EXPERIMENTAL STUDY ON PHOTOTHERMAL ENVIRONMENT OF CENTRALIZED OPEN-FIELD AGRICULTURAL PHOTOVOLTAIC ARRAY IN YANGTZE RIVER DELTA REGION IN SUMMER
Based on the hourly variation of solar illuminance and ambient temperature,a centralized open-ground photovoltaic square in the Yangtze River Delta region is taken as the research object.In a single-span array with a span of 6.8 m,three test sections at 0.65,3.40 and 6.15 m were taken along the span direction from south to north,namely,the southern area,the middle area and the northern area.Based on this,the test of the photothermal environment inside and outside the square in summer was carried out.In addition,the aim of this study is to analyze and clarify the variation rule of the photothermal environment in the area below the photovoltaic modules,which provides reference for efficiently utilization of solar energy resources,structural improvement and agricultural production management in summer.The results show that the photothermal environment in the three areas of the photovoltaic array presents regular differences in summer,and the overall performance is that the central area is better than the other two areas,and the northern area is slightly better than the southern area.Considering the demands of photothermal environment for crop growth,on the one hand,the internal light environment can be enhanced by improving the structure of photovoltaic modules and optimizing the planting methods;On the other hand,based on the law of thermal environment,the field management such as summer irrigation in the three internal areas should be done according to classification,therefore to promote the development and upgrading of agrivoltaics.
solar energyPV arrayenvironmental testingagricultural photovoltaictemperatureilluminance