Study On Wind-blown Movement And Erosion Characteristics Of Kubuqi Desert Photovoltaic Power Station

Relying on the project of Yili Photovoltaic Power Station in Kubuqi Desert,this research chooses two sections of the upper wind direction edge and the abdomen of the photovoltaic panel array to study.Through the study of the airflow field,sediment flux and erosion and deposition characteristics of the two sections at different positions(under,front and between plates),we can grasp the unique wind and sand of the photovoltaic power station.The law of motion lays a theoretical foundation for sand hazard prevention and control of photovoltaic power plants in sandy areas.The main conclusions are as follows:(1)The fixed dip angle of photovoltaic panels in the sand area strongly affects the flow field pattern of wind-blown sand movement.In the photovoltaic panel,several flow field characteristic areas are formed from the windward measurement to the leeward side:the convergence acceleration zone,the choke deceleration zone,and the uplift acceleration zone.And dissipate the recovery area.At the upper edge of the wind,the vortex is generated under the plate and the front edge of the plate is 80cm.The flow field under the abdomen electric plate,the front edge of the plate and the plate is gradually degraded.The surface roughness of the corresponding position is increased by 17.0%compared with the upper wind plate.79.5%,69.2%.(2)Under the wind speed of 6.5m/s,the fitting of the sediment yield and height of the plate and the front of the plate is exponential function;the fitting function between plates is a power function,R2>0.89;with the wind speed increasing to 8.4 m/s,the fitting function of the plate and the front of the board is a power function;the fitting function between the plates is a polynomial function,R2>0.85.Photovoltaic plates exist to cause redistribution of surface sand particles.The average particle size between the plates and the plates is between 2.58and 3.32?,and the average grain size of the plate front is 1.91?.The sand particles between the plates,the front of the plates and the plates.The selection is excellent,the whole grain is coarse;the kurtosis between the plates and the plates is medium,and the front edge of the plate is narrow;the fractal dimension is from the big to the small,and the order is between the plates>under the board>the front of the board.(3)In the PV panel array,the net erosion intensity of the two layers under the plate and the plate is the whole.The net erosion intensity of the front edge of the plate is characterized by eclipse,and the etched state at the edge of the windward is distributed in the space.As the wind speed increases,the erosion range moves between the plates,and the erosion range of the abdominal plate moves toward the plate.The degree of erosion in the W-E direction of the pedestal of the front of the electric board increases first and then decreases.The degree of sand burial along the W-E direction increases with the pedestal of the slab along the W-E direction,and the erosion width of the wind erosion gully decreases along the W-E direction.