关键词: 光伏, 截流阻沙, 风速廓线, 风沙流结构, 库布齐

Abstract: In order to explore wind and sand resistance effect of photovoltaic array in sand region, this paper took the 200 MWp photovoltaic power station in Kubuqi dessert as research object, setting observation point A at the upwind edge in the array, observation point B at downwind edge and CK at upwind flows the sand outside array, and the variation of wind speed and sediment transport were measured concurrently through HOBO small mobile weather station and stepped sand collector. The results showed that: ① The roughness of observation point A and B had been increased than the shifting sandy land, and the average wind speed of each observed altitude decreased. At 0.2 m height, the wind speed had the largest reduction value (27.76%, 29.83%), and the wind speed reduction value decreased with the increase of height, and the corresponding height wind speed reduction values were shown as observation point A < observation point B. ②The sand transport rate of observation point A and observation point B were 65.07% and 47.79% of the shifting sandy land ( 2.72 g·min-1·cm-1). Therefore, the existence of photovoltaic array had a significant interception effect on wind speed and sand transport, which weakened the near-surface sand activities. The research results could provide data support for the assessment of the impact of large-scale photovoltaic power stations on sand environment in desert areas.

Key words: photovoltaic array, intercepting and blocking sand, wind profiles, structure of sand driving wind, Kubuqi