Modeling And Evaluation Of Photovoltaic Resources In Beijing,Shanghai And Wuhan

With a series of supporting policies,the photovoltaic industry markets are increasingly prosperous,the development and utilization of solar energy resources is an inevitable requirement for China to accelerate economic transformation,response to climate change and achieve sustainable development.Photovoltaic system design and power generation forecasting urgent demand for the data of solar energy resource distribution and other related meteorological materials.However,the assessment and application of photovoltaic resource in China is still in the initial stages and both theory and practice need to be further studied.This paper is themed with modeling and evaluation of photovoltaic resources in Beijing,Shanghai and Wuhan.First of all,according to the China Meteorological Administration radiation observation data,according to the relevant evaluation criteria of photovoltaic resources,this paper makes a detailed evaluation of the multi region solar radiation resources in China,and analyzes the causes of the differences in different regions.For the beam-diffuse radiation separation model mechanism,considering the increase of air pollution,atmospheric aerosol and particulate matter in recent years,the PM2.5 be entered as input variables on the basis of clarity index and the sunshine hours,and establishment of a variety of beam-diffuse radiation separation model.According to the data of total cloud cover,precipitation and visibility,the weather types are classified as clear day,cloudy,overcast and rain day,carried out under different weather types for each model prediction error analysis.According to the results of factor analysis and spectral analysis,multiple beam-diffuse radiation separation models are proposed for multi-time scale,and combined with observational data to predict testing.Based on the measured data of solar radiation from the vertical wall of Beijing,Shanghai and Wuhan,the four kinds of models: Liu&Jordan isotropic model,Hay anisotropic model,Reindl anisotropic model and K+T model were used to predict the solar radiation value of vertical wall,and the results of the four models in three cities were compared and analyzed,and combing with the total cloud cover,PM2.5,weather types for error analysis.Introduces inclined surface radiation principle of tilting,single tracking and double tracking PV system,based on the measured radiation data in Beijing,the effects of different installation methods on solar radiation are analyzed in detail.For the optimal inclination of photovoltaic in Wuhan area,the isotropic and anisotropic radiation model is used for theoretical calculation,and then through the multi-tilt PV module observation test system in Hubei Provincial Meteorological Administration to verify,analysis and discuss the optimal inclination factors of the PV power plant under the actual working conditions,and the optimum inclination angle under the multi-time scale is given.Combined with the results of solar radiation assessment,given the best inclination of multiple regions in China based on four kinds of radiation models.Finally,summarize the contents of the study,the corresponding conclusions are summarized and prospects for the future research are also discussed.