Engineering Design And Research Of Distributed Photovoltaic Grid Connected Power Generation Project In An Automobile Enterprise

With the progress of society and the development of economy,people’s demand for energy is increasing.The depletion of fossil energy and the increasingly serious pollution make people’s pursuit of clean energy more and more intense.Solar energy resources are inexhaustible and widely distributed.It is an ideal alternative energy source.Due to the limitation of technology,it has not been able to make a breakthrough in the development.It is mainly limited by the low conversion efficiency,which makes the developed areas in urgent need of energy lack a lot of land for building photovoltaic power stations.However,due to the wide range of solar energy resources,low maintenance cost of photovoltaic power plants and the flexibility of construction sites,it is still the best choice for clean energy.This paper will start with the basic theory of photovoltaic system,optimize the layout of photovoltaic arrays,improve the utilization rate of land per unit area,optimize the system design and improve the efficiency of solar energy conversion,and introduce in detail the design and research of photovoltaic power station engineering technology in a finished car park in Zhenjiang.The research contents of this paper mainly include the following aspects:1.The engineering design and research of photovoltaic power plants are influenced by many factors.It is necessary to study these factors.It can even affect the construction decision of photovoltaic power plants.The technical data of photovoltaic power generation technology in this paper include:calculation of solar radiation and radiation,calculation of overall efficiency of photovoltaic power station,calculation of shadow,inclination and spacing of photovoltaic array,etc.Based on the results of previous studies,this paper puts forward its own calculation method,and as an example of this study,gives the basic data for the design and research of Zhenjiang photovoltaic project.2.By introducing the power generation principle of photovoltaic system,and then analyzing the control method of photovoltaic system,the methods and general principles for selecting the main equipment of photovoltaic system are obtained step by step.By comparing the technical parameters of photovoltaic module and inverter,the equipment suitable for example project is finally selected.In this paper,the calculation formula of MxN centralized photovoltaic array under complex illumination is deduced step by step from the basic principle of single photovoltaic module.Maximum power point tracking of inverters is the main technical parameter of photovoltaic system.In this paper,the maximum power point tracking is realized by conductivity increment method,and the model guideline is established to verify.3.Finally,taking the design and construction of photovoltaic project as an example,the climate and meteorological conditions of the project site are analyzed,and the technology and economy of photovoltaic array scheme are compared to determine the best scheme of photovoltaic array.In this paper,the MPPT tracking technology of inverters in this project is studied and simulated.The actual situation of the auxiliary power load,photovoltaic photovoltaic access scheme is analyzed and studied,and the final scheme is determined.Finally,the prospects of photovoltaic power plant design and research are prospected.It is hoped that this paper can provide a way of thinking for future power plant design.