.In order to evaluate the impact of various losses and shading on the power generation of the system in a more detailed and quantitative way,in the fourth chapter,pvsyst software is used to simulate the reflectivity setting of the power station system,the classification and percentage of detailed losses in detail,and the shading is completed by 3D modeling(obstacles around the ground plane station,near shadow simulation)of the project site In the whole process of analysis,a complete analysis report is finally formed,including 25 year power generation forecast,shadow loss ratio,I-V curve,P-V curve under different temperature and irradiance,volume ratio selection,etc.The fifth chapter completes the design of electrical system on the basis of the above,including electrical primary design,electrical secondary design,reactive power calculation,etc.Finally,the economic benefits of the photovoltaic power station are analyzed,and the impact of the simulation optimization results on the cost is compared.Combined with the comparison of the advantages and disadvantages of different array support installation methods,the future design of similar tracking photovoltaic power station also has reference significance.