Influence Of Different Azimuth Angle And Tile Angle On Generating Capacity And Benefit Of Photovoltaic Building Integrated System

Building integrate photovoltaic is the main form of distributed photovoltaic power generation system.It integrates photovoltaic system design organically into architectural design,so that it gives consideration to both power generation and architectural beauty.The main difference between the BIPV system and the traditional PV power station is that it cann't provide the most reasonable optimum tile angle and azimuth angle for the PV array due to the limitation of the whole building shape.Therefore,the forecast model of PV power plant is not suitable for BIPV system.Establishing the power generation forecasting system suitable for BIPV system has very important practical value and research significance in the design of BIPV system.In this paper,the domestic and international methods for predicting the power generation of photovoltaic power plants have been referenced.The simulation model suitable for the power generation of BIPV system has been established.It has been analyzed that the results of Experimental research and theoretical calculation of BIPV systems with different azimuths and tile angle.At first,the shortcomings of the current power generation forecast method of photovoltaic power station in the BIPV application have been studied.The current method was found to treat all radiation dosed on the module as vertical incidence,without taking into account the incidence of non-vertical incident light.In this paper,the hourly incident rate of light has been obtained by calculating the hourly incident angle of the light.Thus the accuracy of the calculated radiation has improved.Secondly,the main factors affecting the power generation of the BIPV system have been studied.The influence of irradiance,azimuth,tile angle,temperature,dust and installation method on the power generation of the system is systematically analyzed,then the corresponding impact factors were determined.Thus,the mathematics and Simulink simulation models for power generation have been established.Thirdly,eight groups of BIPV systems with adjustable azimuth and inclination were built.The BIPV systems with different azimuths and tile angle were respectively tested for a period of one month,and the hourly generating capacity and the daily generating capacity required for the experiment were collected.At the same time,the weather system collected the corresponding direct radiation,scattered radiation and ambient temperature.And the corresponding hourly direct radiation,hourly scattering radiation and hourly ambient temperature were collected by the meteorological system.Finally,using the PVsyst software,Polysun software and the established simulation model to simulate the BIPV system with different azimuth and tile angle,and the corresponding simulation data have been obtained.The simulation data and experimental data have been compared and analyzed,which verifies that the simulation data has high accuracy,and the error control is about 4%,which is lower than the results of other softwares(PVsyst software,Polysun software).At the same time,the benefits of the BIPV system with different azimuths and tile angle were calculated,and the economic and environmental benefits resulting from the entire life cycle of the system have been obtained.These results will provides theoretical support and design reference for the application of BIPV system...