The Whole Cycle Operations And Power Disturbance Characteristic Diagnosis Analysis Of Photovoltaic Power Generation Systems

The solar energy has several advantages,for example,non-polluting,and renewable as a most promising alternative energy.Solar energy photovoltaic power generation is developing rapidly in recent years and its technology has become increasingly mature.However,Photovoltaic power station is seriously restricted by its high costs,low efficiency and poor economics that it cannot get further popularization and application.There are two main reasons,one is that a photovoltaic system is easily affected by environmental factors,the study of improving emphasis of the photovoltaic power station focuses on judging the trend of photovoltaic system by meteorological factors and taking measures The other is that the operating life of photovoltaic power station will be shorten,then causes economic losses without carefully maintenance because the structure of photovoltaic power station system is complex.The main researches are as follows:(1)The main structure of the photovoltaic power station and its important parts has been introduced.Apart from a perfect operational plan,the operation condition of system has been evaluated.(2)Research of the output characteristics of photovoltaic power generation system has been carried out from the aspects of time power power generation,power generation,environmental data,power generation efficiency,then sums up characteristics of the power generation system from different seasons or weather conditions(3)Influence of solar irradiation intensity,environment temperature,wind speed,wind direction,air pressure and other meteorological factors on power has been analyzed based on the relationship between environmental factors and power,a regression model between meteorological factors and power has been established by contrasting change laws of influence of meteorological factors,which provides a theoretical basis for short-term power prediction of PV generation systems.