Design And Simulation Of Household Photovoltaic Power Generation System Based On PVsyst

At present,the development of industrialization makes fossil energy exhausted.It is the key of modern energy development to find alternative energy and maintain sustainable development.As a clean and renewable energy generation technology,solar photovoltaic power generation is a new type of renewable energy with stable performance,simple structure and environmental protection.Under the strong support of national policy,solar photovoltaic power generation has developed rapidly.Compared with centralized photovoltaic power generation,household photovoltaic(roof photovoltaic)power generation system has many advantages,such as flexibility,economy,small area,and so on.it has a broad development prospect at home and abroad.Therefore,the research on household photovoltaic power generation system has important theoretical and practical application value.The basic structure and working principle of photovoltaic cells are introduced in detail on the basis of analyzing the development status of photovoltaic industry at home and abroad,after the equivalent circuit of photovoltaic cell is given,the characteristics of photovoltaic cell are study from the aspects of output characteristics,illuminance characteristics,temperature characteristics,etc.,and the commonly used methods and prediction software of photovoltaic power generation are analyzed.By using meteorological data analysis software meteonorm,the key data such as sunrise,sunset time,sunshine duration,monthly average temperature and rainfall were obtained by studying the light resources,the geometric path of solar motion and other meteorological data in Shenyang area,and the meteorological feasibility of photovoltaic power generation system construction was evaluated,which laid the foundation for subsequent research.According to the analysis of the characteristics of household photovoltaic power generation system,the design principle and process of photovoltaic system are introduced.After considering the power consumption characteristics of ordinary users and analyzing the load characteristics and parameters of users,the PV system for household use is optimized by using pvsyst,a professional PV system design software,from the aspects of PV capacity,panel installation angle,bracket design,component selection,inverter selection,PV array combination method and so on.In addition,based on pvsyst software,the photovoltaic power generation,system loss,environmental benefits,return on investment accounting and other simulation studies were carried out to verify the feasibility of the household photovoltaic power generation system design.