Experimental Research On Water Photovoltaic Power Generation And Evaporation Prevention And Water Saving In Arid Area

Aiming at the problems of abundant solar energy,low rainfall,and ineffective evaporation loss from plain reservoirs in arid and semi-arid areas in my country,combined with water photovoltaic power generation technology and anti-evaporation and water-saving technology,a drought that integrates"productivity"and"water saving"has been established.Area water photovoltaic power generation unit body,through the study of the anti-evaporation water saving efficiency of water photovoltaic power station,the water saving efficiency under the combined action of solar panels and floating ball in wind and wave environment,and the actual layout and benefit theory of water photovoltaic power station in arid area After analysis,the main conclusions are as follows:（1）During the non-freezing period,the surface temperature of the water body covered by solar panels decreases by an average of 2.5℃compared with the unshielded group,and the water vapor pressure difference is 0.54k Pa.The inhibition rate of 1m² water surface evaporation first increases and then decreases with time in a whole year.The maximum value was 40.2%in July,and the minimum value was12.1%in January,and the annual water saving efficiency was 29.4%.（2）Using floats as anti-evaporation materials,combined with the shielding effect of solar panels on the water surface,during the non-freezing period,the evaporation inhibition rate of solar panels and floats combined with unshielded fences reached the maximum of 88.6%and 86.8 in July.%,and the minimum values in April were 85.0%and 80.6%,respectively.The ineffective evaporation during freezing period was mainly caused by the pores between the floating balls,and the inhibition rate was 91%.Under the combined action of the solar panel and the floating ball,the evaporation inhibition rate under the coverage of the floating ball is increased by 2.7%,and the evaporation inhibition rate under the cover of the solar panel is increased by 57.9%.（3）The power generation efficiency of water photovoltaic power stations in arid areas has been improved.The power generation of independent photovoltaic power stations,centralized grid-connected photovoltaic power stations,distributed grid-connected photovoltaic systems,and water photovoltaic power stations in arid areas has been analyzed theoretically.Compared with water photovoltaic power stations in arid areas The annual power generation of stand-alone photovoltaic power plants is 14.5%higher than that of distributed photovoltaic power plants,which is 2.3%higher than that of distributed photovoltaic power plants.Compared with general ground photovoltaic power plants,the power generation of floating photovoltaic power plants has increased to varying degrees,ranging from 2%to 14.5%.（4）The average annual water saving of the water photovoltaic power station in the arid area is 385,300m³,and the water salinity reduction rate is 37.7%.It is planned to save 5,589.68 tons of coal each year,reduce CO₂ by about 14533.17 tons,SO₂about 47.51 tons,and NOx about 41.36 tons.About 773.61 tons of fly ash.Therefore,the construction of water photovoltaic power plants in arid areas can alleviate the shortage of water resources in arid areas and control the increase in salt concentration of reservoir water.It can improve the environmental problems on the earth.At the same time,it is in line with my country’s photovoltaic industry development policy and promotes the continuous and rapid development of my country’s water surface photovoltaic power generation industry.An important measure for healthy development.