POTENTIAL ASSESSSMENT AND SPATIO-TEMPORAL PATTERN OF SOLAR-WIND POWER IN QINGHAI PROVINCE

Cao Jiongwei; Wei Jiahua; Li Xiang; Huang Yuefei

doi:10.19912/j.0254-0096.tynxb.2022-1150

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Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (10) : 255-265. DOI: 10.19912/j.0254-0096.tynxb.2022-1150

POTENTIAL ASSESSSMENT AND SPATIO-TEMPORAL PATTERN OF SOLAR-WIND POWER IN QINGHAI PROVINCE

Cao Jiongwei¹, Wei Jiahua^1,2, Li Xiang^1,3, Huang Yuefei^1,2

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Abstract

In order to quantitatively assess the power potential of solar and wind resources in Qinghai Province, this paper extracts the exploitable area of solar and wind power stations based on geospatial analysis of topographic condition, land use and ecological protection area at a spatial resolution of 10 m×10 m; considers the impact of topographic condition on the reduction of installed capacity and the real-world parameters for designing a power station; and uses the MERRA-2 reanalysis data from 1980 to 2020 to assess the theoretical and technical potential of solar and wind power, analyze the spatio-temporal pattern, and identify the development and utilization. The results indicate that： 1）the multi-year average theoretical potential of solar power in Qinghai Province is 1881.1 kWh/m² and the technical potential is 301.7 kWh/m². In term of spatial distribution, the technical potential is high in the west and low in the east, with more significant changes in the east. In term of temporal evolution, the overall reduction rate is -33.79 billion kWh/a. The trend of evolution is different in different regions, with Guoluo and Yushu showing slowly increasing trends and other regions showing decreasing trends. 2）The multi-year average theoretical potential of wind power in Qinghai Province is 121.1 kWh/m² and the technical potential is 21.9 kWh/m². In term of spatial distribution, the technical potential is high in the northwest and low in the southeast, with more significant changes in the southwest. In term of temporal evolution, the overall reduction rate is -2.70 billion kWh/a. The trend of evolution is different in different regions, with the fastest downward trend in Haixi and the slow upward trend in Yushu. 3） The solar and wind power generation in Qinghai province is 16.7 billion and 8.1 billion kWh in 2020, accounting for 1.1% and 9.2% of the technical potential respectively, and there is still a large potential space.

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solar power / wind power / power generation potential / spatio-temporal distribution / exploitation and utilization

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Cao Jiongwei, Wei Jiahua, Li Xiang, Huang Yuefei. POTENTIAL ASSESSSMENT AND SPATIO-TEMPORAL PATTERN OF SOLAR-WIND POWER IN QINGHAI PROVINCE[J]. Acta Energiae Solaris Sinica. 2023, 44(10): 255-265 https://doi.org/10.19912/j.0254-0096.tynxb.2022-1150

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