| 天气与气候 |
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| Measurement and Evaluation of Wind Energy Resource in Huanggualiang, Qinghai, China |
| LI Ying-ye1,2, SHI Xing-he1,2, DAI Sheng1,2, WANG Qing-chun1,2 |
| 1.Qinghai Climate Centre, Xining 810001, China; 2.Qinghai Climate Change Monitoring and Evaluation Center, Xining 810001, China |
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Abstract Wind velocity and average wind power density were calculated based on wind tower data from June 2009 to May 2010 in Huanggualiang, Qinghai. Wind energy evaluation methods were used to analyze the variation and characteristics of various wind energy parameters and frequencies of wind directions. During the measurement period, the annual average wind velocity and wind power density in 10~100 m height is at 4.0~5.2 m·s-1 and 83.5~200.2 W·m-2 respectively, and the rise with height is noted too. Hours of wind velocity between 3~25 m·s-1 in all heights of the wind tower is between 4 560 and 5 316 hours, and the wind most frequently come from west, secondly from northeast. Wind energy is concentrated in W—NNW and NNE-NE sectors, and the accumulated frequencies can reach 60% and 29% respectively. The wind velocity anomaly percentage in 50 m height during the research period is relatively small (-5.15%), and annual average wind power density over decades is 192.3 W·m-2, reaching the Level 1（＜200 W·m-2）of grid-connected wind energy standards, indicating that this area is rich in wind energy.
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Received: 17 October 2010
Published: 20 May 2011
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2011, Vol. 31 
